301 CMR 41.00 — Toxic or hazardous substance list

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS 301 CMR 41.00:TOXIC OR HAZARDOUS SUBSTANCE LIST Section 41.01: Authority and Purpose 41.02: Definitions 41.03: Toxic or Hazardous Substance List 41.04: Amendment of the Toxic or Hazardous Substance List 41.05: Designation of Higher and Lower Hazard Substances 41.06: Higher Hazard Substances 41.07: Lower Hazard Substances

301 CMR 41.00 Toxic or hazardous substance list

41.01 Authority and Purpose

41.01: Authority and Purpose (1) Authority. The Administrative Council On Toxics Use Reduction adopts 301 CMR 41.00 pursuant to M.G.L. c. 21I, §§ 4(C) and 9. (2) Purpose. The Administrative Council on Toxics Use Reduction promulgates 301 CMR 41.00 to carry out its authority and responsibility: (a) to promote the coordination and enforcement of federal and state laws and regulations pertaining to toxics production and use, hazardous waste, industrial hygiene, worker safety, public exposure to toxics and the release of toxics into the environment; (b) to coordinate state programs in order to promote, most effectively, toxics use reduction in the Commonwealth; (c) to minimize unnecessary duplication of reporting requirements concerning toxic or hazardous substance production, use, release, disposal, and worker exposure; (d) to provide up-to-date and consistent information about manufacturing, worker exposure, distribution, process, sale, storage, release or other use of toxics on a facility, regional and statewide basis; (e) to adjust the toxic or hazardous substance list under M.G.L. c. 21I, § 9 by adding or deleting substances consistent with the changes on the Toxic Chemical List established pursuant to Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA); (f) to adjust the toxic or hazardous substance list under M.G.L. c. 21I, § 9 by retaining or deleting substances listed pursuant to sections 101(14) and 102 of the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) and to furthermore adjust the toxic or hazardous substance list by adding or deleting substances consistent with changes to the lists established pursuant to said sections of CERCLA; (g) to designate toxic or hazardous substances as higher hazard substances or lower hazard substances; and (h) to otherwise effectuate the purposes of M.G.L. c. 21I.

41.02 Definitions

41.02: Definitions Board means the Science Advisory Board of the Toxics Use Reduction Institute at the University of Massachusetts Lowell. Calendar Year Reporting Period means the calendar year beginning with the month of January and ending with the month of December. CAS Registry Number or CAS # means that number assigned to a chemical substance by the Chemical Abstract Service. CERCLA means the Comprehensive Environmental Response Compensation and Liability Act, 42 USC § 9601, et seq. (Public Law 92-500). Council means the Administrative Council on Toxics Use Reduction created under M.G.L. c. 21I, § 4. Department means the Department of Environmental Protection. EPCRA means the Emergency Planning and Community Right-to-Know Act, 42 U.S.C. § 11001 et seq. (Public Law 99-499). (Mass. Register #1568, 02/27/2026)

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41.02: continued Establishment means an economic unit, generally at a single physical location, where business is conducted or where services or industrial operations are performed. Facility means all buildings, equipment, structures, and other stationary items which are located on single site or on contiguous or adjacent sites and which are owned or operated by the same person, or by any person who controls, is controlled by, or is under common control with, such person. A facility may consist of more than one establishment if the establishments are operated by persons who have a common corporate or business interest (including, without limitation, common ownership or control) in the establishments. If the facility consists of more than one establishment where the establishments are operated by persons who do not have a common corporate or business interest (including, without limitation, common ownership or control) in the establishments, then each such person shall treat the establishments it operates as a facility. For purposes of 301 CMR 41.02: Facility, a "common corporate or business interest" includes ownership, partnership, joint ventures, ownership of a controlling interest in one person by the other, or ownership of a controlling interest in both persons by a third person. Higher Hazard Substance means a substance designated by the Council as a higher hazard substance pursuant to M.G.L. c. 21I, § 9, and 301 CMR 41.00. Import means to cause a toxic substance (including a mixture containing a toxic substance) to be imported into the customs territory of the United States. For purposes of 301 CMR

41.02 Import, "to cause" means to intend that the toxic substance be imported and to control

41.02: Import, "to cause" means to intend that the toxic substance be imported and to control the identity of the imported toxic substance and the amount to be imported. For purposes of

41.02 Import, "to cause" includes, without limitation:

301 CMR 41.02: Import, "to cause" includes, without limitation: (a) situations where a person orders a toxic substance from a foreign supplier; and (b) situations where the person uses an import brokerage firm as an agent to obtain the toxic substance. Lower Hazard Substance means a substance designated by the Council as a lower hazard substance pursuant to M.G.L. c. 21I, § 9, and 301 CMR 41.00. Manufacture means to produce, prepare, import or compound a toxic or hazardous substance. Manufacture shall also mean to produce a toxic or hazardous substance coincidentally during the manufacture, processing, use or disposal of another substance or mixture of substances, including a toxic substance that is separated from such other substance or mixture of substances as a byproduct, and a toxic substance that remains in such other substance or mixture of substances as an impurity. Person means any individual, trust, firm, joint stock company, corporation, partnership or association engaged in business or in providing service, excluding the Commonwealth of Massachusetts, and any authority, district, municipality or political subdivision of the Commonwealth of Massachusetts. Process means the preparation of a toxic or hazardous substance including, without limitation, a toxic substance contained in a mixture or trade name product, after its manufacture, for distribution in commerce: (a) in the same form or physical state, or in a different form or physical state from, that in which it was received by the toxics user so preparing such substance; or (b) as part of an article containing the toxic or hazardous substance. Substance means any agent or material including, but not limited to: pure chemicals with a specific chemical and structural identity; and categories or groups of chemicals, compounds or mixtures that share similar, identifiable characteristics such as, but not limited to, elemental composition, chemical formula, chemical structure, chemical properties, physical properties, functional groups or chemical manufacture. Toxic means toxic or hazardous.

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41.02: continued Toxic or Hazardous Substance means a substance in a gaseous, liquid, solid or other form which is identified on the toxic or hazardous substance list established pursuant to M.G.L. c. 21I, § 9, and 301 CMR 41.00, but which will not include any substance when it is: (a) present in an article; (b) used as a structural component of a facility; (c) present in a product used for routine janitorial or facility grounds maintenance; (d) present in foods, drugs, cosmetics or other personal items used by employees or other toxics users at a facility; (e) present in a product used for the purpose of maintaining motor vehicles operated by a facility; (f) present in process water or non-contact cooling water as drawn from the environment or from municipal sources, or present in the air used either as compressed air or part of combustion; (g) present in a pesticide or herbicide when used in agricultural applications; (h) present in crude, lube, or fuel oils or other petroleum materials being held for direct wholesale or retail sale; or (i) present in crude or fuel oils used in combustion to produce electricity, steam or heat except when production of electricity, steam or heat is the primary business of a facility. Toxic or Hazardous Substance List means the list of toxic or hazardous substances established pursuant to M.G.L. c. 21I, § 9 and 301 CMR 41.00. Toxics User means the following: (a) any person who owns or operates any facility that manufactures, processes or otherwise uses any toxic or hazardous substance and that is classified in the Standard Industrial Classification (SIC) Codes 10 through 14, 20 through 40, 44 through 51, 72, 73, 75 and/or 76, or the corresponding North American Industry Classification System (NAICS) codes. (b) If a person owns a facility, and that person's only interest in the facility is ownership of the real estate upon which the facility is operated, then, with respect to that facility, that person is not a toxics user. This includes, without limitation, owners of facilities such as industrial parks, all or part of which are leased to persons who operate establishments within SIC Codes 10 through 14, 20 through 40, 44 through 51, 72, 73, 75 and/or 76, or the corresponding NAICS codes, where the owner has no other business interest in the operation of the facility or establishment. Toxics Use Reduction Institute or Institute mean the Toxics Use Reduction Institute established pursuant to M.G.L. c. 21I, § 6.

41.03 Toxic or Hazardous Substance List

41.03: Toxic or Hazardous Substance List (1) For calendar year reporting period 2002 and thereafter, the toxic or hazardous substance list shall consist of the substances identified on the toxic chemical list pursuant to section 313 of EPCRA as of January 1, 2002 and the substances listed pursuant to sections 101(14) and 102 of CERCLA as of January 1, 2002, excluding the following substances: (a) copper, nickel, chromium, cobalt or manganese in a solid or molten metal alloy, but not including aerosols, where aerosol is defined as airborne particles less than 50 μm in diameter; (b) chromium III oxide; (c) hydroquinone, provided however that hydroquinone shall not be delisted for toxics users who manufacture hydroquinone; (d) acetic acid at concentrations less than or equal to 12%; (e) zinc oxide; (f) radionuclides; (g) silver-copper mixture when contained in an alloy form, but not including aerosols of the alloy where aerosol is defined as airborne particles less than 50 μm in diameter; (h) zero valance silver and copper, but not including aerosols of silver-copper alloy where aerosol is defined as airborne particles less than 50 μm in diameter; and (i) zinc stearate.

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41.03: continued (2) For calendar year reporting period 2002 and thereafter, the toxic or hazardous substance list shall include crystalline silica less than ten microns in size and used in the following processes: abrasive blasting and molding. (3) For calendar year reporting period 2008, the substances listed pursuant to sections 101(14) and 102 of CERCLA as of January 1, 2002, shall be retained on the toxic or hazardous substance list, excluding the substances specified in 301 CMR 41.03(1)(a) through (I). (4) For calendar year reporting period 2009, the substances listed pursuant to sections 101(14) and 102 of CERCLA as of January 1, 2008, shall be retained on the toxic or hazardous substance list, excluding the substances specified in 301 CMR 41.03(1)(a) through (i) and 301 CMR 41.03(6). (5) For calendar year reporting period 2010 and thereafter, the substances listed pursuant to §§ 101(14) and 102 of CERCLA as of January 1, 2008, shall be retained on the toxic or hazardous substance list, excluding: (a) the substances specified in 301 CMR 41.03(1)(a) through (i); (b) the substances specified in 301 CMR 41.03(6); and (c) the following substances: CAS #Chemical Name 124-04-9Adipic acid 1066-33-7Ammonium bicarbonate 12125-02-9Ammonium chloride 7773-06-0Ammonium sulfamate 628-63-7Amyl acetate 110-17-8Fumaric acid 110-16-7Maleic acid (6) The following substances shall no longer be individually retained on the toxic or hazardous substance list, except that any substance that belongs to a chemical category listed pursuant to § 313 of EPCRA shall remain subject to reporting as part of the § 313 EPCRA category: CAS #Chemical Name 7789-09-5Ammonium bichromate 7788-98-9Ammonium chromate 1762-95-4Ammonium thiocyanate 7803-55-6Ammonium vanadate 7647-18-9Antimony pentachloride 28300-74-5Antimony potassium tartrate 7789-61-9Antimony tribromide 10025-91-9Antimony trichloride 7783-56-4Antimony trifluoride 1309-64-4Antimony trioxide 11096-82-5Aroclor 1260 11097-69-1Aroclor 1254 11104-28-2Aroclor 1221 11141-16-5Aroclor 1232 12672-29-6Aroclor 1248 12674-11-2Aroclor 1016 53469-21-9Aroclor 1242 7778-39-4Arsenic acid 1327-52-2Arsenic acid 1303-32-8Arsenic disulfide 1303-28-2Arsenic pentoxide 1327-53-3Arsenic trioxide 1303-33-9Arsenic trisulfide 1327-53-3Arsenous oxide

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41.03: continued CAS #Chemical Name 7784-34-1Arsenous trichloride 542-62-1Barium cyanide 56-55-3Benz[a]anthracene 205-99-2Benzo[b]fluoranthene 207-08-9Benzo[k]fluoranthene 189-55-9Benzo[r,s,t]pentaphene 218-01-9Benzo[a]phenanthrene 50-32-8Benzo[a]pyrene 7787-47-5Beryllium chloride 7787-49-7Beryllium fluoride 7787-55-5Beryllium nitrate 13597-99-4Beryllium nitrate 543-90-8Cadmium acetate 7789-42-6Cadmium bromide 10108-64-2Cadmium chloride 7778-44-1Calcium arsenate 52740-16-6Calcium arsenite 13765-19-0Calcium chromate 592-01-8Calcium cyanide 144-34-3Carbamodithioic acid, dimethyl-,tetraanhydrosulfid with orthothioselenious acid (selenium, tetratis (dimethyldithiocarbamate)) 59-50-7p-Chloro-m-cresol 95-57-82-Chlorophenol 7005-72-34-Chlorophenyl phenyl ether 1066-30-4Chromic acetate 7738-94-5Chromic acid 11115-74-5Chromic acid 10101-53-8Chromic sulfate 10049-05-5Chromous chloride 218-01-9Chrysene 7789-43-7Cobaltous bromide 544-18-3Cobaltous formate 14017-41-5Cobaltous sulfamate 544-92-3Copper cyanide 137-29-1Copper, bis(dimethylcarbamodithioato-S-S)- (copper dimethyldithiocarbamate) 142-71-2Cupric acetate 12002-03-8Cupric acetoarsenite 7447-39-4Cupric chloride 3251-23-8Cupric nitrate 5893-66-3Cupric oxalate 7758-98-7Cupric sulfate 815-82-7Cupric tartrate 10380-29-7Cupric sulfate, ammoniated 57-12-5Cyanides (soluble salts and complexes) 460-19-5Cyanogen 506-68-3Cyanogen bromide 506-77-4Cyanogen chloride ((CN)Cl) 53-70-3Dibenz[a,h]anthracene 189-55-9Dibenz[a,i]pyrene 87-65-02,6-Dichlorophenol 696-28-6Dichlorophenylarsine 692-42-2Diethylarsine 57-97-67,12-Dimethylbenz[a]anthracene 460-19-5Ethanedinitrile 10421-48-4Ferric nitrate

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41.03: continued CAS #Chemical Name 206-44-0Fluoranthene 301-04-2Lead acetate 7784-40-9Lead arsenate 7645-25-2Lead arsenate 10102-48-4Lead arsenate 7758-95-4Lead chloride 13814-96-5Lead fluoborate 7783-46-2Lead fluoride 10101-63-0Lead iodide 10099-74-8Lead nitrate 7446-27-7Lead phosphate 7428-48-0Lead stearate 56189-09-4Lead stearate 52652-59-2Lead stearate 1072-35-1Lead stearate 1335-32-6Lead subacetate 7446-14-2Lead sulfate 15739-80-7Lead sulfate 1314-87-0Lead sulfide 592-87-0Lead thiocyanate 14307-35-8Lithium chromate 15339-36-3Manganese, bis(dimethylcarbamodithioato-S,S)- (manganesedimethyldithiocarbamate) 592-04-1Mercuric cyanide 10045-94-0Mercuric nitrate 7783-35-9Mercuric sulfate 592-85-8Mercuric thiocyanate 7782-86-7Mercurous nitrate 10415-75-5Mercurous nitrate 628-86-4Mercury fulminate 56-49-53-Methylcholanthrene 15699-18-0Nickel ammonium sulfate 13463-39-3Nickel carbonyl 7718-54-9Nickel chloride 37211-05-5Nickel chloride 557-19-7Nickel cyanide 12054-48-7Nickel hydroxide 14216-75-2Nickel nitrate 7786-81-4Nickel sulfate 54-11-5Nicotine 54-11-5Nicotine and salts 12002-03-8Paris green 696-28-6Phenyl dichloroarsine 62-38-4Phenylmercuric acetate 62-38-4Phenylmercury acetate 7784-41-0Potassium arsenate 10124-50-2Potassium arsenite 7778-50-9Potassium bichromate 7789-00-6Potassium chromate 151-50-8Potassium cyanide 7722-64-7Potassium permanganate 506-61-6Potassium silver cyanide 54-11-5Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)- 7783-00-8Selenious acid 12039-52-0Selenious acid, dithallium(1+) salt 7446-08-4 Selenium dioxide 7488-56-4Selenium sulfide 630-10-4Selenourea

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41.03: continued CAS #Chemical Name (continued) 506-64-9Silver cyanide 7761-88-8Silver nitrate 57-24-9Strychnine, and salts 7631-89-2Sodium arsenate 7784-46-5Sodium arsenite 10588-01-9Sodium bichromate 7775-11-3Sodium chromate 143-33-9Sodium cyanide (Na(CN)) 7782-82-3Sodium selenite 10102-18-8Sodium selenite 7789-06-2 Strontium chromate 1746-01-62,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) 58-90-22,3,4,6-Tetrachlorophenol 78-00-2Tetraethyl lead 1314-32-5Thallic oxide 7791-12-0Thallium chloride TlCl 10031-59-1Thallium sulfate 563-68-8Thallium(I) acetate 6533-73-9Thallium(I) carbonate 10102-45-1Thallium(I) nitrate 7446-18-6Thallium(I) sulfate 6533-73-9Thallous carbonate 7791-12-0Thallous chloride 7446-18-6Thallous sulfate 5344-82-1Thiourea, (2-chlorophenyl)- 25167-82-2Trichlorophenol 15950-66-02,3,4-Trichlorophenol 933-78-82,3,5-Trichlorophenol 933-75-52,3,6-Trichlorophenol 609-19-83,4,5-Trichlorophenol 36478-76-9Uranyl nitrate 10102-06-4Uranyl nitrate 1314-62-1Vanadium pentoxide 27774-13-6Vanadyl sulfate 81-81-2Warfarin (also Warfarin and salts) 557-34-6Zinc acetate 52628-25-8Zinc ammonium chloride 14639-97-5Zinc ammonium chloride 14639-98-6Zinc ammonium chloride 137-30-4Zinc, bis(dimetylcarbomodithioato-S,S)-, (ziram) 14324-55-1Zinc, bis(diethylcarbamodithioato-S,S)-(ethyl ziram) 1332-07-6Zinc borate 7699-45-8Zinc bromide 3486-35-9Zinc carbonate 7646-85-7Zinc chloride 557-21-1Zinc cyanide 7783-49-5Zinc fluoride 557-41-5Zinc formate 7779-86-4Zinc hydrosulfite 7779-88-6Zinc nitrate 127-82-2Zinc phenolsulfonate 1314-84-7Zinc phosphide 1314-84-7Zinc phosphide (conc. <= 10%) 1314-84-7Zinc phosphide (conc. > 10%) 16871-71-9Zinc silicofluoride 7733-02-0Zinc sulfate 13746-89-9Zirconium nitrate

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41.03: continued (7) For calendar year reporting period 2010 and thereafter, the toxic or hazardous substance list shall include the following substance: CAS #Chemical Name 106-94-5n-Propyl bromide (1-bromopropane) (8) For calendar year reporting period 2012 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to section 313 of EPCRA: CAS #Chemical Name 81-49-21-Amino-2,4-dibromoanthraquinone 3296-90-02,2-bis(Bromomethyl)-1,3 propanediol 110-00-9Furan 556-52-5Glycidol 78-79-5Isoprene 93-15-2Methyleugenol 91-23-6o-Nitroanisole 75-52-5Nitromethane 77-09-8Phenolphthalein 116-14-3Tetrafluoroethylene 509-14-8Tetranitromethane 75-02-5Vinyl Fluoride Polycyclic Aromatic Compounds (PACs) category: CAS # Chemical Name 42397-64-81,6-Dinitropyrene 42397-65-91,8-Dinitropyrene 7496-02-86-Nitrochrysene 57835-92-44-Nitropyrene (9) For calendar year reporting period 2017 and thereafter, the toxic or hazardous substance list shall include the following substance category, consistent with changes in the toxic chemical list established pursuant to section 313 of EPCRA: The nonylphenols category consists of these substances: CAS #Chemical Name 104-40-54-Nonylphenol 11066-49-2Isononylphenol 25154-52-3Nonylphenol 26543-97-54-Isononylphenol 84852-15-34-Nonylphenol, branched 90481-04-2Nonylphenol, branched (10) For calendar year reporting period 2018 and thereafter, the toxic or hazardous substance list shall include the following substance category, consistent with changes in the toxic chemical list established pursuant to section 313 of EPCRA: The hexabromocyclododecane (HBCD) category consists of these substances: CAS #Chemical Name 25637-99-4Hexabromocyclododecane 3194-55-61,2,5,6,9,10 hexabromocyclododecane

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41.03: continued (11) For calendar year reporting period 2019 and thereafter, the toxic or hazardous substance list shall include the following substance category: The C1-C4 halogenated hydrocarbons/halocarbons not otherwise listed (C1-C4 NOL) category consists of these substances: C1-C4 NOL includes any chemical substance that has four or fewer carbons, at least one halogen, and only hydrogen as the other constituent, that are not already individually listed. This includes fully halogenated chemicals that contain no hydrogen. (12) For calendar year reporting period 2020 and thereafter, the toxic or hazardous substance list shall include the following substance category, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: The nonylphenol ethoxylates (NPE) category consists of these substances: CAS #Chemical Name 7311-27-5Ethanol, 2-[2-[2-[2-(4-nonylphenoxy)ethoxy]ethoxy]ethoxy]- 9016-45-9 Poly(oxy-1,2-ethanediyl), α-(nonylphenyl)-ω-hydroxy- 20427-84-3Ethanol, 2-[2-(4-nonylphenoxy)ethoxy]- 26027-38-3Poly(oxy-1,2-ethanediyl), α-(4-nonylphenyl)-ω-hydroxy- 26571-11-93,6,9,12,15,18,21,24-Octaoxahexacosan-1-ol, 26-(nonylphenoxy)- 27176-93-8Ethanol, 2-[2-(nonylphenoxy)ethoxy]- 27177-05-53,6,9,12,15,18,21-Heptaoxatricosan-l-ol, 23-(nonylphenoxy)- 27177-08-83,6,9,12,15,18,21,24,27-Nonaoxanonacosan-1-ol, 29-(nonylphenoxy)- 27986-36-3Ethanol, 2-(nonylphenoxy)- 37205-87-1Poly(oxy-1,2-ethanediyl), α-(isononylphenyl)-ω-hydroxy- 51938-25-1Poly(oxy-1,2-ethanediyl), α-(2-isononylphenyl)-ω-hydroxy- 68412-54-4Poly(oxy-1,2-ethanediyl), α-(nonylphenyl)-ω-hydroxy-, branched 127087-87-0Poly(oxy-1,2-ethanediyl), α-(4-nonylphenyl)-ω-hydroxy-, branched (13) For calendar year reporting period 2021 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: CAS #Chemical Name 307-35-7Perfluorooctylsulfonyl fluoride 307-55-1Perfluorododecanoic acid 335-66-0Octanoyl fluoride, pentadecafluoro- 335-67-1Perfluorooctanoic acid 335-71-71-Heptanesulfonyl fluoride, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7- pentadecafluoro- 335-76-2Perfluorodecanoic acid 335-95-5Sodium perfluorooctanoate 355-46-4Perfluorohexanesulfonic acid 375-95-1Perfluorononanoic acid 376-06-7Perfluorotetradecanoic acid 376-14-72-[Ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl methacrylate 376-27-2Methyl perfluorooctanoate 383-07-32-[Butyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl acrylate 423-82-52-[Ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl acrylate 678-39-71-Decanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoro- 865-86-11-Dodecanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12- heneicosafluoro- 1652-63-73-[[(Heptadecafluorooctyl)sulfonyl]amino]-N,N,N-trimethyl-1- propanaminium iodide 1691-99-2N-Ethyl-N-(2-hydroxyethyl)perfluorooctanesulfonamide 1763-23-1Perfluorooctane sulfonic acid

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41.03 continued

41.03: continued CAS #Chemical Name 1996-88-92-Propenoic acid, 2-methyl-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl ester 2043-53-0Decane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-heptadecafluoro-10-iodo- 2043-54-1Dodecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-heneicosafluoro- 12-iodo- 2144-54-92-Propenoic acid, 2-methyl-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12- heneicosafluorododecyl ester 2263-09-41-Octanesulfonamide, N-butyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-N-(2-hydroxyethyl)- 2795-39-3Potassium perfluorooctanesulfonate 2991-51-7Glycine, N-ethyl-N-[(heptadecafluorooctyl)sulfonyl]-, potassium salt 3107-18-4Cyclohexanesulfonic acid, undecafluoro-, potassium salt 3825-26-1Ammonium perfluorooctanoate 3871-99-61-Hexanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluoro-, potassium salt 3872-25-11-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-, potassium salt 4151-50-2Sulfluramid 4980-53-42-Propenoic acid, 2-methyl-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16, 16-nonacosafluorohexadecyl ester 6014-75-12-Propenoic acid, 2-methyl-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14- pentacosafluorotetradecyl ester 13252-13-6Hexafluoropropylene oxide dimer acid 16517-11-6Octadecanoic acid, pentatriacontafluoro- 17202-41-41-Nonanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9- nonadecafluoro-, ammonium salt 17741-60-51,1,2,2-Tetrahydroperfluorododecyl acrylate 21652-58-4Perfluorooctyl Ethylene 24448-09-71-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-N-(2-hydroxyethyl)-N-methyl- 25268-77-32-[[(Heptadecafluorooctyl)sulfonyl]methylamino]ethyl acrylate 27619-90-51-Decanesulfonyl chloride, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluoro- 27619-91-61-Dodecanesulfonyl chloride, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-heneicosafluoro- 27905-45-91,1,2,2-Tetrahydroperfluorodecyl acrylate 29081-56-91-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-, ammonium salt 29117-08-6Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl]-ω-hydroxy- 29457-72-5Lithium (perfluorooctane)sulfonate 30046-31-2Tetradecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12- pentacosafluoro-14-iodo- 31506-32-81-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-N-methyl- 34362-49-71,1,2,2-Tetrahydroperfluorohexadecyl acrylate 34395-24-91,1,2,2-Tetrahydroperfluorotetradecyl acrylate 37338-48-0Poly[oxy(methyl-1,2-ethanediyl)], α-[2- [ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl]-ω-hydroxy- 38006-74-51-Propanaminium, 3-[[(heptadecafluorooctyl)sulfonyl]amino]-N,N,N- trimethyl-, chloride

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 39239-77-51-Tetradecanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14- pentacosafluoro- 52166-82-21-Propanaminium, N,N,N-trimethyl-3- [[(tridecafluorohexyl)sulfonyl]amino]-, chloride 55910-10-6Glycine, N-[(heptadecafluorooctyl)sulfonyl]-N-propyl-, potassium salt 56372-23-7Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(tridecafluorohexyl)sulfonyl]amino]ethyl]-ω-hydroxy- 56773-42-3Ethanaminium, N,N,N-triethyl-, salt with 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1-octanesulfonic acid (1:1) 59071-10-22-Propenoic acid, 2- [ethyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl ester 60270-55-51-Heptanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro-, potassium salt 60699-51-61-Hexadecanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16, 16-nonacosafluoro- 61660-12-61-Octanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-N-[3-(trimethoxysilyl)propyl]- 61798-68-3Pyridinium, 1-(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl)-, salt with 4-methylbenzenesulfonic acid (1:1) 62037-80-3Hexafluoropropylene oxide dimer acid ammonium salt 65104-65-61-Eicosanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16, 17,17,18,18,19,19,20,20,20-heptatriacontafluoro- 65104-67-81-Octadecanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16, 17,17,18,18,18-tritriacontafluoro- 65510-55-6Hexadecane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14- nonacosafluoro-16-iodo- 65530-59-8Poly(difluoromethylene), α-fluoro-ω-(2-hydroxyethyl)-, 2-hydroxy- 1,2,3-propanetricarboxylate (3:1) 65530-61-2Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]- 65530-62-3Poly(difluoromethylene), α,α'-[phosphinicobis(oxy-2,1- ethanediyl)]bis[ω-fluoro- 65530-63-4Ethanol, 2,2'-iminobis-, compd. with α-fluoro-ω-[2- (phosphonooxy)ethyl]poly(difluoromethylene) (2:1) 65530-64-5Ethanol, 2,2'-iminobis-, compd. with α,α'-[phosphinicobis(oxy-2,1- ethanediyl)]bis[ω-fluoropoly(difluoromethylene)] (1:1) 65530-65-6Poly(difluoromethylene), α-fluoro-ω-[2-[(1-oxooctadecyl)oxy]ethyl]- 65530-66-7Poly(difluoromethylene), α-fluoro-ω-[2-[(2-methyl-1-oxo-2- propenyl)oxy]ethyl]- 65530-69-0Poly(difluoromethylene), α-[2-[(2-carboxyethyl)thio]ethyl]-ω-fluoro-, lithium salt 65530-70-3Poly(difluoromethylene), α,α'-[phosphinicobis(oxy-2,1- ethanediyl)]bis[ω-fluoro-, ammonium salt 65530-71-4Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]-, monoammonium salt 65530-72-5Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]-, diammonium salt 65530-74-7Ethanol, 2,2'-iminobis-, compd. with α-fluoro-ω-[2- (phosphonooxy)ethyl]poly(difluoromethylene) (1:1) 65530-83-8Poly(difluoromethylene), α-[2-[(2-carboxyethyl)thio]ethyl]-ω-fluoro-

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 65545-80-4Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, ether with α-fluoro-ω- (2-hydroxyethyl)poly(difluoromethylene) (1:1) 65605-56-3Poly(difluoromethylene), α-fluoro-ω-(2-hydroxyethyl)-, dihydrogen 2- hydroxy-1,2,3-propanetricarboxylate 65605-57-4Poly(difluoromethylene), α-fluoro-ω-(2-hydroxyethyl)-, hydrogen 2- hydroxy-1,2,3-propanetricarboxylate 65605-58-52-Propenoic acid, esters, 2-methyl-, dodecyl ester, polymer with α- fluoro-ω-[2-[(2-methyl-1-oxo-2-propen-1- yl)oxy]ethyl]poly(difluoromethylene) 65605-59-62-Propenoic acid, 2-methyl-, dodecyl ester, polymer with α-fluoro-ω- [2-[(2-methyl-1-oxo-2-propen-1-yl)oxy]ethyl]poly(difluoromethylene) and N-(hydroxymethyl)-2-propenamide 65605-73-4Poly(difluoromethylene), α-fluoro-ω-[2-[(1-oxo-2- propenyl)oxy]ethyl]-, homopolymer 65636-35-3Ethanaminium, N,N-diethyl-N-methyl-2-[(2-methyl-1-oxo-2- propenyl)oxy]-, methyl sulfate, polymer with 2-ethylhexyl 2-methyl-2- propenoate, α-fluoro-ω-[2-[(2-methyl-1-oxo-2- propenyl)oxy]ethyl]poly(difluoromethylene), 2-hydroxyethyl 2- methyl-2-propenoate and N-(hydroxymethyl)-2-propenamide 67584-42-3Cyclohexanesulfonic acid, decafluoro(pentafluoroethyl)-, potassium salt 67584-52-5Glycine, N-ethyl-N-[(undecafluoropentyl)sulfonyl]-, potassium salt 67584-53-6Glycine, N-ethyl-N-[(tridecafluorohexyl)sulfonyl]-, potassium salt 67584-56-92-Propenoic acid, 2- [methyl[(undecafluoropentyl)sulfonyl]amino]ethyl ester 67584-57-02-Propenoic acid, 2-[methyl[(tridecafluorohexyl)sulfonyl]amino]ethyl ester 67584-58-11-Propanaminium, N,N,N-trimethyl-3- [[(pentadecafluoroheptyl)sulfonyl]amino]-, iodide 67584-62-7Glycine, N-ethyl-N-[(pentadecafluoroheptyl)sulfonyl]-, potassium salt 67905-19-5Perfluoropalmitic acid 67906-42-71-Decanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heneicosafluoro-, ammonium salt 67969-69-11-Octanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-N-[2-(phosphonooxy)ethyl]-, diammonium salt 68084-62-82-Propenoic acid, 2- [methyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl ester 68140-18-1Thiols, C4-10, γ-ω-perfluoro 68140-20-5Thiols, C6-12, γ-ω-perfluoro 68140-21-6Thiols, C10-20, γ-ω-perfluoro 68141-02-6Chromium(III) perfluorooctanoate 68156-01-4Cyclohexanesulfonic acid, nonafluorobis(trifluoromethyl)-, potassium salt 68156-07-0Cyclohexanesulfonic acid, decafluoro(trifluoromethyl)-, potassium salt 68187-25-7Butanoic acid, 4-[[3-(dimethylamino)propyl]amino]-4-oxo-, 2(or 3)- [(γ-ω-perfluoro-C6-20-alkyl)thio] derivs. 68187-47-31-Propanesulfonic acid, 2-methyl-, 2-[[1-oxo-3-[(γ-ω-perfluoro-C4- 16-alkyl)thio]propyl]amino] derivs., sodium salts

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 68188-12-5Alkyl iodides, C4-20, γ-ω-perfluoro 68227-96-32-Propenoic acid, butyl ester, telomer with 2- [[(heptadecafluorooctyl)sulfonyl]methylamino]ethyl 2-propenoate, 2- [methyl[(nonafluorobutyl)sulfonyl]amino]ethyl 2-propenoate, α-(2- methyl-1-oxo-2-propenyl)-ω-hydroxypoly(oxy-1,4- butanediyl), α-(2- methyl-1-oxo-2-propenyl)-ω-[(2-methyl-1-oxo-2- propenyl)oxy]poly(oxy-1,4-butanediyl), 2- [methyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl 2-propenoate, 2- [methyl[(tridecafluorohexyl)sulfonyl]amino]ethyl 2- propenoate, 2- [methyl[(undecafluoropentyl)sulfonyl]amino]ethyl 2-propenoate and 1-octanethiol 68239-43-02-Propenoic acid, 2-methyl-, 2-ethylhexyl ester, polymer with α- fluoro-ω-[2-[(2-methyl-1-oxo-2-propen-1- yl)oxy]ethyl]poly(difluoromethylene), 2-hydroxyethyl 2-methyl-2- propenoate and N-(hydroxymethyl)-2-propenamide 68259-07-41-Heptanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro-, ammonium salt 68259-08-51-Hexanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluoro-, ammonium salt 68259-09-61-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-, ammonium salt 68259-38-1Poly[oxy(methyl-1,2-ethanediyl)], α-[2- [ethyl[(tridecafluorohexyl)sulfonyl]amino]ethyl]-ω-hydroxy- 68259-39-2Poly[oxy(methyl-1,2-ethanediyl)], α-[2- [ethyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl]-ω-hydroxy- 68298-62-42-Propenoic acid, 2- [butyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl ester, telomer with 2-[butyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl 2-propenoate, methyloxirane polymer with oxirane di-2-propenoate, methyloxirane polymer with oxirane mono-2-propenoate and 1-octanethiol 68298-80-6Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(undecafluoropentyl)sulfonyl]amino]ethyl]-ω-hydroxy- 68298-81-7Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl]-ω-hydroxy- 68310-17-8Poly[oxy(methyl-1,2-ethanediyl)], α-[2- [ethyl[(undecafluoropentyl)sulfonyl]amino]ethyl]-ω-hydroxy- 68391-08-2Alcohols, C8-14, γ-ω-perfluoro 68412-68-0Phosphonic acid, perfluoro-C6-12-alkyl derivs. 68412-69-1Phosphinic acid, bis(perfluoro-C6-12-alkyl) derivs. 68515-62-81,4-Benzenedicarboxylic acid, dimethyl ester, reaction products with bis(2-hydroxyethyl)terephthalate, ethylene glycol, α-fluoro-ω-(2- hydroxyethyl)poly(difluoromethylene), hexakis(methoxymethyl)melamine and polyethylene glycol 68555-74-81-Pentanesulfonamide, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-N-(2- hydroxyethyl)-N-methyl- 68555-75-91-Hexanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluoro-N-(2- hydroxyethyl)-N-methyl- 68555-76-01-Heptanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro- N-(2-hydroxyethyl)-N-methyl- 68555-81-71-Propanaminium, N,N,N-trimethyl-3- [[(pentadecafluoroheptyl)sulfonyl]amino]-, chloride 68555-91-92-Propenoic acid, 2-methyl-, 2- [ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl ester, polymer with 2- [ethyl[(nonafluorobutyl)sulfonyl]amino]ethyl 2-methyl-2- propenoate, 2-[ethyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl 2- methyl-2-propenoate, 2- [ethyl[(tridecafluorohexyl)sulfonyl]amino]ethyl 2-methyl-2- propenoate, 2-[ethyl[(undecafluoropentyl)sulfonyl]amino]ethyl 2- methyl-2-propenoate and octadecyl 2-methyl-2-propenoate

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 68758-57-61-Tetradecanesulfonyl chloride, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14- pentacosafluoro- 68867-60-72-Propenoic acid, 2- [[(heptadecafluorooctyl)sulfonyl]methylamino]ethyl ester, polymer with 2- [methyl[(nonafluorobutyl)sulfonyl]amino]ethyl 2-propenoate, 2-[methyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl 2- propenoate, 2-[methyl[(tridecafluorohexyl)sulfonyl]amino]ethyl 2-propenoate, 2- [methyl[(undecafluoropentyl)sulfonyl]amino]ethyl 2-propenoate and α-(1-oxo-2-propenyl)-ω-methoxypoly(oxy-1,2-ethanediyl) 68957-55-11-Propanaminium, N,N,N-trimethyl-3- [[(undecafluoropentyl)sulfonyl]amino]-, chloride 68957-57-31-Propanaminium, N,N,N-trimethyl-3- [[(undecafluoropentyl)sulfonyl]amino]-, iodide 68957-58-41-Propanaminium, N,N,N-trimethyl-3- [[(tridecafluorohexyl)sulfonyl]amino]-, iodide 68957-62-01-Heptanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,7- pentadecafluoro- 68958-60-1Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(pentadecafluoroheptyl)sulfonyl]amino]ethyl]-ω-methoxy- 68958-61-2Poly(oxy-1,2-ethanediyl), α-[2- [ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethyl]-ω-methoxy- 70225-14-81-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1) 70225-15-91-Heptanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1) 70225-16-01-Hexanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1) 70225-17-11-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1) 70969-47-0Thiols, C8-20, γ-ω-perfluoro, telomers with acrylamide 70983-59-4Poly(oxy-1,2-ethanediyl), α-methyl-ω-hydroxy-, 2-hydroxy-3-[(γ-ω- perfluoro-C6-20-alkyl)thio]propyl ethers 70983-60-71-Propanaminium, 2-hydroxy-N,N,N-trimethyl-, 3-[(γ-ω-perfluoro- C6-20-alkyl)thio] derivs., chlorides 71608-60-1Pentanoic acid, 4,4-bis[(γ-ω-perfluoro-C8-20-alkyl)thio] derivs. 72623-77-9Fatty acids, C6-18, perfluoro, ammonium salts 72968-38-8Fatty acids, C7-13, perfluoro, ammonium salts 74499-44-8Phosphoric acid, γ-ω-perfluoro-C8-16-alkyl esters, compds. with diethanolamine 78560-44-8Silane, trichloro(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl)- 80010-37-3Poly(difluoromethylene), α-fluoro-ω-[2-sulphoethyl)- 83048-65-1Silane, (3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl)trimethoxy- 95144-12-0Poly(difluoromethylene), α-fluoro-ω-[2-(phosphonooxy)ethyl]-, ammonium salt 97553-95-2Thiocyanic acid, γ-ω-perfluoro-C4-20-alkyl esters 97659-47-7Alkenes, C8-14 α-, δ-ω-perfluoro 118400-71-8Disulfides, bis(γ-ω-perfluoro-C6-20-alkyl) 123171-68-6Poly(difluoromethylene), α-[2-(acetyloxy)-3- [(carboxymethyl)dimethylammonio]propyl]-ω-fluoro-, inner salt 125476-71-3Silicic acid (H4SiO4), disodium salt, reaction products with chlorotrimethylsilane and 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluoro-1-decanol 135228-60-3Hexane, 1,6-diisocyanato-, homopolymer, γ-ω-perfluoro-C6-20-alc.- blocked

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 142636-88-22-Propenoic acid, 2-methyl-, octadecyl ester, polymer with 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-heneicosafluorododecyl 2- propenoate, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl 2- propenoate and 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14- pentacosafluorotetradecyl 2-propenoate 143372-54-7Siloxanes and Silicones, (3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl)oxy Me, hydroxy Me, Me octyl, ethers with polyethylene glycol mono-Me ether 148240-85-11,3-Propanediol, 2,2-bis[[(γ-ω-perfluoro-C4-10-alkyl)thio]methyl] derivs., phosphates, ammonium salts 148240-87-31,3-Propanediol, 2,2-bis[[(γ-ω-perfluoro-C6-12-alkyl)thio]methyl] derivs., phosphates, ammonium salts 148240-89-51,3-Propanediol, 2,2-bis[[(γ-ω-perfluoro-C10-20-alkyl)thio]methyl] derivs., phosphates, ammonium salts 150135-57-22-Propenoic acid, 2-methyl-, 2-(dimethylamino)ethyl ester, polymers with Bu acrylate, γ-ω-perfluoro-C8-14-alkyl acrylate and polyethylene glycol monomethacrylate, 2,2'-azobis[2,4-dimethylpentanenitrile]-initiated 178094-69-41-Octanesulfonamide, N-[3-(dimethyloxidoamino)propyl]- 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt 178535-23-4Fatty acids, linseed-oil, γ-ω-perfluoro-C8-14-alkyl esters 180582-79-0Sulfonic acids, C6-12-alkane, γ-ω-perfluoro, ammonium salts 182176-52-9Ethaneperoxoic acid, reaction products with 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl thiocyanate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl thiocyanate 196316-34-42-Propenoic acid, 2-methyl-, 2-(dimethylamino)ethyl ester, polymers with γ-ω-perfluoro-C10-16-alkyl acrylate and vinyl acetate, acetates 200513-42-42-Propenoic acid, 2-methyl-, polymer with butyl 2-methyl-2- propenoate, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- heptadecafluorodecyl 2-propenoate, 2-hydroxyethyl 2-methyl-2-propenoate and methyl 2- methyl-2-propenoate 238420-68-3Propanedioic acid, mono(γ-ω-perfluoro-C8-12-alkyl) derivs., di-me esters 238420-80-9Propanedioic acid, mono(γ-ω-perfluoro-C8-12-alkyl) derivs., bis[4- (ethenyloxy)butyl] esters 1078142-10-51,3-Propanediol, 2,2-bis[[(γ-ω-perfluoro-C6-12-alkyl)thio]methyl] derivs., polymers with 2,2-bis[[(γ-ω-perfluoro-C10-20- alkyl)thio]methyl]-1,3-propanediol, 1,6-diisocyanato-2,2,4(or 2,4,4)- trimethylhexane, 2-heptyl-3,4-bis(9-isocyanatononyl)-1- pentylcyclohexane and 2,2'-(methylimino)bis[ethanol] 1078712-88-5Thiols, C4-20, γ-ω-perfluoro, telomers with acrylamide and acrylic acid, sodium salts 1078715-61-31-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-, N-[2- [(γ-ω-perfluoro-C4-20-alkyl)thio]acetyl] derivs., inner salts (14) For calendar year reporting period 2022 and thereafter, the toxic or hazardous substance list shall include the following substance category: The certain per- and polyfluoroalkyl substances not otherwise listed (Certain PFAS NOL) category consists of these substances: Certain PFAS NOL includes those PFAS that contain a perfluoroalkyl moiety with three or more carbons (e.g., –C n F 2n –, n ≥ 3; or CF 3 –C n F 2n – , n ≥2) or a perfluoroalkylether moiety with two or more carbons (e.g., –C n F 2n OC m F 2m

• or –C n F 2n OC m F m –, n and m ≥1), wherein for the example structures shown, the dash (–) is not a bond to a hydrogen and may represent a straight or branched structure, that are not otherwise listed. (15) For calendar year reporting period 2023 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313:

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued CAS #Chemical Name 2395-00-8Potassium perfluorooctanoate 335-93-3Silver(I) perfluorooctanoate 507-63-1Perfluorooctyl iodide 65104-45-22-Propenoic acid, 2-methyl-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-heneicosafluorododec yl ester, polymer with 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl 2-methyl-2-propenoate, methyl 2-methyl-2-propenoate, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14-pentacos afluorotetradecyl 2-methyl-2-propenoate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl 2-methyl-2-propenoate 203743-03-72-Propenoic acid, 2-methyl-, hexadecyl ester, polymers with 2-hydroxyethyl methacrylate, ã-ù-perfluoro-C10-16-alkyl acrylate and stearyl methacrylate 29420-49-3Potassium perfluorobutane sulfonate 375-73-5Perfluorobutane sulfonic acid 45187-15-3Perfluorobutanesulfonate (16) For calendar year reporting period 2024 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: CAS #Chemical Name 375-22-4 Perfluorobutanoic acid 2218-54-4 Sodium perfluorobutanoate 2966-54-3 Potassium heptafluorobutanoate 10495-86-0Ammonium perfluorobutanoate 45048-62-2Perfluorobutanoate 2728655-42-1 Alcohols, C8-16, γ-ω-perfluoro, reaction products with 1,6-diisocyanatohexane, glycidol and stearyl alc. 2738952-61-7Acetamide, N-[3-(dimethylamino)propyl]-, 2-[(γ-ω-perfluoro- C4-20-alkyl)thio] derivs. 2742694-36-4 Acetamide, N-(2-aminoethyl)-, 2-[(γ-ω-perfluoro-C4-20-alkyl)thio] derivs., polymers with N1,N1-dimethyl-1,3-propanediamine, epichlorohydrin and ethylenediamine, oxidized 2744262-09-5 Acetic acid, 2-[(γ-ω-perfluoro-C4-20-alkyl)thio] derivs., 2-hydroxypropyl esters 683-18-1 Dibutyltin dichloride 96-23-1 1,3-Dichloro-2-propanol 75-12-7 Formamide 1222-05-51,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzop yran 111-41-1n-Hydroxyethylethylenediamine 5064-31-3Nitrilotriacetic acid trisodium salt 140-66-9p-(1,1,3,3-Tetramethylbutyl)phenol 87-61-61,2,3-Trichlorobenzene 2451-62-9Triglycidyl isocyanurate 115-96-8Tris(2-chloroethyl) phosphate 13674-87-8Tris(1,3-dichloro-2-propyl) phosphate 25155-23-1 Tris(dimethylphenol) phosphate Further, for calendar year reporting period 2024 and thereafter, the toxic or hazardous substance list shall include the following substance category, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: The diisononyl phthalate (DINP) category includes all branched alkyl diesters of 1,2 benzenedicarboxylic acid in which alkyl ester moieties contain a total of nine carbons.

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.03 continued

41.03: continued (17) For calendar year reporting period 2025 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: CAS # Chemical Name 307-24-4 Perfluorohexanoic acid 422-64-0 Perfluoropropanoic acid 2923-26-4 Sodium perfluorohexanoate 21615-47-4 Ammonium perfluorohexanoate 82113-65-3 1,1,1-Trifluoro-N-[(trifluoromethyl)sulfonyl] methanesulfonamide 90076-65-6 Lithium bis[(trifluoromethyl)sulfonyl] azanide 2816091-53-7 Betaines, dimethyl (.gamma.-.omega.-perfluoro-.gamma.- hydro-C8-18-alkyl) (18) For calendar year reporting period 2026 and thereafter, the toxic or hazardous substance list shall include the following substances, consistent with changes in the toxic chemical list established pursuant to EPCRA § 313: CAS #Chemical Name 377-73-1Perfluoro-3-methoxypropanoic acid 3108-42-7Ammonium perfluorodecanoate (PFDA NH4) 3830-45-3Sodium perfluorodecanoate (PFDA-Na) 27619-97-26:2 Fluorotelomer sulfonate acid 425670-75-36:2 Fluorotelomer sulfonate anion 59587-38-16:2 Fluorotelomer sulfonate potassium salt 59587-39-26:2 Fluorotelomer sulfonate ammonium salt 27619-94-96:2 Fluorotelomer sulfonate sodium salt 3030471-22-5Acetic acid, [(γ-ω-perfluoro-C8-10-alkyl)thio] derivs., Bu esters

41.04 Amendment of the Toxic or Hazardous Substance List

41.04: Amendment of the Toxic or Hazardous Substance List (1) The council may amend the toxic or hazardous substance list by adding or deleting substances. The council shall add no more than ten substances in any year. The council shall delete no more than ten substances in any year. Any addition or deletion of a substance shall take effect the calendar year immediately following the year in which the addition or deletion is codified in 301 CMR 41.00. (2) The council shall adjust the toxic or hazardous substance list each year to add or delete substances consistent with changes in the toxic chemical list established pursuant to EPCRA § 313 and with changes in the lists of chemicals established pursuant to CERCLA §§ 101(14) and 102. The council shall make additions and deletions under 301 CMR 41.04(2) in addition to any actions it takes under 301 CMR 41.04(1). (3) In adding or deleting substances under 301 CMR 41.04(1), the council shall consider recommendations from the Toxics Use Reduction Institute and the Science Advisory Board.

41.05 Designation of Higher Hazard and Lower Hazard Substances

41.05: Designation of Higher Hazard and Lower Hazard Substances (1) The council shall designate substances as higher hazard substances, lower hazard substances, or may leave substances as otherwise uncategorized substances. The council shall designate no more than ten higher hazard substances and no more than ten lower hazard substances in any year. Any designation of a substance as a higher hazard or a lower hazard substance shall not take effect until the calendar year immediately following the year in which the designation is codified in 301 CMR 41.00. (2) In designating substances as higher hazard or lower hazard substances under 301 CMR 41.05(1), the council shall consult with the Toxics Use Reduction Institute and the Science Advisory Board.

41.06 Higher Hazard Substances

41.06: Higher Hazard Substances (1) For calendar year reporting period 2008 and thereafter, those substances identified as chemicals of special concern in 40 CFR Part 372.28 shall be designated as higher hazard substances. 2/27/26 (Effective 12/19/25) - corrected301 CMR - 246.13

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.06 continued

41.06: continued (2) For calendar year reporting period 2008 and thereafter, the following substances shall be designated as higher hazard substances: CAS #Chemical Name 79-01-6Trichloroethylene 7440-43-9Cadmium Cadmium Compounds (3) For calendar year reporting period 2009 and thereafter, the following substance shall be designated as a higher hazard substance: CAS #Chemical Name 127-18-4Perchlorethylene (4) For calendar year reporting period 2012 and thereafter, the following substances shall be designated as higher hazard substances: CAS #Chemical Name 50-00-0Formaldehyde Hexavalent Chromium Compounds (5) For calendar year reporting period 2014 and thereafter, the following substance shall be designated as a higher hazard substance: CAS #Chemical Name 75-09-2Methylene chloride (6) For calendar year reporting period 2016 and thereafter, the following substances shall be designated as higher hazard substances: CAS #Chemical Name 106-94-51-Bromopropane 68-12-2Dimethylformamide 7664-39-3Hydrogen fluoride Cyanide compounds (7) For calendar year reporting period 2017 and thereafter, the following substances shall be designated as higher hazard substances: CAS #Chemical Name 584-84-92,4 - Toluene diisocyanate 91-08-72,6 - Toluene diisocyanate 26471-62-5Toluene diisocyanate - mixed isomers

41.07 Lower Hazard Substances

41.07: Lower Hazard Substances (1) For calendar year reporting period 2009 and thereafter, the following substances shall be designated as lower hazard substances: CAS #Chemical Name 78-83-1Isobutyl alcohol 78-92-2Sec-butyl alcohol 71-36-3N-butyl alcohol

301 CMR: EXECUTIVE OFFICE OF ENERGY AND ENVIRONMENTAL AFFAIRS

41.07 continued

41.07: continued (2) For calendar year reporting period 2010 and thereafter, the following substances shall be designated as lower hazard substances: CAS #Chemical Name 123-86-4Butyl acetate 110-19-0Isobutyl acetate 7705-08-0Ferric chloride 10028-22-5Ferric sulfate 7758-94-3Ferrous chloride 7720-78-7Ferrous sulfate 7782-63-0Ferrous sulfate REGULATORY AUTHORITY 301 CMR 41.00: M.G.L. c. 21I, §§ 4 and 9.