Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 2
Current through Register 2024 Notice Reg. No. 52, December 27, 2024
| Chemical Name | CAS Number | Threshold quantity (lbs) | Basis for listing |
| Acetaldehyde | 75-07-0 | 10,000 | g |
| Acetylene [Ethyne] | 74-86-2 | 10,000 | f |
| Bromotrifluorethylene [Ethene, bromotrifluoro-] | 598-73-2 | 10,000 | f |
| 1,3-Butadiene | 106-99-0 | 10,000 | f |
| Butane | 106-97-8 | 10,000 | f |
| 1-Butene | 106-98-9 | 10,000 | f |
| 2-Butene | 107-01-7 | 10,000 | f |
| Butene | 25167-67-3 | 10,000 | f |
| 2-Butene-cis | 590-18-1 | 10,000 | f |
| 2-Butene-trans [2-Butene, (E)] | 624-64-6 | 10,000 | f |
| Carbon oxysulfide [Carbon oxide sulfide (COS)] | 463-58-1 | 10,000 | f |
| Chlorine monoxide [Chlorine oxide] | 7791-21-1 | 10,000 | f |
| 2-Chloropropylene [1-Propene, 2-chloro-] | 557-98-2 | 10,000 | g |
| 1-Chloropropylene [1-Propene, 1-chloro-] | 590-21-6 | 10,000 | g |
| Cyanogen [Ethanedinitrile] | 460-19-5 | 10,000 | f |
| Cyclopropane | 75-19-4 | 10,000 | f |
| Dichlorosilane [Silane, dichloro-] | 4109-96-0 | 10,000 | f |
| Difluoroethane [Ethane,1,1-difluoro-] | 75-37-6 | 10,000 | f |
| Dimethylamine [Methanamine, N-methyl-] | 124-40-3 | 10,000 | f |
| 2,2-Dimethylpropane [Propane, 2,2-dimethyl-] | 463-82-1 | 10,000 | f |
| Ethane | 74-84-0 | 10,000 | f |
| Ethyl acetylene [1-Butyne] | 107-00-6 | 10,000 | f |
| Ethylamine [Ethanamine] | 75-04-7 | 10,000 | f |
| Ethyl chloride [Ethane, chloro-] | 75-00-3 | 10,000 | f |
| Ethylene [Ethene] | 74-85-1 | 10,000 | f |
| Ethyl ether [Ethane,1,1'-oxybis-] | 60-29-7 | 10,000 | g |
| Ethyl mercaptan [Ethanethiol] | 75-08-1 | 10,000 | g |
| Ethyl nitrite [Nitrous acid, ethyl ester] | 109-95-5 | 10,000 | f |
| Hydrogen | 1333-74-0 | 10,000 | f |
| Isobutane [Propane, 2-methyl] | 75-28-5 | 10,000 | f |
| Isopentane [Butane, 2-methyl-] | 78-78-4 | 10,000 | g |
| Isoprene [1,3-Butadinene, 2-methyl-] | 78-79-5 | 10,000 | g |
| Isopropylamine [2-Propanamine] | 75-31-0 | 10,000 | g |
| Isopropyl chloride [Propane, 2-chloro-] | 75-29-6 | 10,000 | g |
| Methane | 74-82-8 | 10,000 | f |
| Methylamine [Methanamine] | 74-89-5 | 10,000 | f |
| 3-Methyl-1-butene | 563-45-1 | 10,000 | f |
| 2-Methyl-1-butene | 563-46-2 | 10,000 | g |
| Methyl ether [Methane, oxybis-] | 115-10-6 | 10,000 | f |
| Methyl formate [Formic acid, methyl ester] | 107-31-3 | 10,000 | g |
| 2-Methylpropene [1-Propene, 2-methyl-] | 115-11-7 | 10,000 | f |
| 1,3-Pentadinene | 504-60-9 | 10,000 | f |
| Pentane | 109-66-0 | 10,000 | g |
| 1-Pentene | 109-67-1 | 10,000 | g |
| 2-Pentene, (E)- | 646-04-8 | 10,000 | g |
| 2-Pentene, (Z)- | 627-20-3 | 10,000 | g |
| Propadiene [1,2-Propadiene] | 463-49-0 | 10,000 | f |
| Propane | 74-98-6 | 10,000 | f |
| Propylene [1-Propene] | 115-07-1 | 10,000 | f |
| Propyne [1-Propyne] | 74-99-7 | 10,000 | f |
| Silane | 7803-62-5 | 10,000 | f |
| Tetrafluoroethylene [Ethene, tetrafluoro-] | 116-14-3 | 10,000 | f |
| Tetramethylsilane [Silane, tetramethyl-] | 75-76-3 | 10,000 | g |
| Trichlorosilane [Silane, trichloro-] | 10025-78-2 | 10,000 | g |
| Trifluorochloroethylene [Ethene, chlorotrifluoro-] | 79-38-9 | 10,000 | f |
| Trimethylamine [Methanamine, N,N-dimethyl-] | 75-50-3 | 10,000 | f |
| Vinyl acetylene [1-Buten-3-yne] | 689-97-4 | 10,000 | f |
| Vinyl chloride [Ethene, chloro-] | 75-01-4 | 10,000 | a,f |
| Vinyl ethyl ether [Ethene, ethoxy-] | 109-92-2 | 10,000 | g |
| Vinyl fluoride [Ethene, fluoro-] | 75-02-5 | 10,000 | f |
| Vinylidene chloride [Ethene, 1,1-dichloro-] | 75-35-4 | 10,000 | g |
| Vinylidene fluoride [Ethene, 1,1-difluoro-] | 75-38-7 | 10,000 | f |
| Vinylmethyl ether [Ethene, methoxy-] | 107-25-5 | 10,000 | f |
| 1 A flammable substance when used as a fuel or held for sale as a fuel at a retail facility is excluded from all provisions of this chapter (see Section 5130.5). | |||
| Note -- Basis for Listing: | |||
| a Mandated for listing by Congress. | |||
| f Flammable gas. | |||
| g Volatile flammable liquid. | |||
Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 2