Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 1
Current through Register 2024 Notice Reg. No. 52, December 27, 2024
| Chemical Name | Also on Table 3 f | CAS Number | Threshold quantity (lbs) | Basis for listing |
| Acrolein [2-Propenal] | yes | 107-02-8 | 5,000 | b |
| Acrylonitrile [2-Propenenitrile] | yes | 107-13-1 | 20,000 | b |
| Acrylyl chloride [2-Propenoyl chloride] | yes | 814-68-6 | 5,000 | b |
| Allyl alcohol [2-Propen-l-ol] | yes | 107-18-6 | 15,000 | b |
| Allylamine [2-Propen-l-amine] | yes | 107-11-9 | 10,000 | b |
| Ammonia (anhydrous) | yes | 7664-41-7 | 10,000 | a,b |
| Ammonia (conc 20% or greater) | yes | 7664-41-7 | 20,000 | a,b |
| Arsenous trichloride | yes | 7784-34-1 | 15,000 | b |
| Arsine | yes | 7784-42-1 | 1,000 | b |
| Boron trichloride [Borane, trichloro-] | yes | 10294-34-5 | 5,000 | b |
| Boron trifluoride [Borane, trifluoro-] | yes | 7637-07-2 | 5,000 | b |
| Boron trifluoride compound with methyl ether (1:1) [Boron, trifluoro [oxybis[metane]]]-, T-4- | yes | 353-42-4 | 15,000 | b |
| Bromine | yes | 7726-95-6 | 10,000 | a,b |
| Carbon disulfide | yes | 75-15-0 | 20,000 | b |
| Chlorine | yes | 7782-50-5 | 2,500 | a,b |
| Chlorine dioxide [Chlorine oxide (ClO2)] | no | 10049-04-4 | 1,000 | c |
| Chloroform [Methane, trichloro-] | yes | 67-66-3 | 20,000 | b |
| Chloromethyl ether [Methane, oxybis[chloro-]] | yes | 542-88-1 | 1,000 | b |
| Chloromethyl methyl ether [Methane, chloromethoxy-] | yes | 107-30-2 | 5,000 | b |
| Crotonaldehyde [2-Butenal] | yes | 4170-30-3 | 20,000 | b |
| Crotonaldehyde, (E)- [2-Butenal, (E)-] | yes | 123-73-9 | 20,000 | b |
| Cyanogen chloride | no | 506-77-4 | 10,000 | c |
| Cyclohexylamine [Cyclohexanamine] | yes | 108-91-8 | 15,000 | b |
| Diborane | yes | 19287-45-7 | 2,500 | b |
| Dimethyldichlorosilane [Silane, dichlorodimethyl-] | yes | 75-78-5 | 5,000 | b |
| 1,1-Dimethylhydrazine [Hydrazine,1,1-dimethyl-] | yes | 57-14-7 | 15,000 | b |
| Epichlorohydrin [Oxirane, (chloromethyl)-] | yes | 106-89-8 | 20,000 | b |
| Ethylenediamine [1,2-Ethanediamine] | yes | 107-15-3 | 20,000 | b |
| Ethyleneimine [Aziridine] | yes | 151-56-4 | 10,000 | b |
| Ethyleneoxide [Oxirane] | yes | 75-21-8 | 10,000 | a,b |
| Fluorine | yes | 7782-41-4 | 1,000 | b |
| Formaldehyde (solution) | yes | 50-00-0 | 15,000 | b |
| Furan | yes | 110-00-9 | 5,000 | b |
| Hydrazine | yes | 302-01-2 | 15,000 | b |
| Hydrochloric acid (conc 37% or greater) | no | 7647-01-0 | 15,000 | d |
| Hydrocyanic acid | yes | 74-90-8 | 2,500 | a,b |
| Hydrogen chloride (anhydrous) [Hydrochloric acid] | yes | 7647-01-0 | 5,000 | a |
| Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid] | yes | 7664-39-3 | 1,000 | a,b |
| Hydrogen selenide | yes | 7783-07-5 | 500 | b |
| Hydrogen sulfide | yes | 7783-06-4 | 10,000 | a,b |
| Iron, pentacarbonyl-[Iron carbonyl (Fe(CO)5),(TB-5-11)-] | yes | 13463-40-6 | 2,500 | b |
| Isobutyronitrile [Propanenitrile, 2-methyl-] | yes | 78-82-0 | 20,000 | b |
| Isopropyl chloroformate [Carbonochloridic acid, 1-methylethyl ester] | yes | 108-23-6 | 15,000 | b |
| Methacrylonitrile [2-Propenenitrile, 2-methyl-] | yes | 126-98-7 | 10,000 | b |
| Methyl chloride [Methane, chloro-] | no | 74-87-3 | 10,000 | a |
| Methyl chloroformate [Carbonochloridic acid, methylester] | yes | 79-22-1 | 5,000 | b |
| Methyl hydrazine [Hydrazine, methyl-] | yes | 60-34-4 | 15,000 | b |
| Methyl isocyanate [Methane, isocyanato-] | yes | 624-83-9 | 10,000 | a,b |
| Methyl mercaptan [Methanethiol] | yes | 74-93-1 | 10,000 | b |
| Methyl thiocyanate [Thiocyanic acid, methyl ester] | yes | 556-64-9 | 20,000 | b |
| Methyltrichlorosilane [Silane, trichloromethyl-] | yes | 75-79-6 | 5,000 | b |
| Nickel carbonyl | yes | 13463-39-3 | 1,000 | b |
| Nitric acid (conc 80% or greater) | yes | 7697-37-2 | 15,000 | b |
| Nitric oxide [Nitrogen oxide (NO)] | yes | 10102-43-9 | 10,000 | b |
| Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide] 1 | no | 8014-95-7 | 10,000 | e |
| Peracetic acid [Ethaneperoxoic acid] | yes | 79-21-0 | 10,000 | b |
| Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-] | yes | 594-42-3 | 10,000 | b |
| Phosgene [Carbonic dichloride] | yes | 75-44-5 | 500 | a,b |
| Phosphine | yes | 7803-51-2 | 5,000 | b |
| Phosphorus oxychloride [Phosphoryl chloride] | yes | 10025-87-3 | 5,000 | b |
| Phosphorus trichloride [Phosphorous trichloride] | yes | 7719-12-2 | 15,000 | b |
| Piperidine | yes | 110-89-4 | 15,000 | b |
| Propionitrile [Propanenitrile] | yes | 107-12-0 | 10,000 | b |
| Propyl chloroformate [Carbonochloridic acid, propylester] | yes | 109-61-5 | 15,000 | b |
| Propyleneimine [Aziridine,2-methyl-] | yes | 75-55-8 | 10,000 | b |
| Propylene oxide [Oxirane, methyl-] | yes | 75-56-9 | 10,000 | b |
| Sulfur dioxide (anhydrous) | yes | 7446-09-5 | 5,000 | a,b |
| Sulfur tetrafluoride [Sulfur fluoride (SF4), (T-4)-] | yes | 7783-60-0 | 2,500 | b |
| Sulfur trioxide | yes | 7446-11-9 | 10,000 | a,b |
| Tetramethyllead [Plumbane, tetramethyl-] | yes | 75-74-1 | 10,000 | b |
| Tetranitromethane [Methane, tetranitro-] | yes | 509-14-8 | 10,000 | b |
| Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-] | yes | 7550-45-0 | 2,500 | b |
| Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-] 1 | yes | 584-84-9 | 10,000 | a |
| Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-] 1 | yes | 91-08-7 | 10,000 | a |
| Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-] 1 | no | 26471-62-5 | 10,000 | a |
| Trimethylchlorosilane [Silane, chlorotrimethyl-] | yes | 75-77-4 | 10,000 | b |
| Vinyl acetate monomer [Acetic acid ethenyl ester] | yes | 108-05-4 | 15,000 | b |
| Note -- Basis for Listing: | ||||
| a Mandated for listing by Congress. | ||||
| b On EHS list, vapor pressure 10 mmHg or greater. | ||||
| c Toxic gas. | ||||
| d Toxicity of hydrogen chloride, potential to release hydrogen chloride, and history of accidents. | ||||
| e Toxicity of sulfur trioxide and sulfuric acid, potential to release sulfur trioxide, and history of accidents. | ||||
| f This column identifies substances which may appear on Table 3. Table 3 may not have concentration limitations. | ||||
1 The exemption in Section 5130.2(b)(1)(B) regarding portions of a process where this regulated substance is handled at partial pressures below 10 mm Hg does not apply to this substance.
Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 1