RMP Chemical List and Thresholds

List of Regulated Substances Under the DEQ Chemical Accident Prevention Program

The following tables list both the toxic substances and the flammable substances regulated under the Chemical Accident Prevention Program. This is a combined list which includes chemicals regulated under both federal and Louisiana state regulatory codes (40 CFR Part 68 and LAC 33:III.Chapter 59, respectively).

List of Regulated Toxic Substances and Threshold
Quantities for Accidental Release Prevention
[Alphabetical Order - 78 Substances]
Chemical Name CAS No. Threshold Quantity (lbs.)
Acrolein [2-Propenal] 107-02-8 5,000
Acrylonitrile [2-Propenenitrile] 107-13-1 20,000
Acrylyl chloride [2-Propenoyl chloride] 814-68-6 5,000
Allyl alcohol [2-Propen-1-ol] 107-18-6 15,000
Allylamine [2-Propen-1-amine] 107-11-9 10,000
Ammonia (anhydrous) 7664-41-7 10,000
Ammonia (conc 20% or greater) 7664-41-7 20,000
Arsenous trichloride 7784-34-1 15,000
Arsine 7784-42-1 1,000
Boron trichloride [Borane, trichloro-] 10294-34-5 5,000
Boron trifluoride [Borane, trifluoro-] 7637-07-2 5,000
Boron trifluoride compound with methyl ether (1:1) [Boron, trifluoro[oxybis[metane]]-, T-4- 353-42-4 15,000
Bromine 7726-95-6 10,000
Carbon disulfide 75-15-0 20,000
Chlorine 7782-50-5 2,500
Chlorine dioxide [Chlorine oxide (ClO2)] 10049-04-4 1,000
Chloroform [Methane, trichloro-] 67-66-3 20,000
Chloromethyl ether [Methane, oxybis[chloro-] 542-88-1 1,000
Chloromethyl methyl ether [Methane, chloromethoxy-] 107-30-2 5,000
Crotonaldehyde [2-Butenal] 4170-30-3 20,000
Crotonaldehyde, (E)- [2-Butenal, (E)-] 123-73-9 20,000
Cyanogen chloride 506-77-4 10,000
Cyclohexylamine [Cyclohexanamine] 108-91-8 15,000
Diborane 19287-45-7 2,500
Dimethyldichlorosilane [Silane, dichlorodimethyl-] 75-78-5 5,000
1,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-] 57-14-7 15,000
Epichlorohydrin [Oxirane, (chloromethyl)-] 106-89-8 20,000
Ethylenediamine [1,2-Ethanediamine] 107-15-3 20,000
Ethyleneimine [Aziridine] 151-56-4 10,000
Ethylene oxide [Oxirane] 75-21-8 10,000
Fluorine 7782-41-4 1,000
Formaldehyde (solution) 50-00-0 15,000
Furan 110-00-9 5,000
Hydrazine 302-01-2 15,000
Hydrochloric acid (conc 37% or greater) 7647-01-0 15,000
Hydrocyanic acid 74-90-8 2,500
Hydrogen chloride (anhydrous) [Hydrochloric acid] 7647-01-0 5,000
Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid] 7664-39-3 1,000
Hydrogen selenide 7783-07-5 500
Hydrogen sulfide 7783-06-4 10,000
Iron, pentacarbonyl- [Iron carbonyl (Fe(CO) 5), (TB-5-11)-] 13463-40-6 2,500
Isobutyronitrile [Propanenitrile, 2-methyl-] 78-82-0 20,000
Isopropyl chloroformate [Carbonochloridic acid, 1-methylethyl ester] 108-23-6 15,000
Methacrylonitrile [2-Propenenitrile, 2-methyl-] 126-98-7 10,000
Methyl chloride [Methane, chloro-] 74-87-3 10,000
Methyl chloroformate [Carbonochloridic acid, methylester] 79-22-1 5,000
Methyl hydrazine [Hydrazine, methyl-] 60-34-4 15,000
Methyl isocyanate [Methane, isocyanato-] 624-83-9 10,000
Methyl mercaptan [Methanethiol] 74-93-1 10,000
Methyl thiocyanate [Thiocyanic acid, methyl ester] 556-64-9 20,000
Methyltrichlorosilane [Silane, trichloromethyl-] 75-79-6 5,000
Nickel carbonyl 13463-39-3 1,000
Nitric acid (conc 80% or greater) 7697-37-2 15,000
Nitric oxide [Nitrogen oxide (NO)] 10102-43-9 10,000
Nitrogen tetroxide 2 10544-72-6 250
Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide] 1 8014-95-7 10,000
Peracetic acid [Ethaneperoxoic acid] 79-21-0 10,000
Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-] 594-42-3 10,000
Phosgene [Carbonic dichloride] 75-44-5 500
Phosphine 7803-51-2 5,000
Phosphorus oxychloride [Phosphoryl chloride] 10025-87-3 5,000
Phosphorus trichloride [Phosphorous trichloride] 7719-12-2 15,000
Piperidine 110-89-4 15,000
Propionitrile [Propanenitrile] 107-12-0 10,000
Propyl chloroformate [Carbonochloridic acid, propylester] 109-61-5 15,000
Propyleneimine [Aziridine, 2-methyl-] 75-55-8 10,000
Propylene oxide [Oxirane, methyl-] 75-56-9 10,000
Sulfur dioxide (anhydrous) 7446-09-5 5,000
Sulfur tetrafluoride [Sulfur fluoride (SF4), (T-4)-] 7783-60-0 2,500
Sulfur trioxide 7446-11-9 10,000
Tetramethyllead [Plumbane, tetramethyl-] 75-74-1 10,000
Tetranitromethane [Methane, tetranitro-] 509-14-8 10,000
Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-] 7550-45-0 2,500
Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-] 1 584-84-9 10,000
Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-] 1 91-08-7 10,000
Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-] 1 26471-62-5 10,000
Trimethylchlorosilane [Silane, chlorotrimethyl-] 75-77-4 10,000
Vinyl acetate monomer [Acetic acid ethenyl ester] 108-05-4 15,000
1 The mixture exemption in 68.115(b)(1) does not apply to the substance.

2 Only applies to Louisiana







List of Regulated Flammable Substances and
Threshold Quantities for Accidental Release Prevention
[Alphabetical Order - 63 Substances]
Chemical Name CAS No. Threshold Quantity (lbs)
Acetaldehyde 75-07-0 10,000
Acetylene [Ethyne] 74-86-2 10,000
Bromotrifluorethylene [Ethene, bromotrifluoro-] 598-73-2 10,000
1,3-Butadiene 106-99-0 10,000
Butane 106-97-8 10,000
1-Butene 106-98-9 10,000
2-Butene 107-01-7 10,000
Butene 25167-67-3 10,000
2-Butene-cis 590-18-1 10,000
2-Butene-trans [2-Butene, (E)] 624-64-6 10,000
Carbon oxysulfide [Carbon oxide sulfide (COS)] 463-58-1 10,000
Chlorine monoxide [Chlorine oxide] 7791-21-1 10,000
2-Chloropropylene [1-Propene, 2-chloro-] 557-98-2 10,000
1-Chloropropylene [1-Propene, 1-chloro-] 590-21-6 10,000
Cyanogen [Ethanedinitrile] 460-19-5 10,000
Cyclopropane 75-19-4 10,000
Dichlorosilane [Silane, dichloro-] 4109-96-0 10,000
Difluoroethane [Ethane, 1,1-difluoro-] 75-37-6 10,000
Dimethylamine [Methanamine, N-methyl-] 124-40-3 10,000
2,2-Dimethylpropane [Propane, 2,2-dimethyl-] 463-82-1 10,000
Ethane 74-84-0 10,000
Ethyl acetylene [1-Butyne] 107-00-6 10,000
Ethylamine [Ethanamine] 75-04-7 10,000
Ethyl chloride [Ethane, chloro-] 75-00-3 10,000
Ethylene [Ethene] 74-85-1 10,000
Ethyl ether [Ethane, 1,1'-oxybis-] 60-29-7 10,000
Ethyl mercaptan [Ethanethiol] 75-08-1 10,000
Ethyl nitrite [Nitrous acid, ethyl ester] 109-95-5 10,000
Hydrogen 1333-74-0 10,000
Isobutane [Propane, 2-methyl] 75-28-5 10,000
Isopentane [Butane, 2-methyl-] 78-78-4 10,000
Isoprene [1,3-Butadiene, 2-methyl-] 78-79-5 10,000
Isopropylamine [2-Propanamine] 75-31-0 10,000
Isopropyl chloride [Propane, 2-chloro-] 75-29-6 10,000
Methane 74-82-8 10,000
Methylamine [Methanamine] 74-89-5 10,000
3-Methyl-1-butene 563-45-1 10,000
2-Methyl-1-butene 563-46-2 10,000
Methyl ether [Methane, oxybis-] 115-10-6 10,000
Methyl formate [Formic acid, methyl ester] 107-31-3 10,000
2-Methylpropene [1-Propene, 2-methyl-] 115-11-7 10,000
1,3-Pentadiene 504-60-9 10,000
Pentane 109-66-0 10,000
1-Pentene 109-67-1 10,000
2-Pentene, (E)- 646-04-8 10,000
2-Pentene, (Z)- 627-20-3 10,000
Propadiene [1,2-Propadiene] 463-49-0 10,000
Propane 74-98-6 10,000
Propylene [1-Propene] 115-07-1 10,000
Propyne [1-Propyne] 74-99-7 10,000
Silane 7803-62-5 10,000
Tetrafluoroethylene [Ethene, tetrafluoro-] 116-14-3 10,000
Tetramethylsilane [Silane, tetramethyl-] 75-76-3 10,000
Trichlorosilane [Silane, trichloro-] 10025-78-2 10,000
Trifluorochloroethylene [Ethene, chlorotrifluoro-] 79-38-9 10,000
Trimethylamine [Methanamine, N,N-dimethyl-] 75-50-3 10,000
Vinyl acetylene [1-Buten-3-yne] 689-97-4 10,000
Vinyl chloride [Ethene, chloro-] 75-01-4 10,000
Vinyl ethyl ether [Ethene, ethoxy-] 109-92-2 10,000
Vinyl fluoride [Ethene, fluoro-] 75-02-5 10,000
Vinylidene chloride [Ethene, 1,1-dichloro-] 75-35-4 10,000
Vinylidene fluoride [Ethene, 1,1-difluoro-] 75-38-7 10,000
Vinyl methyl ether [Ethene, methoxy-] 107-25-5 10,000

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