RMP Assistant Step 1

STEP 1: Does my facility have any of the following chemicals present in a process(es) above the corresponding threshold quantity?


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
Note: Consider each regulated chemical separately from this point on.

Yes. I have one or more of these chemicals at or above their listed thresholds.

No. I do not have one or more of these chemicals at or above their listed thresholds.

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