RMP on-site quantities by chemical

(This table shows amounts of each chemical within processes that have worst-case accidents than could potentially reach off-site. Facilities that are no longer registered with RMP are not included.)


Table sorted by number of facilities: re-sort using column headers

Chemical NameChemical Type# of facilitiesPounds in processes
Ammonia (anhydrous)Toxic6,98410,335,041,774
ChlorineToxic2,345844,296,914
Flammable MixtureFlammable87934,947,641,511
PropaneFlammable63411,151,054,831
Sulfur dioxide (anhydrous)Toxic45039,793,235
Ammonia (conc 20% or greater)Toxic428209,118,919
ButaneFlammable4268,353,062,828
Isobutane [Propane, 2-methyl]Flammable2092,218,260,475
PentaneFlammable205581,832,388
Formaldehyde (solution)Toxic175174,619,895
Propylene [1-Propene]Flammable1461,516,608,721
Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid]Toxic14186,769,662
Isopentane [Butane, 2-methyl-]Flammable134188,785,449
Vinyl acetate monomer [Acetic acid ethenyl ester]Toxic107471,559,277
HydrogenFlammable10111,932,645
Propylene oxide [Oxirane, methyl-]Toxic90340,036,961
MethaneFlammable90135,657,239
Ethylene [Ethene]Flammable891,079,440,426
Ethylene oxide [Oxirane]Toxic86190,126,603
Acrylonitrile [2-Propenenitrile]Toxic82342,858,977
Hydrogen chloride (anhydrous) [Hydrochloric acid]Toxic8026,678,491
1,3-ButadieneFlammable68367,235,369
Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-]Toxic64137,583,102
EthaneFlammable622,778,708,315
Chlorine dioxide [Chlorine oxide (ClO2)]Toxic591,918,287
1-ButeneFlammable57324,841,382
Ethyl mercaptan [Ethanethiol]Flammable5310,930,104
Ethylenediamine [1,2-Ethanediamine]Toxic5248,970,456
Difluoroethane [Ethane, 1,1-difluoro-]Flammable4916,035,793
Epichlorohydrin [Oxirane, (chloromethyl)-]Toxic49134,036,813
Hydrochloric acid (conc 37% or greater)Toxic4739,480,830
Hydrogen sulfideToxic466,529,589
Methyl chloride [Methane, chloro-]Toxic4461,188,634
Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide]Toxic44159,961,381
2-Methylpropene [1-Propene, 2-methyl-]Flammable44800,636,495
Dimethylamine [Methanamine, N-methyl-]Flammable4338,021,477
Methyl ether [Methane, oxybis-]Flammable4214,052,806
Chloroform [Methane, trichloro-]Toxic4098,060,064
Acetylene [Ethyne]Flammable382,416,864
Carbon disulfideToxic3639,193,182
Ethyl ether [Ethane, 1,1'-oxybis-]Flammable3521,394,530
Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-]Toxic3444,400,182
Cyclohexylamine [Cyclohexanamine]Toxic3416,842,346
Vinyl chloride [Ethene, chloro-]Flammable32782,736,462
Isoprene [1,3-Butadiene, 2-methyl-]Flammable30137,432,105
Isopropylamine [2-Propanamine]Flammable2940,122,076
Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-]Toxic2957,571,344
AcetaldehydeFlammable2734,276,029
Methylamine [Methanamine]Flammable2633,133,405
Trimethylamine [Methanamine, N,N-dimethyl-]Flammable2615,984,714
Phosphorus trichloride [Phosphorous trichloride]Toxic2425,316,895
Sulfur trioxideToxic2223,213,860
Phosphorus oxychloride [Phosphoryl chloride]Toxic2213,675,397
ButeneFlammable2252,535,666
BromineToxic2213,647,305
Trichlorosilane [Silane, trichloro-]Flammable2034,195,683
Allyl alcohol [2-Propen-1-ol]Toxic1926,176,825
Ethyl chloride [Ethane, chloro-]Flammable1820,066,500
Boron trifluoride [Borane, trifluoro-]Toxic161,172,200
Nitric acid (conc 80% or greater)Toxic1638,673,838
Trimethylchlorosilane [Silane, chlorotrimethyl-]Toxic1618,510,907
Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-]Toxic155,691,425
Phosgene [Carbonic dichloride]Toxic151,367,643
Hydrocyanic acidToxic159,163,033
Acrolein [2-Propenal]Toxic153,284,055
2-Butene-cisFlammable157,756,151
2-Butene-trans [2-Butene, (E)]Flammable148,030,080
Methyltrichlorosilane [Silane, trichloromethyl-]Toxic1427,489,078
1,3-PentadieneFlammable1362,279,062
HydrazineToxic1315,734,076
2-Methyl-1-buteneFlammable128,019,422
2-ButeneFlammable124,075,622
Vinylidene chloride [Ethene, 1,1-dichloro-]Flammable1246,270,177
1-PenteneFlammable1239,285,814
Methyl mercaptan [Methanethiol]Toxic1124,836,494
Ethylamine [Ethanamine]Flammable1111,228,350
ArsineToxic1082,570
Dimethyldichlorosilane [Silane, dichlorodimethyl-]Toxic1017,842,938
Peracetic acid [Ethaneperoxoic acid]Toxic911,978,156
Propionitrile [Propanenitrile]Toxic914,570,033
PiperidineToxic914,565,618
3-Methyl-1-buteneFlammable81,607,094
Methyl formate [Formic acid, methyl ester]Flammable82,963,617
Isopropyl chloroformate [Carbonochloridic acid, 1-methylethy ester]Toxic7771,710
CBI Flammable SubstanceFlammable71,013,718
Vinylidene fluoride [Ethene, 1,1-difluoro-]Flammable72,392,000
Dichlorosilane [Silane, dichloro-]Flammable7854,000
SilaneFlammable61,386,812
2-Pentene, (E)-Flammable62,323,672
Tetramethylsilane [Silane, tetramethyl-]Flammable6398,532
Trifluorochloroethylene [Ethene, chlorotrifluoro-]Flammable62,275,000
Propyne [1-Propyne]Flammable5167,000
Hydrogen selenideToxic558,065
2-Pentene, (Z)-Flammable51,646,553
Methyl hydrazine [Hydrazine, methyl-]Toxic511,628,324
2,2-Dimethylpropane [Propane, 2,2-dimethyl-]Flammable5649,000
Propyl chloroformate [Carbonochloridic acid, propylester]Toxic4272,550
Vinyl acetylene [1-Buten-3-yne]Flammable4306,074
FluorineToxic448,027
Ethyl acetylene [1-Butyne]Flammable4168,718
Isopropyl chloride [Propane, 2-chloro-]Flammable41,320,843
Methyl chloroformate [Carbonochloridic acid, methylester]Toxic4375,398
1-Chloropropylene [1-Propene, 1-chloro-]Flammable3582,979
2-Chloropropylene [1-Propene, 2-chloro-]Flammable31,284,203
Crotonaldehyde [2-Butenal]Toxic39,109,608
Tetrafluoroethylene [Ethene, tetrafluoro-]Flammable3548,000
Vinyl methyl ether [Ethene, methoxy-]Flammable35,469,000
FuranToxic33,780,367
Isobutyronitrile [Propanenitrile, 2-methyl-]Toxic314,188,342
Propadiene [1,2-Propadiene]Flammable3113,000
Propyleneimine [Aziridine, 2-methyl-]Toxic311,383,408
1,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-]Toxic3194,313
Boron trichloride [Borane, trichloro-]Toxic3114,500
Chloromethyl methyl ether [Methane, chloromethoxy-]Toxic2490,112
Ethyleneimine [Aziridine]Toxic211,357,144
Vinyl fluoride [Ethene, fluoro-]Flammable2878,000
Crotonaldehyde, (E)- [2-Butenal, (E)-]Toxic2145,608
Methacrylonitrile [2-Propenenitrile, 2-methyl-]Toxic211,275,793
PhosphineToxic237,000
Allylamine [2-Propen-1-amine]Toxic2267,366
Vinyl ethyl ether [Ethene, ethoxy-]Flammable156,500
Chloromethyl ether [Methane, oxybis[chloro-]Toxic114,477
Tetranitromethane [Methane, tetranitro-]Toxic168,263
Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-]Toxic1450,000
CBI AcidsToxic149,000
Acrylyl chloride [2-Propenoyl chloride]Toxic148,000
Iron, pentacarbonyl- [Iron carbonyl (Fe(CO)5), (TB-5-11)-]Toxic138,500
Nitrogen TetroxideToxic130,000
Total----80,214,206,420


This search was done on November 16, 2018. It was compiled from government data last released on April 30, 2018. This search result was produced by RTK NET. The data were obtained from the U.S. EPA's Risk Management System database (RMP).