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)Toxic7,04110,490,688,224
ChlorineToxic2,429846,866,511
Flammable MixtureFlammable87039,550,554,048
PropaneFlammable64211,995,738,779
Sulfur dioxide (anhydrous)Toxic45047,691,747
Ammonia (conc 20% or greater)Toxic447210,486,496
ButaneFlammable4098,738,616,637
PentaneFlammable205542,261,136
Isobutane [Propane, 2-methyl]Flammable2042,285,294,836
Formaldehyde (solution)Toxic174211,666,300
Propylene [1-Propene]Flammable1471,514,567,396
Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid]Toxic14090,738,632
Isopentane [Butane, 2-methyl-]Flammable133188,354,442
Vinyl acetate monomer [Acetic acid ethenyl ester]Toxic104408,173,659
HydrogenFlammable10210,534,665
Ethylene [Ethene]Flammable891,075,976,239
Propylene oxide [Oxirane, methyl-]Toxic89350,249,816
MethaneFlammable87128,772,370
Ethylene oxide [Oxirane]Toxic85184,689,663
Acrylonitrile [2-Propenenitrile]Toxic84341,825,959
Hydrogen chloride (anhydrous) [Hydrochloric acid]Toxic8026,196,545
1,3-ButadieneFlammable71381,324,337
Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-]Toxic63118,856,913
EthaneFlammable622,777,226,840
Chlorine dioxide [Chlorine oxide (ClO2)]Toxic601,934,223
Ethyl mercaptan [Ethanethiol]Flammable5910,725,391
1-ButeneFlammable56317,058,850
Ethylenediamine [1,2-Ethanediamine]Toxic5251,014,577
Hydrogen sulfideToxic506,283,812
Epichlorohydrin [Oxirane, (chloromethyl)-]Toxic48120,262,765
Hydrochloric acid (conc 37% or greater)Toxic4839,236,659
Difluoroethane [Ethane, 1,1-difluoro-]Flammable4814,465,102
Oleum (Fuming Sulfuric acid) [Sulfuric acid, mixture with sulfur trioxide]Toxic47184,230,642
Methyl chloride [Methane, chloro-]Toxic4559,832,327
2-Methylpropene [1-Propene, 2-methyl-]Flammable43799,951,365
Dimethylamine [Methanamine, N-methyl-]Flammable4335,159,887
Methyl ether [Methane, oxybis-]Flammable4113,823,212
Chloroform [Methane, trichloro-]Toxic3997,452,215
Carbon disulfideToxic3741,518,548
Acetylene [Ethyne]Flammable362,448,624
Ethyl ether [Ethane, 1,1'-oxybis-]Flammable3521,100,323
Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-]Toxic3444,503,782
Vinyl chloride [Ethene, chloro-]Flammable33674,349,703
Cyclohexylamine [Cyclohexanamine]Toxic3216,593,706
Isoprene [1,3-Butadiene, 2-methyl-]Flammable28137,360,485
AcetaldehydeFlammable2833,906,042
Phosphorus trichloride [Phosphorous trichloride]Toxic2826,088,345
Isopropylamine [2-Propanamine]Flammable2839,529,569
Methylamine [Methanamine]Flammable2532,208,488
Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-]Toxic2578,962,031
Trimethylamine [Methanamine, N,N-dimethyl-]Flammable2515,898,284
BromineToxic2414,546,508
Sulfur trioxideToxic2222,850,120
Phosphorus oxychloride [Phosphoryl chloride]Toxic2213,287,397
ButeneFlammable2252,557,666
Trichlorosilane [Silane, trichloro-]Flammable2033,732,421
Ethyl chloride [Ethane, chloro-]Flammable1819,886,500
Allyl alcohol [2-Propen-1-ol]Toxic1721,496,659
Trimethylchlorosilane [Silane, chlorotrimethyl-]Toxic1618,220,995
Nitric acid (conc 80% or greater)Toxic1638,116,138
Boron trifluoride [Borane, trifluoro-]Toxic161,172,200
Phosgene [Carbonic dichloride]Toxic151,355,643
Methyltrichlorosilane [Silane, trichloromethyl-]Toxic1526,689,970
Hydrocyanic acidToxic1510,300,051
2-Butene-cisFlammable157,656,151
Acrolein [2-Propenal]Toxic143,236,895
2-Butene-trans [2-Butene, (E)]Flammable147,830,080
HydrazineToxic1417,712,926
1-PenteneFlammable1339,183,436
Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-]Toxic134,661,164
1,3-PentadieneFlammable1355,342,636
2-Methyl-1-buteneFlammable1310,219,422
2-ButeneFlammable123,975,622
Methyl mercaptan [Methanethiol]Toxic1225,390,252
Ethylamine [Ethanamine]Flammable1211,393,350
Vinylidene chloride [Ethene, 1,1-dichloro-]Flammable1142,430,177
PiperidineToxic1014,619,710
Dimethyldichlorosilane [Silane, dichlorodimethyl-]Toxic1017,472,769
Propionitrile [Propanenitrile]Toxic915,338,933
ArsineToxic970,603
3-Methyl-1-buteneFlammable81,607,094
Methyl formate [Formic acid, methyl ester]Flammable82,967,702
CBI Flammable SubstanceFlammable7960,977
Isopropyl chloroformate [Carbonochloridic acid, 1-methylethy ester]Toxic7811,710
Vinylidene fluoride [Ethene, 1,1-difluoro-]Flammable72,613,000
Propyl chloroformate [Carbonochloridic acid, propylester]Toxic6510,550
2-Pentene, (E)-Flammable62,323,672
Trifluorochloroethylene [Ethene, chlorotrifluoro-]Flammable61,525,000
SilaneFlammable5936,812
Tetramethylsilane [Silane, tetramethyl-]Flammable5372,792
Methyl hydrazine [Hydrazine, methyl-]Toxic511,720,924
2-Pentene, (Z)-Flammable51,646,553
2,2-Dimethylpropane [Propane, 2,2-dimethyl-]Flammable5649,000
Peracetic acid [Ethaneperoxoic acid]Toxic511,784,298
FluorineToxic550,027
Vinyl acetylene [1-Buten-3-yne]Flammable4306,074
Ethyl acetylene [1-Butyne]Flammable4124,718
Propyne [1-Propyne]Flammable4156,000
Tetrafluoroethylene [Ethene, tetrafluoro-]Flammable4606,000
Hydrogen selenideToxic446,111
Dichlorosilane [Silane, dichloro-]Flammable4556,000
Propyleneimine [Aziridine, 2-methyl-]Toxic311,383,408
FuranToxic33,780,367
Isopropyl chloride [Propane, 2-chloro-]Flammable31,156,000
1-Chloropropylene [1-Propene, 1-chloro-]Flammable3580,737
Methyl chloroformate [Carbonochloridic acid, methylester]Toxic3350,398
2-Chloropropylene [1-Propene, 2-chloro-]Flammable31,283,292
Boron trichloride [Borane, trichloro-]Toxic3114,500
1,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-]Toxic3219,313
Vinyl methyl ether [Ethene, methoxy-]Flammable35,469,000
Isobutyronitrile [Propanenitrile, 2-methyl-]Toxic314,188,342
Vinyl fluoride [Ethene, fluoro-]Flammable2880,000
Allylamine [2-Propen-1-amine]Toxic2267,366
Methacrylonitrile [2-Propenenitrile, 2-methyl-]Toxic211,275,793
Chloromethyl methyl ether [Methane, chloromethoxy-]Toxic2490,112
Crotonaldehyde [2-Butenal]Toxic29,039,608
Ethyleneimine [Aziridine]Toxic211,357,144
PhosphineToxic231,276
Propadiene [1,2-Propadiene]Flammable2102,000
Vinyl ethyl ether [Ethene, ethoxy-]Flammable156,500
Crotonaldehyde, (E)- [2-Butenal, (E)-]Toxic199,608
Iron, pentacarbonyl- [Iron carbonyl (Fe(CO)5), (TB-5-11)-]Toxic138,500
Chloromethyl ether [Methane, oxybis[chloro-]Toxic114,477
Acrylyl chloride [2-Propenoyl chloride]Toxic148,000
Perchloromethylmercaptan [Methanesulfenyl chloride, trichloro-]Toxic1450,000
CBI AcidsToxic149,000
Nitrogen TetroxideToxic130,000
Tetranitromethane [Methane, tetranitro-]Toxic168,263
Total----86,099,095,559


This search was done on November 21, 2017. It was compiled from government data last released on January 31, 2017. This search result was produced by RTK NET. The data were obtained from the U.S. EPA's Risk Management System database (RMP).