OSHA PSM vs EPA RMP: chemical threshold quantities side by side

Side-by-side comparison of threshold quantities for hazardous chemicals regulated under OSHA's Process Safety Management standard (29 CFR 1910.119 Appendix A) and EPA's Risk Management Program (40 CFR 68.130). Each record is one chemical with the threshold quantity in pounds that triggers obligations under each program. Many chemicals appear on both lists with different thresholds — chlorine is 1,500 lbs under PSM and 2,500 lbs under RMP; ethylene oxide is 5,000 lbs under PSM and 10,000 lbs under RMP. EPA has ~27 chemicals not on the OSHA list and OSHA has ~79 not on EPA's. Answers 'is [chemical] covered by PSM, RMP, or both?', 'what is the threshold quantity for chlorine under each program?', and 'which chemicals have different thresholds under PSM and RMP?'

Records225

Sources2

Verified2026-08-15

Review by2027-08-15

LicenceUS federal regulation — public domain

46 records where two or more sources state different values. Both sides are reproduced on the record page, each with its own source and quote.

The data

Substance	CAS No.	EPA RMP TQ (lbs)	RMP category	RMP basis for listing	OSHA PSM TQ (lbs)
1,1-Dimethylhydrazine [Hydrazine, 1,1-dimethyl-]sources differ	57-14-7	15,000	toxic	b
1,3-Butadiene	106-99-0	10,000	flammable	f
1,3-Pentadinene	504-60-9	10,000	flammable	f
1-Butene	106-98-9	10,000	flammable	f
1-Chloro-2,4-Dinitrobenzene	97-00-7				5000
1-Chloropropylene [1-Propene, 1-chloro-]	590-21-6	10,000	flammable	g
1-Pentene	109-67-1	10,000	flammable	g
2,2-Dimethylpropane [Propane, 2,2-dimethyl-]	463-82-1	10,000	flammable	f
2,4-Dinitroaniline	97-02-9				5000
2-Butene	107-01-7	10,000	flammable	f
2-Butene-cis	590-18-1	10,000	flammable	f
2-Butene-trans [2-Butene, (E)]	624-64-6	10,000	flammable	f
2-Chloropropylene [1-Propene, 2-chloro-]	557-98-2	10,000	flammable	g
2-Methyl-1-butene	563-46-2	10,000	flammable	g
2-Methylpropene [1-Propene, 2-methyl-]	115-11-7	10,000	flammable	f
2-Pentene, (E)-	646-04-8	10,000	flammable	g
2-Pentene, (Z)-	627-20-3	10,000	flammable	g
3-Bromopropyne (also called Propargyl Bromide)	106-96-7				100
3-Methyl-1-butene	563-45-1	10,000	flammable	f
Acetaldehyde	75-07-0				2500
Acetylene [Ethyne]	74-86-2	10,000	flammable	f
Acrolein (2-Propenal)sources differ	107-02-8				150
Acrylonitrile [2-Propenenitrile]	107-13-1	20,000	toxic	b
Acrylyl Chloridesources differ	814-68-6				250
Alkylaluminums	Varies				5000
Allyl alcohol [2-Propen-l-ol]	107-18-6	15,000	toxic	b
Allyl Chloride	107-05-1				1000
Allylaminesources differ	107-11-9				1000
Ammonia, Anhydrous	7664-41-7				10000
Ammonia (anhydrous)	7664-41-7	10,000	toxic	a, b
Ammonia (conc 20% or greater)	7664-41-7	20,000	toxic	a, b
Ammonia solutions (>44% ammonia by weight)	7664-41-7				15000
Ammonium Perchlorate	7790-98-9				7500
Ammonium Permanganate	7787-36-2				7500
Arsenous trichloride	7784-34-1	15,000	toxic	b
Arsinesources differ	7784-42-1	1,000	toxic	b
Bis(Chloromethyl) Ethersources differ	542-88-1				100
Boron Trichloridesources differ	10294-34-5				2500
Boron Trifluoridesources differ	7637-07-2				250
Boron trifluoride compound with methyl ether (1:1) [Boron, trifluoro [oxybis [metane]]-, T-4-	353-42-4	15,000	toxic	b
Bromine	7726-95-6				1500
Bromine Chloride	13863-41-7				1500
Bromine Pentafluoride	7789-30-2				2500
Bromine Trifluoride	7787-71-5				15000
Bromotrifluorethylene [Ethene, bromotrifluoro-]	598-73-2	10,000	flammable	f
Butane	106-97-8	10,000	flammable	f
Butene	25167-67-3	10,000	flammable	f
Butyl Hydroperoxide (Tertiary)	75-91-2				5000
Butyl Perbenzoate (Tertiary)	614-45-9				7500
Carbon disulfide	75-15-0	20,000	toxic	b
Carbon oxysulfide [Carbon oxide sulfide (COS)]	463-58-1	10,000	flammable	f
Carbonyl Chloride (see Phosgene)	75-44-5				100
Carbonyl Fluoride	353-50-4				2500
Cellulose Nitrate (concentration >12.6% nitrogen)	9004-70-0				2500
Chlorine	7782-50-5				1500
Chlorine Dioxidesources differ	10049-04-4				1000
Chlorine monoxide [Chlorine oxide]	7791-21-1	10,000	flammable	f
Chlorine Pentrafluoride	13637-63-3				1000
Chlorine Trifluoride	7790-91-2				1000
Chlorodiethylaluminum (also called Diethylaluminum Chloride)	96-10-6				5000
Chloroform [Methane, trichloro-]	67-66-3	20,000	toxic	b
Chloromethyl Methyl Ethersources differ	107-30-2				500
Chloropicrin	76-06-2				500
Chloropicrin and Methyl Bromide mixture	None				1500
Chloropicrin and Methyl Chloride mixture	None				1500
Crotonaldehyde [2-Butenal]	4170-30-3	20,000	toxic	b
Crotonaldehyde, (E)- [2-Butenal, (E)-]	123-73-9	20,000	toxic	b
Cumene Hydroperoxide	80-15-9				5000
Cyanogensources differ	460-19-5				2500
Cyanogen Chloridesources differ	506-77-4				500
Cyanuric Fluoride	675-14-9				100
Cyclohexylamine [Cyclohexanamine]	108-91-8	15,000	toxic	b
Cyclopropane	75-19-4	10,000	flammable	f
Diacetyl Peroxide (Concentration >70%)	110-22-5				5000
Diazomethane	334-88-3				500
Dibenzoyl Peroxide	94-36-0				7500
Diborane	19287-45-7				100
Dibutyl Peroxide (Tertiary)	110-05-4				5000
Dichloro Acetylene	7572-29-4				250
Dichlorosilanesources differ	4109-96-0				2500
Diethylzinc	557-20-0				10000
Difluoroethane [Ethane, 1,1-difluoro-]	75-37-6	10,000	flammable	f
Diisopropyl Peroxydicarbonate	105-64-6				7500
Dilaluroyl Peroxide	105-74-8				7500
Dimethylamine, Anhydroussources differ	124-40-3				2500
Dimethyldichlorosilanesources differ	75-78-5				1000
Epichlorohydrin [Oxirane, (chloromethyl)-]	106-89-8	20,000	toxic	b
Ethane	74-84-0	10,000	flammable	f
Ethyl acetylene [1-Butyne]	107-00-6	10,000	flammable	f
Ethyl chloride [Ethane, chloro-]	75-00-3	10,000	flammable	f
Ethyl ether [Ethane, 1,1′-oxybis-]	60-29-7	10,000	flammable	g
Ethyl mercaptan [Ethanethiol]	75-08-1	10,000	flammable	g
Ethyl Methyl Ketone Peroxide (also Methyl Ethyl Ketone Peroxide; concentration >60%)	1338-23-4				5000
Ethyl Nitritesources differ	109-95-5				5000
Ethylaminesources differ	75-04-7				7500
Ethylene [Ethene]	74-85-1	10,000	flammable	f
Ethylene Fluorohydrin	371-62-0				100
Ethylene Oxidesources differ	75-21-8				5000
Ethylenediamine [1,2-Ethanediamine]	107-15-3	20,000	toxic	b
Ethyleneiminesources differ	151-56-4				1000
Fluorine	7782-41-4				1000
Formaldehyde (Formalin)sources differ	50-00-0				1000
Furan	110-00-9				500
Hexafluoroacetone	684-16-2				5000
Hydrazine	302-01-2	15,000	toxic	b
Hydrochloric Acid, Anhydrous	7647-01-0				5000
Hydrochloric acid (conc 37% or greater)	7647-01-0	15,000	toxic	d
Hydrocyanic acidsources differ	74-90-8	2,500	toxic	a, b
Hydrofluoric Acid, Anhydrous	7664-39-3				1000
Hydrogen	1333-74-0	10,000	flammable	f
Hydrogen Bromide	10035-10-6				5000
Hydrogen Chloride	7647-01-0				5000
Hydrogen chloride (anhydrous) [Hydrochloric acid]	7647-01-0	5,000	toxic	a
Hydrogen Fluoride	7664-39-3				1000
Hydrogen fluoride/Hydrofluoric acid (conc 50% or greater) [Hydrofluoric acid]	7664-39-3	1,000	toxic	a, b
Hydrogen Peroxide (52% by weight or greater)	7722-84-1				7500
Hydrogen Selenidesources differ	7783-07-5				150
Hydrogen Sulfidesources differ	7783-06-4				1500
Hydroxylamine	7803-49-8				2500
Iron, Pentacarbonylsources differ	13463-40-6				250
Isobutane [Propane, 2-methyl]	75-28-5	10,000	flammable	f
Isobutyronitrile [Propanenitrile, 2-methyl-]	78-82-0	20,000	toxic	b
Isopentane [Butane, 2-methyl-]	78-78-4	10,000	flammable	g
Isoprene [1,3-Butadinene, 2-methyl-]	78-79-5	10,000	flammable	g
Isopropyl chloride [Propane, 2-chloro-]	75-29-6	10,000	flammable	g
Isopropyl chloroformate [Carbonochloridic acid, 1-methylethyl ester]	108-23-6	15,000	toxic	b
Isopropylaminesources differ	75-31-0				5000
Ketene	463-51-4				100
Methacrylaldehyde	78-85-3				1000
Methacrylonitrile [2-Propenenitrile, 2-methyl-]sources differ	126-98-7	10,000	toxic	b
Methacryloyl Chloride	920-46-7				150
Methacryloyloxyethyl Isocyanate	30674-80-7				100
Methane	74-82-8	10,000	flammable	f
Methyl Bromide	74-83-9				2500
Methyl Chloridesources differ	74-87-3				15000
Methyl Chloroformatesources differ	79-22-1				500
Methyl ether [Methane, oxybis-]	115-10-6	10,000	flammable	f
Methyl Ethyl Ketone Peroxide (concentration >60%)	1338-23-4				5000
Methyl Fluoroacetate	453-18-9				100
Methyl Fluorosulfate	421-20-5				100
Methyl formate [Formic acid, methyl ester]	107-31-3	10,000	flammable	g
Methyl Hydrazinesources differ	60-34-4				100
Methyl Iodide	74-88-4				7500
Methyl Isocyanatesources differ	624-83-9				250
Methyl Mercaptansources differ	74-93-1				5000
Methyl thiocyanate [Thiocyanic acid, methyl ester]	556-64-9	20,000	toxic	b
Methyl Vinyl Ketone	78-94-4				100
Methylamine, Anhydroussources differ	74-89-5				1000
Methyltrichlorosilanesources differ	75-79-6				500
Nickel Carbonly (Nickel Tetracarbonyl)sources differ	13463-39-3				150
Nitric Acid (94.5% by weight or greater)sources differ	7697-37-2				500
Nitric Oxidesources differ	10102-43-9				250
Nitroaniline (para Nitroaniline	100-01-6				5000
Nitrogen Dioxide	10102-44-0				250
Nitrogen Oxides (NO; NO2; N204; N203)	10102-44-0				250
Nitrogen Tetroxide (also called Nitrogen Peroxide)	10544-72-6				250
Nitrogen Trifluoride	7783-54-2				5000
Nitrogen Trioxide	10544-73-7				250
Nitromethane	75-52-5				2500
Oleum (65% to 80% by weight; also called Fuming Sulfuric Acid)sources differ	8014-95-7				1,000
Osmium Tetroxide	20816-12-0				100
Oxygen Difluoride (Fluorine Monoxide)	7783-41-7				100
Ozone	10028-15-6				100
Pentaborane	19624-22-7				100
Pentane	109-66-0	10,000	flammable	g
Peracetic Acid (concentration >60% Acetic Acid; also called Peroxyacetic Acid)	79-21-0				1000
Peracetic acid [Ethaneperoxoic acid]	79-21-0	10,000	toxic	b
Perchloric Acid (concentration >60% by weight)	7601-90-3				5000
Perchloromethyl Mercaptansources differ	594-42-3				150
Perchloryl Fluoride	7616-94-6				5000
Peroxyacetic Acid (concentration >60% Acetic Acid; also called Peracetic Acid)	79-21-0				1000
Phosgene (also called Carbonyl Chloride)	75-44-5				100
Phosgene [Carbonic dichloride]	75-44-5	500	toxic	a, b
Phosphinesources differ	7803-51-2	5,000	toxic	b
Phosphorus Oxychloride (also called Phosphoryl Chloride)	10025-87-3				1000
Phosphorus oxychloride [Phosphoryl chloride]	10025-87-3	5,000	toxic	b
Phosphorus Trichloridesources differ	7719-12-2				1000
Phosphoryl Chloride (also called Phosphorus Oxychloride)	10025-87-3				1000
Piperidine	110-89-4	15,000	toxic	b
Propadiene [1,2-Propadiene]	463-49-0	10,000	flammable	f
Propane	74-98-6	10,000	flammable	f
Propargyl Bromide	106-96-7				100
Propionitrile [Propanenitrile]	107-12-0	10,000	toxic	b
Propyl chloroformate [Carbonochloridic acid, propylester]	109-61-5	15,000	toxic	b
Propyl Nitrate	627-3-4				2500
Propylene [1-Propene]	115-07-1	10,000	flammable	f
Propylene oxide [Oxirane, methyl-]	75-56-9	10,000	toxic	b
Propyleneimine [Aziridine, 2-methyl-]	75-55-8	10,000	toxic	b
Propyne [1-Propyne]	74-99-7	10,000	flammable	f
Sarin	107-44-8				100
Selenium Hexafluoride	7783-79-1				1000
Silane	7803-62-5	10,000	flammable	f
Stibine (Antimony Hydride)	7803-52-3				500
Sulfur dioxide (anhydrous)sources differ	7446-09-5	5,000	toxic	a, b
Sulfur Pentafluoride	5714-22-7				250
Sulfur Tetrafluoridesources differ	7783-60-0				250
Sulfur trioxide	7446-11-9	10,000	toxic	a, b
Sulfur Trioxide (also called Sulfuric Anhydride)	7446-11-9				1000
Sulfuric Anhydride (also called Sulfur Trioxide)	7446-11-9				1000
Tellurium Hexafluoride	7783-80-4				250
Tetrafluoroethylenesources differ	116-14-3				5000
Tetrafluorohydrazine	10036-47-2				5000
Tetramethyl Leadsources differ	75-74-1				1000
Tetramethylsilane [Silane, tetramethyl-]	75-76-3	10,000	flammable	g
Tetranitromethane [Methane, tetranitro-]	509-14-8	10,000	toxic	b
Thionyl Chloride	7719-09-7				250
Titanium tetrachloride [Titanium chloride (TiCl4) (T-4)-]	7550-45-0	2,500	toxic	b
Toluene 2,4-diisocyanate [Benzene, 2,4-diisocyanato-1-methyl-]	584-84-9	10,000	toxic	a
Toluene 2,6-diisocyanate [Benzene, 1,3-diisocyanato-2-methyl-]	91-08-7	10,000	toxic	a
Toluene diisocyanate (unspecified isomer) [Benzene, 1,3-diisocyanatomethyl-]	26471-62-5	10,000	toxic	a
Trichloro (chloromethyl) Silane	1558-25-4				100
Trichloro (dichlorophenyl) Silane	27137-85-5				2500
Trichlorosilanesources differ	10025-78-2				5000
Trifluorochloroethylenesources differ	79-38-9				10000
Trimethylamine [Methanamine, N,N-dimethyl-]	75-50-3	10,000	flammable	f
Trimethylchlorosilane [Silane, chlorotrimethyl-]	75-77-4	10,000	toxic	b
Trimethyoxysilane	2487-90-3				1500
Vinyl acetate monomer [Acetic acid ethenyl ester]	108-05-4	15,000	toxic	b
Vinyl acetylene [1-Buten-3-yne]	689-97-4	10,000	flammable	f
Vinyl chloride [Ethene, chloro-]	75-01-4	10,000	flammable	a, f
Vinyl ethyl ether [Ethene, ethoxy-]	109-92-2	10,000	flammable	g
Vinyl fluoride [Ethene, fluoro-]	75-02-5	10,000	flammable	f
Vinyl methyl ether [Ethene, methoxy-]	107-25-5	10,000	flammable	f
Vinylidene chloride [Ethene, 1,1-dichloro-]	75-35-4	10,000	flammable	g
Vinylidene fluoride [Ethene, 1,1-difluoro-]	75-38-7	10,000	flammable	f

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 2 sources this dataset was assembled from.

ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-68/subpart-F/section-68.130
osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.119AppA

Machine-readable

data.jsonThe whole dataset — every record with its source URL and source quote.
Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
How this is made and checkedWhat "verified against source" does and does not mean.

225 records. last verified against source 2026-08-15. due for re-check by 2027-08-15.

Licence. US federal regulation — public domain