On this page you will be able to access individual Acute Exposure Guideline Level (AEGLs) values that are intended to protect most individuals in the general population, including those that might be particularly susceptible to the harmful effects of the chemicals.
Find AEGL values in the table below using the chemical name or its CAS number. The AEGL values page will also have a link to the appropriate technical support document.
If only a chemical's synonym is known, it is necessary to first find that chemical's CAS number to access the AEGL entry. To find the CAS number, enter the chemical name followed by CAS in any web search engine.
Chemical Name
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Select by Chemical Name 1,1-Dimethyl hydrazine 1,1,1-Trichloroethane 1,2-Butylene oxide 1,2-Dimethyl hydrazine 1,2,3-Trimethylbenzene 1,2,4-Trimethylbenzene 1,3-Butadiene 1,3,5-Trimethylbenzene (Mesitylene) 1,4-Dioxane 2-Ethylhexylchloroformate 2,4-Toluene Diisocyanate 2,6-Toluenediisocyanate Acetaldehyde Acetone Acetone cyanohydrin Acetonitrile Acrolein Acrylic acid Acrylonitrile Adamsite Aldicarb Allyl chloride Agent GB (Sarin) Agent GD (Soman) Agent GF Agent VX Allyl alcohol Allyl Amine Allyl chloroformate Allyltrichlorosilane Aluminum phosphide Ammonia Amyltrichlorosilane Aniline Arsenic trioxide Arsine Automotive Gasoline (Unleaded) Benzene Benzonitrile Benzyl chloroformate Biphenyl Bis (chloromethyl) ether Boron tribromide Boron trifluoride Bromine Bromine chloride Bromine pentafluoride Bromine trifluoride Bromoacetone Butane Butyltrichlorosilane BZ Cadmium Calcium cyanide Calcium phosphide Carbon disulfide Carbon monoxide Carbon tetrachloride Carbonyl fluoride Carbonyl sulfide Chlorine Chlorine dioxide Chlorine pentafluoride Chlorine trifluoride Chloroacetaldehyde Chloroacetone Chloroacetonitrile Chloroacetyl chloride Chlorobenzene Chloroform Chloromethyl methyl ether Chloromethyltrichlorosilane Chloropicrin Chlorosulfonic acid cis-1,2-Dichloroethylene cis-Crotonaldehyde Cumene Cyanogen Cyclohexyl isocyanate Cyclohexylamine Diborane Dibromoethane Dichloroacetyl chloride Dichlorodimethylsilane Dichlorophenyltrichlorosilane Dichlorosilane Dichlorvos Dicrotophos Diethyldichlorosilane Diketene Dimethyl sulfate Dimethylamine Dimethylchlorosilane Dimethyl Phosphite Diphenylchloroarsine Diphenyldichlorosilane Disulfur dichloride Dodecyltrichlorosilane Epichlorohydrin Ethyl acrylate Ethyl amine Ethyl benzene Ethyl chloroformate Ethyl isocyanate Ethyl mercaptan Ethylchlorothioformate Ethyldichloroarsine Ethylene chlorohydrin (2-chloroethanol) Ethylene diamine Ethylene oxide Ethyleneimine Ethylphosphorodichloridate Ethyltrichlorosilane Fenamiphos Fluorine Formaldehyde Furan Germane HCFC 141b HFC 134A Hexafluoroacetone Hexafluoropropylene Hexane Hexyltrichlorosilane Hydrazine Hydrogen Bromide Hydrogen chloride Hydrogen cyanide Hydrogen fluoride Hydrogen iodide Hydrogen selenide Hydrogen sulfide Iron pentacarbonyl Isobutyl chloroformate Isopropyl chloroformate Isobutyronitrile Jet Fuels (JP-5 and JP-8) Ketene Lewisite-1,-2, and -3 Malononitrile Magnesium aluminum phosphide Magnesium Phosphide Malathion Mercury Vapor Methacrylaldehyde Methacrylic acid Methacrylonitrile Methamidophos Methanol Methansulfonyl chloride Methomyl Methyldichloroarsine Methyl amine Methyl bromide Methyl chloride Methyl chloroformate Methyl chlorosilane Methyl dichlorosilane Methyl ethyl ketone Methyl hydrazine Methyl Iodide Methyl isocyanate Methyl isothiocyanate Methyl mercaptan Methyl methacrylate Methyl nonafluorobutyl ether Methyl nonafluoroisobutyl ether Methyl parathion Methyl-tertiary-butyl ether (MTBE) Methyl vinyl ketone Methylene chloride Methylvinyldichlorosilane Monochloroacetic acid Monocrotophos n-Butyl acrylate n-Butyl chloroformate n-Butyl isocyanate Nerve Agent GA (Tabun) Nickel carbonyl Nitric acid Nitric oxide Nitrogen dioxide Nitrogen Mustard-1 Nitrogen Mustard-2 Nitrogen Mustard-3 Nitrogen Tetroxide Nitrogen trifluoride N,N-Dimethylformamide Nonyltrichlorosilane Octadecyltrichlorosilane Octyltrichlorosilane Oleum Osmium tetroxide Otto Fuel Oxamyl Oxygen difluoride Parathion Pentaborane Peracetic Acid Perchloromethyl mercaptan Perchloryl fluoride Perfluoroisobutylene Phenol Phenyl chloroformate Phenyl dichloroarsine Phenyl isocyanate Phenyl mercaptan Phenyltrichlorosilane Phorate Phosgene Phosgene oxime Phosphamidon Phosphine Phosphorus oxychloride Phosphorus Trichloride Piperidine Potassium cyanide Potassium Phosphide Propane Propargyl alcohol Propionaldehyde Propionitrile Propyl chloroformate Propylene oxide Propylene Glycol Dinitrate Propyleneimine Propyltrichlorosilane Red Phosphorus sec-Butyl chloroformate Selenium hexafluoride Silane Silicon tetrafluoride Sodium cyanide Sodium Phosphide Stibine Strontium Phosphide Styrene Sulfur Dioxide Sulfur Mustard Sulfur trioxide Sulfuric acid Sulfuryl chloride Sulfuryl fluoride t-Octyl mercaptan Tear Gas Tellurium hexafluoride Tetrachloroethylene Tetrachlorosilane Tetrafluoroethylene Tetramethoxy silane Tetranitromethane Thionyl chloride Titanium tetrachloride Toluene trans-1,2-Dichloroethylene trans-Crotonaldehyde Trichloroethylene Trichloromethyl silane Trichlorosilane Trifluorochloroethylene Trimethoxysilane Trimethyl amine Trimethyl Phosphite Trimethylacetyl Chloride Trimethylchlorosilane Uranium hexafluoride Vinyl acetate Vinyl chloride Vinyltrichlorosilane Xylenes Zinc Phosphide
Compiled AEGL values
Final AEGLs contained in this database have been published by the National Research Council, National Academy of Sciences (NRC/NAS).
CAS NO.
Chemical Name
No CAS No. Available
Magnesium aluminum phosphide 56-23-5
Carbon tetrachloride 57-14-7
1,1- Dimethyl hydrazine 60-34-4
Methyl hydrazine 62-53-3
Aniline 67-66-3
Chloroform 68-12-2
N,N-Dimethylformamide 74-83-9
Methyl bromide 74-87-3
Methyl chloride 74-90-8
Hydrogen cyanide 74-93-1
Methyl mercaptan 74-98-6
Propane 75-01-4
Vinyl chloride 75-05-8
Acetonitrile 75-08-1
Ethyl mercaptan 75-15-0
Carbon disulfide 75-21-8
Ethylene oxide 75-44-5
Phosgene 75-54-7
Methyl dichlorosilane 75-55-8
Propyleneimine 75-56-9
Propylene oxide 75-77-4
Trimethylchlorosilane 75-78-5
Dichlorodimethylsilane 75-79-6
Trichloromethyl silane 75-86-5
Acetone cyanohydrin 75-94-5
Vinyltrichlorosilane 77-81-6
Nerve Agent GA (Tabun) 78-82-0
Isobutyronitrile 78-85-3
Methacrylaldehyde 78-93-3
Methyl ethyl ketone 78-95-5
Chloroacetone 79-11-8
Monochloroacetic acid 79-21-0
Peracetic Acid 80-10-4
Diphenyldichlorosilane 91-08-7
2,6-Toluenediisocyanate 95-63-6
1,2,4-Trimethylbenzene 96-64-0
Agent GD (Soman) 98-13-5
Phenyltrichlorosilane 100-47-0
Benzonitrile 103-71-9
Phenyl isocyanate 106-89-8
Epichlorohydrin 106-97-8
Butane 107-02-8
Acrolein 107-07-3
Ethylene chlorohydrin (2-Chloroethanol) 107-11-9
Allyl Amine 107-12-0
Propionitrile 107-13-1
Acrylonitrile 107-14-2
Chloroacetonitrile 107-15-3
Ethylene diamine 107-18-6
Allyl alcohol 107-19-7
Propargyl alcohol 107-20-0
Chloroacetaldehyde 107-30-2
Chloromethyl methyl ether 107-37-9
Allyltrichlorosilane 107-44-8
Agent GB (Sarin) 107-72-2
Amyltrichlorosilane 108-05-4
Vinyl acetate 108-67-8
1,3,5-Trimethylbenzene (Mesitylene) 108-88-3
Toluene 108-90-7
Chlorobenzene 108-91-8
Cyclohexylamine 108-95-2
Phenol 108-98-5
Phenyl Mercaptan 109-77-3
Malononitrile 109-90-0
Ethyl isocyanate 110-00-9
Furan 110-54-3
Hexane 110-89-4
Piperidine 111-36-4
n-Butyl isocyanate 112-04-9
Octadecyltrichlorosilane 115-21-9
Ethyltrichlorosilane 116-14-3
Tetrafluoroethylene 123-73-9
trans-Crotonaldehyde 124-63-0
Methansulfonyl chloride 124-70-9
Methylvinyldichlorosilane 126-98-7
Methacrylonitrile 141-57-1
Propyltrichlorosilane 141-59-3
t-Octyl mercaptan 143-33-9
Sodium cyanide 151-50-8
Potassium cyanide 151-56-4
Ethyleneimine 156-59-2
cis-1,2-Dichloroethylene 156-60-5
trans-1,2-Dichloroethylene 302-01-2
Hydrazine 329-99-7
Agent GF 353-50-4
Carbonyl fluoride 460-19-5
Cyanogen 463-51-4
Ketene 505-60-2
Sulfur Mustard 509-14-8
Tetranitromethane 526-73-8
1,2,3-Trimethylbenzene 540-73-8
1,2-Dimethyl hydrazine 541-25-3
Lewisite 1, including mixtures with Lewisite 2 (CAS No. 40334-69-8) and Lewisite 3 (CAS No. 40334-70-1) 542-88-1
Bis (chloromethyl) ether 556-61-6
Methyl isothiocyanate 584-84-9
2,4-Toluene Diisocyanate 592-01-8
Calcium cyanide 594-42-3
Perchloromethyl mercaptan 598-31-2
Bromoacetone 624-83-9
Methyl isocyanate 630-08-0
Carbon monoxide 674-82-8
Diketene 681-84-5
Tetramethoxy silane 684-16-2
Hexafluoroacetone 811-97-2
HFC 134A 928-65-4
Hexyltrichlorosilane 993-00-0
Methyl chlorosilane 1066-35-9
Dimethylchlorosilane 1305-99-3
Calcium phosphide 1314-84-7
Zinc phosphide 1330-20-7
Xylenes 1498-51-7
Ethylphosphorodichloridate 1558-25-4
Chloromethyltrichlorosilane 1717-00-6
HCFC 141b 1719-53-5
Diethyldichlorosilane 2487-90-3
Trimethoxysilane 2698-41-1
Tear Gas 3173-53-3
Cyclohexyl isocyanate 3282-30-2
Trimethyl acetyl chloride 4109-96-0
Dichlorosilane 4170-30-3
cis-Crotonaldehyde 4484-72-4
Dodecyltrichlorosilane 5283-66-9
Octyltrichlorosilane 5283-67-0
Nonyltrichlorosilane 6423-43-4
Propylene Glycol Dinitrate 6581-06-2
BZ 7446-09-5
Sulfur Dioxide 7521-80-4
Butyltrichlorosilane 7616-94-6
Perchloryl fluoride 7637-07-2
Boron trifluoride 7647-01-0
Hydrogen chloride 7664-39-3
Hydrogen fluoride 7664-41-7
Ammonia 7697-37-2
Nitric Acid 7719-12-2
Phosphorus Trichloride 7726-95-6
Bromine 7782-41-4
Fluorine 7782-50-5
Chlorine 7783-06-4
Hydrogen sulfide 7783-07-5
Hydrogen selenide 7783-41-7
Oxygen difluoride 7783-80-4
Tellurium hexafluoride 7783-81-5
Uranium hexafluoride 7784-42-1
Arsine 7787-71-5
Bromine trifluoride 7789-30-2
Bromine pentafluoride 7790-91-2
Chlorine trifluoride 7791-25-5
Sulfuryl chloride 7803-51-2
Phosphine 8008-20-6
Jet Fuel (JP-5) 10025-78-2
Trichlorosilane 10025-87-3
Phosphorus oxychloride 10026-04-7
Tetrachlorosilane 10035-10-6
Hydrogen Bromide 10049-04-4
Chlorine dioxide 10102-43-9
Nitric oxide 10102-44-0
Nitrogen dioxide 10294-33-4
Boron tribromide 10544-72-6
Nitrogen tetroxide 12057-74-8
Magnesium Phosphide 12058-85-4
Sodium Phosphide 12504-13-1
Strontium Phosphide 13463-39-3
Nickel carbonyl 13463-40-6
Iron pentacarbonyl 13637-63-3
Chlorine pentafluoride 13863-41-7
Bromine chloride 19287-45-7
Diborane 19624-22-7
Pentaborane 20770-41-6
Potassium Phosphide 20859-73-8
Aluminum phosphide 27137-85-5
Dichlorophenyltrichlorosilane 50782-69-9
Agent VX 70892-10-3
Jet Fuel (JP-8) 106602-80-6
Otto Fuel (mainly Propylene Glycol Dinitrate 6423-43-4)163702-07-6 and 163702-08-7
(HFE-7100) Methyl nonafluorobutyl ether (40%) and Methyl nonafluoroisobutyl ether (60%)
Interim AEGLs are established following review and consideration by the National Advisory Committee for AEGLs (NAC/AEGL) of public comments on Proposed AEGLs. Interim AEGLs are available for use by organizations while awaiting NRC/NAS peer review and publication of Final AEGLs. Changes to interim values and Technical Support Documents may occur prior to publication of Final AEGL values. In some cases, revised interim values may be posted on this website, but the revised Interim Technical Support Document for the chemical may be subject to change. (Further information is available through AEGL Process ).
Proposed AEGLs are published in the Federal Register for public comment following review and concurrence of Draft AEGLs by the NAC/AEGL Committee. The comment period is 30 days from the date Proposed AEGLs are published in the Federal Register. (Further information is available through AEGL Process).
Holding Status AEGLs have been reviewed by the NAC/AEGL Committee and are on hold due to insufficient data to develop AEGL values.
CAS NO.
Chemical Name
62-74-7
Sodium fluoroacetate
62-74-8
Fluoroacetate salts
75-36-5
Acetyl Chloride
75-74-1
Tetramethyl lead
76-02-8
Trichloroacetyl Chloride
77-10-0
Phencyclidine
80-12-6
Tetramethylene disulfotetramine
80-63-7
Methyl 2-chloroacrylate
97-02-9
2,4-Dinitroaniline
107-49-3
Tetraethyl pyrophosphate
110-78-1
n-Propyl isocyanate
144-49-0
Monofluoroacetic acid
151-38-2
Methoxyethyl mercuric acetate
371-62-0
Ethylene fluorohydrin
453-18-9
Methyl fluoroacetate
463-71-8
Thiophosgene
503-38-8
Diphosgene
506-77-4
Cyanogen chloride
556-64-9
Methyl thiocyanate
561-27-3
Diacetyl morphine
814-68-6
Acrylyl chloride
950-35-6
Methyl paroxon
993-43-1
Ethyl phosphonothioic dichloride
1303-28-2
Arsenic pentoxide
1498-40-4
Ethyl phosphonous dichloride
1609-86-5
t-butyl isocyanate
1737-93-5
3,5-dichloro-2,4,6-trifluoropyridine
1795-48-8
Isopropyl isocyanate
1873-29-6
Isobutyl isocyanate
2696-92-6
Nitrosyl chloride
354-32-5
Trifluoroacetyl chloride
4300-97-4
Chloropivaloyl chloride
4685-14-7
Paraquat
6427-21-0
Methoxymethyl isocyanate
7775-14-6
Sodium dithionite
7783-60-0
Sulfur tetrafluoride
7783-82-6
Tungsten hexafluoride
7784-34-1
Arsenic trichloride
7786-34-7
Mevinphos
7789-21-2
Fluorosulfonic acid
7803-49-08
Hydroxylamine
7803-54-5
Magnesium diamide
9009-86-3
Ricin
10294-34-5
Boron Trichloride
10544-73-7
Nitrogen trioxide
10545-99-0
Sulfur dichloride
