Occupational Health Guidelines for Chemical Hazards
January 1981
DHHS (NIOSH) Publication Number 81-123
Occupational Health Guidelines for Chemical Hazards summarizes information on permissible exposure limits, chemical and physical properties, and health hazards. It provides recommendations for medical surveillance, respiratory protection, and personal protection and sanitation practices for specific chemicals that have Federal occupational safety and health regulations. These recommendations reflect good industrial hygiene and medical surveillance practices, and their implementation will assist development and maintenance of an effective occupational health program.
Guidelines for Chemical Hazards
| Substance | CAS # | Original Guideline | Revised Guideline |
|---|---|---|---|
| Acetaldehyde | 75-07-0 | 0001.pdf pdf icon | 0001-rev.pdf pdf icon |
| Acetic acid | 64-19-7 | 0002.pdf pdf icon | 0002-rev.pdf pdf icon |
| Acetic anhydride | 108-24-7 | 0003.pdf pdf icon | 0003-rev.pdf pdf icon |
| Acetone | 67-64-1 | 0004.pdf pdf icon | No Revision |
| Acetonitrile | 75-05-8 | 0006.pdf pdf icon | 0006-rev.pdf pdf icon |
| 2-Acetylaminofluorene | 53-96-3 | 0007.pdf pdf icon | No Revision |
| Acetylene tetrabromide | 79-27-6 | 0009.pdf pdf icon | 0009-rev.pdf pdf icon |
| Acetylsalicyclic acid | 50-78-2 | 0010.pdf pdf icon | No Revision |
| Acrolein | 107-02-8 | 0011.pdf pdf icon | 0011-rev.pdf pdf icon |
| Acrylamide | 79-06-1 | 0012.pdf pdf icon | 0012-rev.pdf pdf icon |
| Acrylic acid | 79-10-7 | 0013.pdf pdf icon | No Revision |
| Acrylonitrile | 107-13-1 | 0014.pdf pdf icon | No Revision |
| Aldrin | 309-00-2 | 0016.pdf pdf icon | No Revision |
| Allyl alcohol | 107-18-6 | 0017.pdf pdf icon | 0017-rev.pdf pdf icon |
| Allyl chloride | 107-05-1 | 0018.pdf pdf icon | 0018-rev.pdf pdf icon |
| Allyl glycidyl ether | 106-92-3 | 0019.pdf pdf icon | No Revision |
| Allyl propyl disulfide | 2179-59-1 | 0020.pdf pdf icon | No Revision |
| 4-Aminodiphenyl | 92-67-1 | 0025.pdf pdf icon | No Revision |
| 2-Aminopyridine | 504-29-0 | 0026.pdf pdf icon | 0026-rev.pdf pdf icon |
| Amitrole | 61-82-5 | 0027.pdf pdf icon | No Revision |
| Ammonia | 7664-41-7 | 0028.pdf pdf icon | 0028-rev.pdf pdf icon |
| Ammonium chloride fume | 12125-02-9 | 0029.pdf pdf icon | No Revision |
| Ammonium sulfamate | 7773-06-0 | 0030.pdf pdf icon | 0030-rev.pdf pdf icon |
| n-Amyl acetate | 628-63-7 | 0031.pdf pdf icon | 0031-rev.pdf pdf icon |
| sec-Amyl acetate | 626-38-0 | 0032.pdf pdf icon | 0032-rev.pdf pdf icon |
| Aniline (and homologs) | 62-53-3 | 0033.pdf pdf icon | 0033-rev.pdf pdf icon |
| o-Anisidine or p-Anisidine | 90-04-0 | 0034.pdf pdf icon | 0034-rev.pdf pdf icon |
| Antimony | 7440-36-0 | 0036.pdf pdf icon | No Revision |
| ANTU | 86-88-4 | 0037.pdf pdf icon | 0037-rev.pdf pdf icon |
| Arsenic (inorganic compounds, as As) | 7440-38-2 | 0038.pdf pdf icon | No Revision |
| Arsine | 7784-42-1 | 0040.pdf pdf icon | No Revision |
| Asbestos | 1332-21-4 | 0041.pdf pdf icon | No Revision |
| Atrazine | 1912-24-9 | 0043.pdf pdf icon | No Revision |
| Azinphos-methyl | 86-50-0 | 0044.pdf pdf icon | 0044-rev.pdf pdf icon |
| Barium chloride (as Ba) | 10361-37-2 | 0045.pdf pdf icon | No Revision |
| Barium sulfate | 7727-43-7 | 0047.pdf pdf icon | No Revision |
| Benomyl | 17804-35-2 | 0048.pdf pdf icon | No Revision |
| Benzene | 71-43-2 | 0049.pdf pdf icon | No Revision |
| Benzidine | 92-87-5 | 0051.pdf pdf icon | 0051-rev.pdf pdf icon |
| Benzoyl peroxide | 94-36-0 | 0052.pdf pdf icon | 0052-rev.pdf pdf icon |
| Benzyl chloride | 100-44-7 | 0053.pdf pdf icon | No Revision |
| Beryllium & beryllium compounds (as Be) | 7440-41-7 | 0054.pdf pdf icon | No Revision |
| Bismuth telluride, doped with Selenium sulfide | 0055.pdf pdf icon | No Revision | |
| Bismuth telluride, undoped | 1304-82-1 | 0056.pdf pdf icon | No Revision |
| Boron oxide | 1303-86-2 | 0060.pdf pdf icon | 0060-rev.pdf pdf icon |
| Boron tribromide | 10294-33-4 | 0061.pdf pdf icon | No Revision |
| Boron trifluoride | 7637-07-2 | 0062.pdf pdf icon | 0062-rev.pdf pdf icon |
| Bromacil | 314-40-9 | 0063.pdf pdf icon | No Revision |
| Bromine | 7726-95-6 | 0064.pdf pdf icon | 0064-rev.pdf pdf icon |
| Bromine pentafluoride | 7789-30-2 | 0065.pdf pdf icon | No Revision |
| Bromoform | 75-25-2 | 0066.pdf pdf icon | 0066-rev.pdf pdf icon |
| 1,3-Butadiene | 106-99-0 | 0067.pdf pdf icon | 0067-rev.pdf pdf icon |
| n-Butane | 106-97-8 | 0068.pdf pdf icon | No Revision |
| 2-Butanone | 78-93-3 | 0069.pdf pdf icon | No Revision |
| 2-Butoxyethanol | 111-76-2 | 0070.pdf pdf icon | 0070-rev.pdf pdf icon |
| n-Butyl acetate | 123-86-4 | 0072.pdf pdf icon | 0072-rev.pdf pdf icon |
| sec-Butyl acetate | 105-46-4 | 0073.pdf pdf icon | 0073-rev.pdf pdf icon |
| tert-Butyl acetate | 540-88-5 | 0074.pdf pdf icon | 0074-rev.pdf pdf icon |
| Butyl acrylate | 141-32-2 | 0075.pdf pdf icon | No Revision |
| n-Butyl alcohol | 71-36-3 | 0076.pdf pdf icon | 0076-rev.pdf pdf icon |
| sec-Butyl alcohol | 78-92-2 | 0077.pdf pdf icon | 0077-rev.pdf pdf icon |
| tert-Butyl alcohol | 75-65-0 | 0078.pdf pdf icon | 0078-rev.pdf pdf icon |
| n-Butylamine | 109-73-9 | 0079.pdf pdf icon | 0079-rev.pdf pdf icon |
| tert-Butyl chromate | 1189-85-1 | 0080.pdf pdf icon | 0080-rev.pdf pdf icon |
| n-Butyl glycidyl ether | 2426-08-6 | 0081.pdf pdf icon | No Revision |
| n-Butyl lactate | 138-22-7 | 0082.pdf pdf icon | No Revision |
| n-Butyl mercaptan | 109-79-5 | 0083.pdf pdf icon | No Revision |
| o-sec-Butylphenol | 89-72-5 | 0084.pdf pdf icon | No Revision |
| p-tert-Butyltoluene | 98-51-1 | 0085.pdf pdf icon | 0085-rev.pdf pdf icon |
| Cadmium dust (as Cd) | 7440-43-9 | 0087.pdf pdf icon | No Revision |
| Cadmium fume (as Cd) | 1306-19-0 | 0088.pdf pdf icon | No Revision |
| Calcium carbonate | 1317-65-3 | 0090.pdf pdf icon | No Revision |
| Calcium cyanamide | 156-62-7 | 0091.pdf pdf icon | No Revision |
| Calcium hydroxide | 1305-62-0 | 0092.pdf pdf icon | No Revision |
| Calcium oxide | 1305-78-8 | 0093.pdf pdf icon | 0093-rev.pdf pdf icon |
| Calcium silicate | 1344-95-2 | 0094.pdf pdf icon | No Revision |
| Calcium sulfate | 7778-18-9 | 0095.pdf pdf icon | No Revision |
| Camphor (synthetic) | 76-22-2 | 0096.pdf pdf icon | 0096-rev.pdf pdf icon |
| Caprolactam | 105-60-2 | 0097.pdf pdf icon | No Revision |
| Captafol | 2425-06-1 | 0098.pdf pdf icon | No Revision |
| Captan | 133-06-2 | 0099.pdf pdf icon | No Revision |
| Carbaryl | 63-25-2 | 0100.pdf pdf icon | 0100-rev.pdf pdf icon |
| Carbofuran | 1563-66-2 | 0101.pdf pdf icon | No Revision |
| Carbon black | 1333-86-4 | 0102.pdf pdf icon | No Revision |
| Carbon dioxide | 124-38-9 | 0103.pdf pdf icon | No Revision |
| Carbon disulfide | 75-15-0 | 0104.pdf pdf icon | No Revision |
| Carbon monoxide | 630-08-0 | 0105.pdf pdf icon | No Revision |
| Carbon tetrabromide | 558-13-4 | 0106.pdf pdf icon | No Revision |
| Carbon tetrachloride | 56-23-5 | 0107.pdf pdf icon | 0107-rev.pdf pdf icon |
| Carbonyl fluoride | 353-50-4 | 0108.pdf pdf icon | No Revision |
| Catechol | 120-80-9 | 0109.pdf pdf icon | No Revision |
| Cellulose | 9004-34-6 | 0110.pdf pdf icon | No Revision |
| Cesium hydroxide | 21351-79-1 | 0111.pdf pdf icon | No Revision |
| Chlordane | 57-74-9 | 0112.pdf pdf icon | No Revision |
| Chlorinated camphene | 8001-35-2 | 0113.pdf pdf icon | No Revision |
| Chlorinated diphenyl oxide | 0114.pdf pdf icon | No Revision | |
| Chlorine | 7782-50-5 | 0115.pdf pdf icon | No Revision |
| Chlorine dioxide | 10049-04-4 | 0116.pdf pdf icon | No Revision |
| Chlorine trifluoride | 7790-91-2 | 0117.pdf pdf icon | No Revision |
| Chloroacetaldehyde | 107-20-0 | 0118.pdf pdf icon | No Revision |
| alpha-Chloroacetophenone | 532-27-4 | 0119.pdf pdf icon | No Revision |
| Chloroacetyl chloride | 79-04-9 | 0120.pdf pdf icon | No Revision |
| Chlorobenzene | 108-90-7 | 0121.pdf pdf icon | 0121-rev.pdf pdf icon |
| o-Chlorobenzylidene malononitrile | 2698-41-1 | 0122.pdf pdf icon | 0122-rev.pdf pdf icon |
| Chlorobromomethane | 74-97-5 | 0123.pdf pdf icon | No Revision |
| Chlorodifluoromethane | 75-45-6 | 0124.pdf pdf icon | No Revision |
| Chlorodiphenyl (42% chlorine) | 53469-21-9 | 0125.pdf pdf icon | No Revision |
| Chlorodiphenyl (54% chlorine) | 11097-69-1 | 0126.pdf pdf icon | No Revision |
| Chloroform | 67-66-3 | 0127.pdf pdf icon | No Revision |
| bis-Chloromethyl ether | 542-88-1 | 0128.pdf pdf icon | No Revision |
| Chloromethyl methyl ether | 107-30-2 | 0129.pdf pdf icon | No Revision |
| 1-Chloro-1-nitropropane | 600-25-9 | 0130.pdf pdf icon | No Revision |
| Chloropentafluoroethane | 76-15-3 | 0131.pdf pdf icon | No Revision |
| Chloropicrin | 76-06-2 | 0132.pdf pdf icon | 0132-rev.pdf pdf icon |
| beta-Chloroprene | 126-99-8 | 0133.pdf pdf icon | 0133-rev.pdf pdf icon |
| o-Chlorostyrene | 2039-87-4 | 0134.pdf pdf icon | No Revision |
| o-Chlorotoluene | 95-49-8 | 0135.pdf pdf icon | No Revision |
| 2-Chloro-6-trichloromethyl pyridine | 1929-82-4 | 0136.pdf pdf icon | No Revision |
| Chlorpyrifos | 2921-88-2 | 0137.pdf pdf icon | No Revision |
| Chromic acid and chromates | 1333-82-0 | 0138.pdf pdf icon | No Revision |
| Chromium(III) compounds (as Cr) | 0140.pdf pdf icon | No Revision | |
| Chromium metal | 7440-47-3 | 0141.pdf pdf icon | No Revision |
| Clopidol | 2971-90-6 | 0143.pdf pdf icon | No Revision |
| Coal tar pitch volatiles | 65996-93-2 | 0145.pdf pdf icon | No Revision |
| Cobalt metal dust and fume (as Co) | 7440-48-4 | 0146.pdf pdf icon | No Revision |
| Cobalt carbonyl (as Co) | 10210-68-1 | 0147.pdf pdf icon | No Revision |
| Cobalt hydrocarbonyl (as Co) | 16842-03-8 | 0148.pdf pdf icon | No Revision |
| Copper (dusts and mists, as Cu) | 7440-50-8 | 0150.pdf pdf icon | No Revision |
| Copper fume (as Cu) | 1317-38-0 | 0151.pdf pdf icon | No Revision |
| Cotton dust (raw) | GN22 | 0152.pdf pdf icon | No Revision |
| Crag® herbicide | 136-78-7 | 0153.pdf pdf icon | No Revision |
| o-Cresol | 95-48-7 | 0154.pdf pdf icon | No Revision |
| m-Cresol | 108-39-4 | 0155.pdf pdf icon | No Revision |
| p-Cresol | 106-44-5 | 0156.pdf pdf icon | No Revision |
| Crotonaldehyde | 4170-30-3 | 0157.pdf pdf icon | No Revision |
| Crufomate | 299-86-5 | 0158.pdf pdf icon | No Revision |
| Cumene | 98-82-8 | 0159.pdf pdf icon | No Revision |
| Cyanogen | 460-19-5 | 0161.pdf pdf icon | No Revision |
| Cyanogen chloride | 506-77-4 | 0162.pdf pdf icon | No Revision |
| Cyclohexane | 110-82-7 | 0163.pdf pdf icon | No Revision |
| Cyclohexanol | 108-93-0 | 0165.pdf pdf icon | No Revision |
| Cyclohexanone | 108-94-1 | 0166.pdf pdf icon | No Revision |
| Cyclohexene | 110-83-8 | 0167.pdf pdf icon | No Revision |
| Cyclohexylamine | 108-91-8 | 0168.pdf pdf icon | No Revision |
| Cyclonite | 121-82-4 | 0169.pdf pdf icon | No Revision |
| Cyclopentadiene | 542-92-7 | 0170.pdf pdf icon | No Revision |
| Cyclopentane | 287-92-3 | 0171.pdf pdf icon | No Revision |
| 2,4-D | 94-75-7 | 0173.pdf pdf icon | No Revision |
| DDT | 50-29-3 | 0174.pdf pdf icon | No Revision |
| Decaborane | 17702-41-9 | 0175.pdf pdf icon | 0175-rev.pdf pdf icon |
| Demeton | 8065-48-3 | 0177.pdf pdf icon | No Revision |
| Diacetone alcohol | 123-42-2 | 0178.pdf pdf icon | No Revision |
| Diazinon | 333-41-5 | 0181.pdf pdf icon | No Revision |
| Diazomethane | 334-88-3 | 0182.pdf pdf icon | No Revision |
| Diborane | 19287-45-7 | 0183.pdf pdf icon | No Revision |
| 1,2-Dibromo-3-chloropropane | 96-12-8 | 0184.pdf pdf icon | No Revision |
| 2-N-Dibutylaminoethanol | 102-81-8 | 0185.pdf pdf icon | No Revision |
| Dibutyl phosphate | 107-66-4 | 0186.pdf pdf icon | No Revision |
| Dibutyl phthalate | 84-74-2 | 0187.pdf pdf icon | No Revision |
| Dichloroacetylene | 7572-29-4 | 0188.pdf pdf icon | No Revision |
| o-Dichlorobenzene | 95-50-1 | 0189.pdf pdf icon | No Revision |
| p-Dichlorobenzene | 106-46-7 | 0190.pdf pdf icon | No Revision |
| 3,3′-Dichlorobenzidine (and its salts) | 91-94-1 | 0191.pdf pdf icon | No Revision |
| Dichlorodifluoromethane | 75-71-8 | 0192.pdf pdf icon | No Revision |
| 1,3-Dichloro-5,5-dimethylhydantoin | 118-52-5 | 0193.pdf pdf icon | No Revision |
| 1,1-Dichloroethane | 75-34-3 | 0194.pdf pdf icon | No Revision |
| 1,2-Dichloroethylene | 540-59-0 | 0195.pdf pdf icon | No Revision |
| Dichloroethyl ether | 111-44-4 | 0196.pdf pdf icon | No Revision |
| Dichloromonofluoromethane | 75-43-4 | 0197.pdf pdf icon | No Revision |
| 1,1-Dichloro-1-nitroethane | 594-72-9 | 0198.pdf pdf icon | No Revision |
| 1,3-Dichloropropene | 542-75-6 | 0199.pdf pdf icon | No Revision |
| 2,2-Dichloropropionic acid | 75-99-0 | 0200.pdf pdf icon | No Revision |
| Dichlorotetrafluoroethane | 76-14-2 | 0201.pdf pdf icon | No Revision |
| Dichlorvos | 62-73-7 | 0202.pdf pdf icon | No Revision |
| Dicrotophos | 141-66-2 | 0203.pdf pdf icon | No Revision |
| Dicyclopentadiene | 77-73-6 | 0204.pdf pdf icon | No Revision |
| Dicyclopentadienyl iron | 102-54-5 | 0205.pdf pdf icon | No Revision |
| Dieldrin | 60-57-1 | 0206.pdf pdf icon | No Revision |
| Diethanolamine | 111-42-2 | 0208.pdf pdf icon | No Revision |
| Diethylamine | 109-89-7 | 0209.pdf pdf icon | No Revision |
| 2-Diethylaminoethanol | 100-37-8 | 0210.pdf pdf icon | No Revision |
| Diethylenetriamine | 111-40-0 | 0211.pdf pdf icon | No Revision |
| Diethyl phthalate | 84-66-2 | 0213.pdf pdf icon | No Revision |
| Difluorodibromomethane | 75-61-6 | 0214.pdf pdf icon | No Revision |
| Diglycidyl ether | 2238-07-5 | 0215.pdf pdf icon | No Revision |
| Diisobutyl ketone | 108-83-8 | 0216.pdf pdf icon | No Revision |
| Diisopropylamine | 108-18-9 | 0217.pdf pdf icon | No Revision |
| Dimethyl acetamide | 127-19-5 | 0218.pdf pdf icon | No Revision |
| Dimethylamine | 124-40-3 | 0219.pdf pdf icon | No Revision |
| 4-Dimethylaminoazobenzene | 60-11-7 | 0220.pdf pdf icon | No Revision |
| N,N-Dimethylaniline | 121-69-7 | 0223.pdf pdf icon | No Revision |
| Dimethyl-1,2-dibromo-2,2-dichlorethyl phosphate | 300-76-5 | 0225.pdf pdf icon | No Revision |
| Dimethylformamide | 68-12-2 | 0226.pdf pdf icon | No Revision |
| 1,1-Dimethylhydrazine | 57-14-7 | 0227.pdf pdf icon | No Revision |
| Dimethylphthalate | 131-11-3 | 0228.pdf pdf icon | No Revision |
| Dimethyl sulfate | 77-78-1 | 0229.pdf pdf icon | No Revision |
| Dinitolmide | 148-01-6 | 0230.pdf pdf icon | No Revision |
| o-Dinitrobenzene | 528-29-0 | 0231.pdf pdf icon | No Revision |
| m-Dinitrobenzene | 99-65-0 | 0231.pdf pdf icon | No Revision |
| p-Dinitrobenzene | 100-25-4 | 0231.pdf pdf icon | No Revision |
| Dinitro-o-cresol | 534-52-1 | 0234.pdf pdf icon | No Revision |
| Dinitrotoluene | 25321-14-6 | 0235.pdf pdf icon | No Revision |
| Di-sec octyl phthalate | 117-81-7 | 0236.pdf pdf icon | No Revision |
| Dioxane | 123-91-1 | 0237.pdf pdf icon | No Revision |
| Diphenyl | 92-52-4 | 0239.pdf pdf icon | No Revision |
| Dipropylene glycol methyl ether | 34590-94-8 | 0241.pdf pdf icon | No Revision |
| Dipropyl ketone | 123-19-3 | 0242.pdf pdf icon | No Revision |
| Disulfiram | 97-77-8 | 0244.pdf pdf icon | No Revision |
| Diuron | 330-54-1 | 0247.pdf pdf icon | No Revision |
| Endosulfan | 115-29-7 | 0251.pdf pdf icon | No Revision |
| Endrin | 72-20-8 | 0252.pdf pdf icon | No Revision |
| Epichlorohydrin | 106-89-8 | 0254.pdf pdf icon | No Revision |
| EPN | 2104-64-5 | 0255.pdf pdf icon | No Revision |
| Ethanolamine | 141-43-5 | 0256.pdf pdf icon | No Revision |
| Ethion | 563-12-2 | 0257.pdf pdf icon | No Revision |
| 2-Ethoxyethanol | 110-80-5 | 0258.pdf pdf icon | No Revision |
| 2-Ethoxyethyl acetate | 111-15-9 | 0259.pdf pdf icon | No Revision |
| Ethyl acetate | 141-78-6 | 0260.pdf pdf icon | No Revision |
| Ethyl acrylate | 140-88-5 | 0261.pdf pdf icon | No Revision |
| Ethylamine | 75-04-7 | 0263.pdf pdf icon | No Revision |
| Ethyl benzene | 100-41-4 | 0264.pdf pdf icon | No Revision |
| Ethyl bromide | 74-96-4 | 0265.pdf pdf icon | No Revision |
| Ethyl butyl ketone | 106-35-4 | 0266.pdf pdf icon | No Revision |
| Ethyl chloride | 75-00-3 | 0267.pdf pdf icon | No Revision |
| Ethylene chlorohydrin | 107-07-3 | 0268.pdf pdf icon | No Revision |
| Ethylenediamine | 107-15-3 | 0269.pdf pdf icon | No Revision |
| Ethylene dibromide | 106-93-4 | 0270.pdf pdf icon | No Revision |
| Ethylene dichloride | 107-06-2 | 0271.pdf pdf icon | No Revision |
| Ethylene glycol | 107-21-1 | 0272.pdf pdf icon | No Revision |
| Ethylene glycol dinitrate | 628-96-6 | 0273.pdf pdf icon | No Revision |
| Ethyleneimine | 151-56-4 | 0274.pdf pdf icon | No Revision |
| Ethylene oxide | 75-21-8 | 0275.pdf pdf icon | No Revision |
| Ethyl ether | 60-29-7 | 0277.pdf pdf icon | No Revision |
| Ethyl formate | 109-94-4 | 0278.pdf pdf icon | No Revision |
| Ethylidene norbornene | 16219-75-3 | 0279.pdf pdf icon | No Revision |
| Ethyl mercaptan | 75-08-1 | 0280.pdf pdf icon | No Revision |
| N-Ethylmorpholine | 100-74-3 | 0281.pdf pdf icon | No Revision |
| Ethyl silicate | 78-10-4 | 0282.pdf pdf icon | No Revision |
| Ferbam | 14484-64-1 | 0286.pdf pdf icon | No Revision |
| Ferrovanadium dust | 12604-58-9 | 0287.pdf pdf icon | No Revision |
| Fluorine | 7782-41-4 | 0289.pdf pdf icon | No Revision |
| Fluorotrichloromethane | 75-69-4 | 0290.pdf pdf icon | No Revision |
| Formaldehyde | 50-00-0 | 0293.pdf pdf icon | No Revision |
| Formic acid | 64-18-6 | 0296.pdf pdf icon | No Revision |
| Furfural | 98-01-1 | 0297.pdf pdf icon | No Revision |
| Furfuryl alcohol | 98-00-0 | 0298.pdf pdf icon | No Revision |
| Glycidol | 556-52-5 | 0303.pdf pdf icon | No Revision |
| Graphite (natural) | 7782-42-5 | 0306.pdf pdf icon | No Revision |
| Hafnium | 7440-58-6 | 0309.pdf pdf icon | No Revision |
| Heptachlor | 76-44-8 | 0311.pdf pdf icon | No Revision |
| n-Heptane | 142-82-5 | 0312.pdf pdf icon | No Revision |
| Hexachloroethane | 67-72-1 | 0316.pdf pdf icon | No Revision |
| Hexachloronaphthalene | 1335-87-1 > | 0317.pdf pdf icon | No Revision |
| n-Hexane | 110-54-3 | 0322.pdf pdf icon | No Revision |
| 2-Hexanone | 591-78-6 | 0325.pdf pdf icon | No Revision |
| Hexone | 108-10-1 | 0326.pdf pdf icon | No Revision |
| sec-Hexyl acetate | 108-84-9 | 0327.pdf pdf icon | No Revision |
| Hydrazine | 302-01-2 | 0329.pdf pdf icon | No Revision |
| Hydrogen bromide | 10035-10-6 | 0331.pdf pdf icon | No Revision |
| Hydrogen chloride | 7647-01-0 | 0332.pdf pdf icon | No Revision |
| Hydrogen cyanide | 74-90-8 | 0333.pdf pdf icon | No Revision |
| Hydrogen fluoride (as F) | 7664-39-3 | 0334.pdf pdf icon | No Revision |
| Hydrogen peroxide | 7722-84-1 | 0335.pdf pdf icon | No Revision |
| Hydrogen selenide | 7783-07-5 | 0336.pdf pdf icon | No Revision |
| Hydrogen sulfide | 7783-06-4 | 0337.pdf pdf icon | No Revision |
| Hydroquinone | 123-31-9 | 0338.pdf pdf icon | No Revision |
| Iodine | 7553-56-2 | 0342.pdf pdf icon | No Revision |
| Iron oxide dust and fume (as Fe) | 1309-37-1 | 0344.pdf pdf icon | No Revision |
| Isoamyl acetate | 123-92-2 | 0347.pdf pdf icon | No Revision |
| Isoamyl alcohol (primary) | 123-51-3 | 0348.pdf pdf icon | No Revision |
| Isoamyl alcohol (secondary) | 6032-29-7 | 0349.pdf pdf icon | No Revision |
| Isobutyl acetate | 110-19-0 | 0351.pdf pdf icon | No Revision |
| Isobutyl alcohol | 78-83-1 | 0352.pdf pdf icon | No Revision |
| Isophorone | 78-59-1 | 0355.pdf pdf icon | No Revision |
| Isopropyl acetate | 108-21-4 | 0358.pdf pdf icon | No Revision |
| Isopropyl alcohol | 67-63-0 | 0359.pdf pdf icon | No Revision |
| Isopropylamine | 75-31-0 | 0360.pdf pdf icon | No Revision |
| Isopropyl ether | 108-20-3 | 0362.pdf pdf icon | No Revision |
| Isopropyl glycidyl ether | 4016-14-2 | 0363.pdf pdf icon | No Revision |
| Ketene | 463-51-4 | 0367.pdf pdf icon | No Revision |
| Lead | 7439-92-1 | 0368.pdf pdf icon | No Revision |
| Lindane | 58-89-9 | 0370.pdf pdf icon | No Revision |
| Lithium hydride | 7580-67-8 | 0371.pdf pdf icon | No Revision |
| L.P.G. | 68476-85-7 | 0372.pdf pdf icon | No Revision |
| Magnesium oxide fume | 1309-48-4 | 0374.pdf pdf icon | No Revision |
| Malathion | 121-75-5 | 0375.pdf pdf icon | No Revision |
| Maleic anhydride | 108-31-6 | 0376.pdf pdf icon | No Revision |
| Manganese compounds and fume (as Mn) | 7439-96-5 | 0379.pdf pdf icon | No Revision |
| Mercury compounds [except (organo) alkyl | 7439-97-6 | 0383.pdf pdf icon | No Revision |
| Mercury (organo) alkyl compounds (as Hg) | 0384.pdf pdf icon | No Revision | |
| Mesityl oxide | 141-79-7 | 0385.pdf pdf icon | No Revision |
| Methoxychlor | 72-43-5 | 0388.pdf pdf icon | No Revision |
| Methyl acetate | 79-20-9 | 0391.pdf pdf icon | No Revision |
| Methyl acetylene | 74-99-7 | 0392.pdf pdf icon | No Revision |
| Methyl acetylene-propadiene mixture | 59355-75-8 | 0393.pdf pdf icon | No Revision |
| Methyl acrylate | 96-33-3 | 0394.pdf pdf icon | No Revision |
| Methylal | 109-87-5 | 0396.pdf pdf icon | No Revision |
| Methyl alcohol | 67-56-1 | 0397.pdf pdf icon | No Revision |
| Methylamine | 74-89-5 | 0398.pdf pdf icon | No Revision |
| Methyl bromide | 74-83-9 | 0400.pdf pdf icon | No Revision |
| Methyl Cellosolve® | 109-86-4 | 0401.pdf pdf icon | No Revision |
| Methyl Cellosolve® acetate | 110-49-6 | 0402.pdf pdf icon | No Revision |
| Methyl chloride | 74-87-3 | 0403.pdf pdf icon | No Revision |
| Methyl chloroform | 71-55-6 | 0404.pdf pdf icon | No Revision |
| Methylcyclohexane | 108-87-2 | 0406.pdf pdf icon | No Revision |
| Methylcyclohexanol | 25639-42-3 | 0407.pdf pdf icon | No Revision |
| o-Methylcyclohexanone | 583-60-8 | 0408.pdf pdf icon | No Revision |
| Methylene bisphenyl isocyanate | 101-68-8 | 0413.pdf pdf icon | No Revision |
| Methylene chloride | 75-09-2 | 0414.pdf pdf icon | No Revision |
| Methyl formate | 107-31-3 | 0417.pdf pdf icon | No Revision |
| 5-Methyl-3-heptanone | 541-85-5 | 0418.pdf pdf icon | No Revision |
| Methyl hydrazine | 60-34-4 | 0419.pdf pdf icon | No Revision |
| Methyl iodide | 74-88-4 | 0420.pdf pdf icon | No Revision |
| Methyl isobutyl carbinol | 108-11-2 | 0422.pdf pdf icon | No Revision |
| Methyl isocyanate | 624-83-9 | 0423.pdf pdf icon | No Revision |
| Methyl mercaptan | 74-93-1 | 0425.pdf pdf icon | No Revision |
| Methyl methacrylate | 80-62-6 | 0426.pdf pdf icon | No Revision |
| alpha-Methyl styrene | 98-83-9 | 0429.pdf pdf icon | No Revision |
| Mica (containing less than 1% quartz) | 12001-26-2 | 0431.pdf pdf icon | No Revision |
| Molybdenum | 7439-98-7 | 0433.pdf pdf icon | No Revision |
| Molybdenum (soluble compounds, as Mo) | 0434.pdf pdf icon | No Revision | |
| Monomethyl aniline | 100-61-8 | 0436.pdf pdf icon | No Revision |
| Morpholine | 110-91-8 | 0437.pdf pdf icon | No Revision |
| Naphtha (coal tar) | 8030-30-6 | 0438.pdf pdf icon | No Revision |
| Naphthalene | 91-20-3 | 0439.pdf pdf icon | No Revision |
| alpha-Naphthylamine | 134-32-7 | 0441.pdf pdf icon | No Revision |
| beta-Naphthylamine | 91-59-8 | 0442.pdf pdf icon | No Revision |
| Nickel carbonyl | 13463-39-3 | 0444.pdf pdf icon | No Revision |
| Nickel metal and other compounds (as Ni) | 7440-02-0 | 0445.pdf pdf icon | No Revision |
| Nicotine | 54-11-5 | 0446.pdf pdf icon | No Revision |
| Nitric acid | 7697-37-2 | 0447.pdf pdf icon | No Revision |
| Nitric oxide | 10102-43-9 | 0448.pdf pdf icon | No Revision |
| p-Nitroaniline | 100-01-6 | 0449.pdf pdf icon | No Revision |
| Nitrobenzene | 98-95-3 | 0450.pdf pdf icon | No Revision |
| 4-Nitrobiphenyl | 92-93-3 | 0451.pdf pdf icon | No Revision |
| p-Nitrochlorobenzene | 100-00-5 | 0452.pdf pdf icon | No Revision |
| Nitroethane | 79-24-3 | 0453.pdf pdf icon | No Revision |
| Nitrogen dioxide | 10102-44-0 | 0454.pdf pdf icon | No Revision |
| Nitrogen trifluoride | 7783-54-2 | 0455.pdf pdf icon | No Revision |
| Nitroglycerine | 55-63-0 | 0456.pdf pdf icon | No Revision |
| Nitromethane | 75-52-5 | 0457.pdf pdf icon | No Revision |
| 1-Nitropropane | 108-03-2 | 0459.pdf pdf icon | |
| 2-Nitropropane | 79-46-9 | 0460.pdf pdf icon | No Revision |
| N-Nitrosodimethylamine | 62-75-9 | 0461.pdf pdf icon | No Revision |
| o-Nitrotoluene | 88-72-2 | 0462.pdf pdf icon | No Revision |
| m-Nitrotoluene | 99-08-1 | 0463.pdf pdf icon | No Revision |
| p-Nitrotoluene | 99-99-0 | 0464.pdf pdf icon | No Revision |
| Octachloronaphthalene | 2234-13-1 | 0468.pdf pdf icon | No Revision |
| Octane | 111-65-9 | 0470.pdf pdf icon | No Revision |
| Oil mist (mineral) | 8012-95-1 | 0472.pdf pdf icon | No Revision |
| Osmium tetroxide | 20816-12-0 | 0473.pdf pdf icon | No Revision |
| Oxalic acid | 144-62-7 | 0474.pdf pdf icon | No Revision |
| Oxygen difluoride | 7783-41-7 | 0475.pdf pdf icon | No Revision |
| Ozone | 10028-15-6 | 0476.pdf pdf icon | No Revision |
| Paraquat (Paraquat dichloride) | 1910-42-5 | 0478.pdf pdf icon | No Revision |
| Parathion | 56-38-2 | 0479.pdf pdf icon | No Revision |
| Pentaborane | 19624-22-7 | 0481.pdf pdf icon | No Revision |
| Pentachloronaphthalene | 1321-64-8 | 0483.pdf pdf icon | No Revision |
| Pentachlorophenol | 87-86-5 | 0484.pdf pdf icon | No Revision |
| n-Pentane | 109-66-0 | 0486.pdf pdf icon | No Revision |
| 2-Pentanone | 107-87-9 | 0488.pdf pdf icon | No Revision |
| Perchloromethyl mercaptan | 594-42-3 | 0489.pdf pdf icon | No Revision |
| Perchloryl fluoride | 7616-94-6 | 0490.pdf pdf icon | No Revision |
| Petroleum distillates (naphtha) | 8002-05-9 | 0492.pdf pdf icon | No Revision |
| Phenol | 108-95-2 | 0493.pdf pdf icon | No Revision |
| p-Phenylene diamine | 106-50-3 | 0495.pdf pdf icon | No Revision |
| Phenyl ether (vapor) | 101-84-8 | 0496.pdf pdf icon | No Revision |
| Phenyl ether-biphenyl mixture (vapor) | 8004-13-5 | 0497.pdf pdf icon | No Revision |
| Phenyl glycidyl ether | 122-60-1 | 0498.pdf pdf icon | No Revision |
| Phenylhydrazine | 100-63-0 | 0499.pdf pdf icon | No Revision |
| Phosdrin | 7786-34-7 | 0503.pdf pdf icon | No Revision |
| Phosgene | 75-44-5 | 0504.pdf pdf icon | No Revision |
| Phosphine | 7803-51-2 | 0505.pdf pdf icon | No Revision |
| Phosphoric acid | 7664-38-2 | 0506.pdf pdf icon | No Revision |
| Phosphorus (yellow) | 7723-14-0 | 0507.pdf pdf icon | No Revision |
| Phosphorus pentachloride | 10026-13-8 | 0509.pdf pdf icon | No Revision |
| Phosphorus pentasulfide | 1314-80-3 | 0510.pdf pdf icon | No Revision |
| Phosphorus trichloride | 7719-12-2 | 0511.pdf pdf icon | No Revision |
| Phthalic anhydride | 85-44-9 | 0512.pdf pdf icon | No Revision |
| Picric acid | 88-89-1 | 0515.pdf pdf icon | No Revision |
| Platinum (soluble salts, as Pt) | 0520.pdf pdf icon | No Revision | |
| Portland cement | 65997-15-1 | 0521.pdf pdf icon | 0521-rev.pdf pdf icon |
| Propane | 74-98-6 | 0524.pdf pdf icon | No Revision |
| beta-Propiolactone | 57-57-8 | 0528.pdf pdf icon | No Revision |
| n-Propyl acetate | 109-60-4 | 0532.pdf pdf icon | No Revision |
| n-Propyl alcohol | 71-23-8 | 0533.pdf pdf icon | No Revision |
| Propylene dichloride | 78-87-5 | 0534.pdf pdf icon | No Revision |
| Propylene imine | 75-55-8 | 0537.pdf pdf icon | No Revision |
| Propylene oxide | 75-56-9 | 0538.pdf pdf icon | No Revision |
| n-Propyl nitrate | 627-13-4 | 0539.pdf pdf icon | No Revision |
| Pyrethrum | 8003-34-7 | 0540.pdf pdf icon | No Revision |
| Pyridine | 110-86-1 | 0541.pdf pdf icon | No Revision |
| Quinone | 106-51-4 | 0542.pdf pdf icon | No Revision |
| Rhodium (metal fume and insoluble compou | 7440-16-6 | 0544.pdf pdf icon | No Revision |
| Rhodium (soluble compounds, as Rh) | 0545.pdf pdf icon | No Revision | |
| Ronnel | 299-84-3 | 0546.pdf pdf icon | No Revision |
| Rotenone | 83-79-4 | 0548.pdf pdf icon | No Revision |
| Selenium | 7782-49-2 | 0550.pdf pdf icon | No Revision |
| Selenium hexafluoride | 7783-79-1 | 0551.pdf pdf icon | No Revision |
| Silica, amorphous | 7631-86-9 | 0552.pdf pdf icon | No Revision |
| Silica, crystalline (as respirable dust) | 14808-60-7 | 0553.pdf pdf icon | No Revision |
| Silver (metal dust and soluble compounds | 7440-22-4 | 0557.pdf pdf icon | No Revision |
| Soapstone (containing less than 1% quart | VV87 | 0558.pdf pdf icon | No Revision |
| Sodium fluoroacetate | 62-74-8 | 0564.pdf pdf icon | No Revision |
| Sodium hydroxide | 1310-73-2 | 0565.pdf pdf icon | No Revision |
| Stibine | 7803-52-3 | 0568.pdf pdf icon | No Revision |
| Stoddard solvent | 8052-41-3 | 0569.pdf pdf icon | No Revision |
| Strychnine | 57-24-9 | 0570.pdf pdf icon | No Revision |
| Styrene | 100-42-5 | 0571.pdf pdf icon | No Revision |
| Sulfur dioxide | 7446-09-5 | 0575.pdf pdf icon | No Revision |
| Sulfuric acid | 7664-93-9 | 0577.pdf pdf icon | No Revision |
| Sulfur monochloride | 10025-67-9 | 0578.pdf pdf icon | No Revision |
| Sulfur pentafluoride | 5714-22-7 | 0579.pdf pdf icon | No Revision |
| Sulfuryl fluoride | 2699-79-8 | 0581.pdf pdf icon | No Revision |
| 2,4,5-T | 93-76-5 | 0583.pdf pdf icon | No Revision |
| Talc (containing no asbestos and less th | 14807-96-6 | 0584.pdf pdf icon | No Revision |
| Tantalum (metal and oxide dust, as Ta) | 7440-25-7 | 0585.pdf pdf icon | No Revision |
| TEDP | 3689-24-5 | 0586.pdf pdf icon | No Revision |
| Tellurium | 13494-80-9 | 0587.pdf pdf icon | No Revision |
| Tellurium hexafluoride | 7783-80-4 | 0588.pdf pdf icon | No Revision |
| TEPP | 107-49-3 | 0590.pdf pdf icon | No Revision |
| o-Terphenyl | 84-15-1 | 0591.pdf pdf icon | No Revision |
| m-Terphenyl | 92-06-8 | 0592.pdf pdf icon | No Revision |
| p-Terphenyl | 92-94-4 | 0593.pdf pdf icon | No Revision |
| 1,1,1,2-Tetrachloro-2,2-difluoroeth | 76-11-9 | 0595.pdf pdf icon | No Revision |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane | 76-12-0 | 0596.pdf pdf icon | No Revision |
| 1,1,2,2-Tetrachloroethane | 79-34-5 | 0598.pdf pdf icon | No Revision |
| Tetrachloroethylene | 127-18-4 | 0599.pdf pdf icon | No Revision |
| Tetrachloronaphthalene | 1335-88-2 | 0600.pdf pdf icon | No Revision |
| Tetraethyl lead (as Pb) | 78-00-2 | 0601.pdf pdf icon | No Revision |
| Tetrahydrofuran | 109-99-9 | 0602.pdf pdf icon | No Revision |
| Tetramethyl lead (as Pb) | 75-74-1 | 0603.pdf pdf icon | No Revision |
| Tetramethyl succinonitrile | 3333-52-6 | 0604.pdf pdf icon | No Revision |
| Tetranitromethane | 509-14-8 | 0605.pdf pdf icon | No Revision |
| Tetryl | 479-45-8 | 0607.pdf pdf icon | No Revision |
| Thallium (soluble compounds, as Tl) | 0608.pdf pdf icon | No Revision | |
| Thiram | 137-26-8 | 0612.pdf pdf icon | No Revision |
| Tin | 7440-31-5 | 0613.pdf pdf icon | No Revision |
| Tin (organic compounds, as Sn) | 0614.pdf pdf icon | No Revision | |
| Titanium dioxide | 13463-67-7 | 0617.pdf pdf icon | No Revision |
| Toluene | 108-88-3 | 0619.pdf pdf icon | No Revision |
| Toluene-2,4-diisocyanate | 584-84-9 | 0621.pdf pdf icon | No Revision |
| o-Toluidine | 95-53-4 | 0622.pdf pdf icon | No Revision |
| Tributyl phosphate | 126-73-8 | 0625.pdf pdf icon | No Revision |
| 1,1,2-Trichloroethane | 79-00-5 | 0628.pdf pdf icon | No Revision |
| Trichloroethylene | 79-01-6 | 0629.pdf pdf icon | No Revision |
| Trichloronaphthalene | 1321-65-9 | 0630.pdf pdf icon | No Revision |
| 1,2,3-Trichloropropane | 96-18-4 | 0631.pdf pdf icon | No Revision |
| 1,1,2-Trichloro-1,2,2-trifluoroethane | 76-13-1 | 0632.pdf pdf icon | No Revision |
| Trifluorobromomethane | 75-63-8 | 0634.pdf pdf icon | No Revision |
| 2,4,6-Trinitrotoluene | 118-96-7 | 0641.pdf pdf icon | No Revision |
| Triorthocresyl phosphate | 78-30-8 | 0642.pdf pdf icon | No Revision |
| Triphenyl phosphate | 115-86-6 | 0644.pdf pdf icon | No Revision |
| Turpentine | 8006-64-2 | 0648.pdf pdf icon | No Revision |
| Uranium (insoluble compounds, as U) | 7440-61-1 | 0650.pdf pdf icon | No Revision |
| Uranium (soluble compounds, as U) | 0651.pdf pdf icon | No Revision | |
| Vanadium dust | 1314-62-1 | 0653.pdf pdf icon | No Revision |
| Vanadium fume | 1314-62-1 | 0654.pdf pdf icon | No Revision |
| Vinyl chloride | 75-01-4 | 0659.pdf pdf icon | No Revision |
| Vinyl toluene | 25013-15-4 | 0663.pdf pdf icon | No Revision |
| Warfarin | 81-81-2 | 0665.pdf pdf icon | No Revision |
| o-Xylene | 95-47-6 | 0668.pdf pdf icon | No Revision |
| Xylidine | 1300-73-8 | 0672.pdf pdf icon | No Revision |
| Yttrium | 7440-65-5 | 0673.pdf pdf icon | No Revision |
| Zinc chloride fume | 7646-85-7 | 0674.pdf pdf icon | No Revision |
| Zinc oxide | 1314-13-2 | 0675.pdf pdf icon | No Revision |
| Zirconium compounds (as Zr) | 7440-67-7 | 0677.pdf pdf icon | No Revision |
Page last reviewed: June 6, 2014
Content source: National Institute for Occupational Safety and Health