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Substance CAS Number(s) Health Factors
Cadmium 7440-43-9 X
Cadmium Dust (as Cd) 7440-43-9 X
Cadmium Fume (as Cd) 1306-19-0; 7440-43-9; 1306-19-0 X
Calcium Arsenate (as As) 7778-44-1 X
Calcium Bromide 7789-41-5  
Calcium Carbonate (Respirable Fraction) 1317-65-3; 471-34-1  
Calcium Carbonate (Total Dust) 471-34-1; 1317-65-3 X
Calcium Cyanamide 156-62-7 X
Calcium hydroxide (Respirable Fraction) 1305-62-0 X
Calcium hydroxide (Total Dust) 1305-62-0 X
Calcium Oxide 1305-78-8 X
Calcium Silicate (Respirable Fraction) 1344-95-2  
Calcium Silicate (Total Dust) 1344-95-2  
Calcium Sulfate (Respirable Fraction)
 7778-18-9  
Calcium Sulfate (Total Dust) 7778-18-9  
Camphene 79-92-5  
Camphor 76-22-2 X
Caprolactam (Dust) 105-60-2 X
Caprolactam (Vapor) 105-60-2 X
Capsaicin 404-86-4  
Captafol 2425-06-1 X
Captan 133-06-2 X
Carbadox 6804-07-5  
Carbaryl 63-25-2 X
Carbazole 86-74-8 X
Carbitol Acetate 112-15-2  
Carbofuran 1563-66-2 X
Carbon Black 1333-86-4 X
Carbon Dioxide 124-38-9 X
Carbon Disulfide 75-15-0 X
Carbon Monoxide 630-08-0 X
Carbon Monoxide (by COHb) 630-08-0 X
Carbon Tetrabromide 558-13-4 X
Carbon Tetrachloride 56-23-5 X
Carbon Tetrafluoride 75-73-0  
Carbonyl Fluoride 353-50-4  
Carbonyl Sulfide 463-58-1  
Carbophenothion 786-19-6  
Carboxin 5234-68-4  
3-Carene 13466-78-9  
Carisoprodol 78-44-4  
Catechol 120-80-9 X
Cellulose (Respirable Fraction) 9004-34-6 X
Cellulose (Total Dust) 9004-34-6 X
Cellulose Acetate 9004-35-7  
Cerium 7440-45-1  
Cesium Hydroxide 21351-79-1 X
Chaetomium species   X
Chloramine-T 127-65-1 X
Chloramphenicol 56-75-7  
Chlordane 57-74-9 X
Chlordimeform 6164-98-3  
Chlorinated Camphene 8001-35-2 X
Chlorinated Diphenyl Oxide 55720-99-5 X
Chlorine 7782-50-5 X
Chlorine (as Available Chlorine) 7782-50-5 X
Chlorine Dioxide 10049-04-4 X
Chlorine Trifluoride 7790-91-2 X
Chloroacetaldehyde 107-20-0 X
alpha-Chloroacetophenone 532-27-4 X
Chloroacetyl Chloride 79-04-9  
o-Chloroaniline 95-51-2  
p-Chloroaniline 106-47-8  
Chlorobenzene 108-90-7 X
o-Chlorobenzylidene Malononitrile 2698-41-1 X
Chlorobromomethane 74-97-5 X
Chlorodifluoromethane 75-45-6 X
Chlorodiphenyl (21% Cl) 11104-28-2 X
Chlorodiphenyl (32% Cl) 1141-16-5 X
Chlorodiphenyl (42% Cl) 53469-21-9; 27323-18-8 X
Chlorodiphenyl (48% Cl) 12672-29-6 X
Chlorodiphenyl (54% Cl) 11097-69-1 X
Chlorodiphenyl (60% Cl) 11096-82-5 X
Chlorodiphenyl (62% Cl) 37324-23-5  
Chlorodiphenyl (1016) 12674-11-2 X
tris-(2-Chloroethyl)amine 555-77-1  
bis-(2-Chloroethyl)sulfide 505-60-2  
Chloroform 67-66-3 X
bis(Chloromethyl) ether 542-88-1 X
5-Chloro-2-Methyl-4-Isothiazolin-3-One 26172-55-4  
Chloromethyl Methyl Ether 107-30-2 X
4-Chloro-3-methylphenol 59-50-7  
alpha-Chloronaphthalene 90-13-1  
1-Chloro-2-nitrobenzene 88-73-3  
1-Chloro-1-Nitropropane 600-25-9 X
Chloropentafluoroethane 76-15-3  
Chlorophene 120-32-1  
o-Chlorophenol 95-57-8  
p-Chlorophenol 106-48-9  
Chloropicrin 76-06-2 X
beta-Chloroprene 126-99-8 X
2-Chloropyridine 109-09-1 X
o-Chlorostyrene 2039-87-4 X
Chlorothalonil 1897-45-6 X
m-Chlorotoluene 108-41-8  
o-Chlorotoluene 95-49-8 X
p-Chlorotoluene 106-43-4  
6-Chloro-m-Toluidine-4-Sulfonic Acid 88-53-9  
1-Chloro-4-trifluoromethylbenzene 98-56-6  
2-Chloro-6-(Trichloromethyl) Pyridine (Respirable Fraction) 1929-82-4 X
2-Chloro-6-(Trichloromethyl) Pyridine (Total Dust) 1929-82-4 X
Chlorotrifluoroethylene 79-38-9  
Chlorpyrifos 2921-88-2 X
Chromic Acid & Chromates (as CrO3)   X
Chromium (II) Compounds (as Cr) 7440-47-3 X
Chromium (III) Compounds (as Cr) 7440-47-3 X
Chromium (VI) (Hexavalent Chromium) 18540-29-9;1333-82-0; 1344-38-3; 7440-47-3; 7758-97-6; 7775-11-3; 7778-50-9; 7784-01-2; 7789-00-6; 7789-06-2; 7789-09-5; 7789-12-0; 7789-98-9 ;10294-40-3; 10588-01-9; 12656-85-8; 14986-48-2; 18454-12-1; 18540-29-9 X
Chromium, Metal and Insoluble Salts 7440-47-3; 1308-38-9 X
Chromium, Soluble Chromic, Chromous Salts (as Cr) 7440-47-3 X
Chrysene X
Chrysosporium species   X
C.I. Direct Orange 6, disodium salt 6637-88-3  
Cinnamaldehyde 104-55-2 X
Citric Acid 77-92-9  
Cladosporium species   X
Clopidol (Respirable Fraction) 2971-90-6 X
Clopidol (Total Dust) 2971-90-6 X
Clothianidin 210880-92-5 X
Coal Dust   X
Coal Dust (<5% Si02, Respirable Fraction) 68131-74-8 X
Coal Dust (> or 5% SiO2) (Respirable Quartz Fraction)   X
Coal Tar Pitch Volatiles (benzene soluble fraction) 65996-93-2 X
Cobalt, Metal, Dust & Fume (as Co) 7440-48-4 X
Cobalt Acetate 71-48-7  
Cobalt Carbonyl (as Co) 10210-68-1  
Cobalt Hydrocarbonyl (as Co) 16842-03-8  
Cocaine 50-36-2  
Coke Oven Emissions 7440-48-4 X
% Combustible Dust    
Combustible Material    
Command 81777-89-1  
Copper Dusts & Mists (as Cu) 7440-50-8 X
Copper Fume (as Cu) 7440-50-8 ; 1317-38-0 X
Co-Ral 56-72-4 X
Coronene 191-07-1 X
Corynebacterium species   X
Cotton Dust (Raw)   X
Coumarin 91-64-5 X
Crag® Herbicide (Respirable Fraction) 136-78-7 X
Crag® Herbicide (Total Dust) 136-78-7 X
Creosote 8001-58-9 X
Cresol (All Isomers) 1319-77-3; 108-39-4; 95-48-7; 106-44-5 X
Crotonaldehyde 123-73-9; 4170-30-3 X
Crufomate 299-86-5 X
Cryptococcus Neoformans    
Cumene 98-82-8 X
Cumene Hydroperoxide 80-15-9  
Cunninghamella species   X
Curvularia species   X
Cutting Fluids, Synthetic    
Cyanamide 420-04-2 X
Cyanide (as CN) 57-12-5 X
Cyanoethyl acrylate 106-71-8  
Cyanogen 460-19-5 X
Cyanogen Chloride 506-77-4 X
Cyanoguanidine 461-58-5  
Cyanuric Acid 108-80-5  
Cyanuric Chloride 108-77-0 X
Cyclohexane 110-82-7 X
Cyclohexanol 108-93-0 X
Cyclohexanone 108-94-1 X
Cyclohexene 110-83-8 X
Cyclohexylamine 108-91-8 X
N-Cyclohexyl-2-benzothiazolesulfenamide 95-33-0 X
Cyclonite 121-82-4 X
Cyclopentadiene 542-92-7 X
Cyclopentane 287-92-3  
Cyhexatin 13121-70-5 X
Cymene 99-87-6  
Cypermethrin 52315-07-8