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Substance CAS Number(s) Health Factors
Bacillus Anthracis    
Bacteria    
Barium (Insoluble Compounds) 7440-39-3  
Barium, Soluble Compounds (as Ba) 7440-39-3 X
Barium Sulfate (Respirable Fraction) 7727-43-7  
Barium Sulfate (Total Dust) 7727-43-7  
Basic Red 2 477-73-6  
Baythroid 68359-37-5  
Bismark Brown 5421-66-9  
Beclomethasone Dipropionate 5534-09-8  
Benefin 1861-40-1 X
Benomyl (Respirable Fraction) 17804-35-2 X
Benomyl (Total Dust) 17804-35-2 X
Benzaldehyde 100-52-7 X
Benz(a)Anthracene 56-55-3 X
Benzene 71-43-2 X
Benzenephosphonic Acid 1571-33-1  
Benzenesulfonic Acid 98-11-3  
Benzenesulfonyl Chloride 98-09-9  
Benzidine 92-87-5 X
Benzidine Based Dyes 92-87-5 X
Benzil 134-81-6  
Benzo(b)fluoranthene 205-99-2 X
Benzo(k)fluoranthene 207-08-9  
2,3-Benzofuran 271-89-6 X
Benzoic acid 65-85-0  
Benzo(g,h,i)perylene 191-24-2  
Benzophenone 119-61-9  
Benzophenonetetracarboxylic Acid Dianhydride 2421-28-5  
Benzo [a] Pyrene 50-32-8 X
Benzo (e) Pyrene 192-97-2 X
Benzothiazole 95-16-9  
2-Benzothiazolethiol 149-30-4 X
Benzotrichloride 98-07-7 X
Benzoyl Chloride 98-88-4 X
Benzoyl Peroxide 94-36-0 X
Benzyl Acetate 140-11-4 X
Benzyl Alcohol 100-51-6 X
Benzyl Bromide 100-39-0  
Benzyl Chloride 100-44-7 X
Beryllium and Beryllium Compounds (as Be) 7440-41-7 (Metal) X
Betamethasone Acetate 987-24-6  
Betamethasone Dipropionate 5593-20-4  
Betasan 741-58-2 X
Bifenthrin 82657-04-3 X
Bipolaris species   X
Bismuth 7440-69-6 X
Bismuth Telluride, Se Doped 1304-82-1 X
Bismuth Telluride, Undoped (Respirable Fraction) 1304-82-1 X
Bismuth Telluride, Undoped (Total Dust) 1304-82-1 X
Bisphenol A 80-05-7  
Black Powder 21725-46-2  
Bladex   X
Boiling Point Range    
Borates, Tetra, Sodium Salts, Anhydrous 1303-43-4 X
Borates, Tetra, Sodium Salts, Decahydrate 1303-96-4 X
Borates, Tetra, Sodium Salts, Pentahydrate 12179-04-3 X
Boric Acid 10043-35-3 X
Boron 7440-42-8 X
Boron Oxide (Total Dust) 1303-86-2 X
Boron Tribromide 10294-33-4 X
Boron Trifluoride 7637-07-2 X
Botran 99-30-9  
Bromacil 314-40-9  
Bromelain 9001-00-7  
Bromine 7726-95-6 X
Bromine Pentafluoride 7789-30-2 X
Bromoacetic Acid 79-08-3  
Bromobenzene 108-86-1  
p-Bromobenzylbromide    
Bromoform 75-25-2 X
1-Bromonaphthalene 90-11-9  
1-Bromopropane 106-94-5 X
2-Bromopropane 75-26-3 X
Bronkosol 50-96-4  
Brucine 357-57-3  
Butadiene 106-99-0 X
Butane 106-97-8 X
1,3-Butanediol 107-88-0  
1,4-Butanediol diglycidyl ether 2425-79-8  
1,2,4-Butanetriol, trinitrate 6659-60-5  
2-Butanone 78-93-3 X
Butene 25167-67-3  
2-Butoxyethanol 111-76-2 X
1-(2-Butoxyethoxy)ethanol 54446-78-5  
1-Butoxy-2-propanol 5131-66-8 X
n-Butyl Acetate 123-86-4 X
sec-Butyl Acetate 105-46-4 X
tert-Butyl Acetate 540-88-5 X
Butyl Acrylate 141-32-2 X
n-Butyl Alcohol 71-36-3 X
sec-Butyl Alcohol 78-92-2 X
tert-Butyl Alcohol 75-65-0 X
Butylamine 109-73-9 X
sec-Butylbenzene 135-98-8  
N-t-Butyl-2-Benzothiazolesulfenamide 95-31-8 X
Butyl Benzyl Phthalate 85-68-7 X
Butyl Butryrate 109-21-7  
Butyl Carbitol 112-34-5 X
Butyl Cellosolve Acetate 112-07-2  
tert-Butyl Chromate (as CrO3) 1189-85-1 X
n-Butyl-2-cyanoacrylate 6606-65-1 X
n-Butyl Glycidyl Ether 2426-08-6 X
tert-Butyl Glycidyl Ether 7665-72-2  
Butyl Isocyanate 111-36-4 X
n-Butyl Lactate 138-22-7 X
Butyl Mercaptan 109-79-5 X
t-Butylmercaptan 75-66-1  
Butyl Methacrylate 97-88-1  
tert-Butyl Methyl Ether 1634-04-4 X
tert-Butylperoxide 110-05-4  
2,4-Di-Tert-Butylphenol 96-76-4  
2,6-Di-Tert-Butylphenol 128-39-2  
3,5-Di-Tert-Butylphenol 1138-52-9  
o-sec-Butylphenol 89-72-5  
p-(tert-Butyl)Phenol 98-54-4  
4-tert-Butylphenyl glycidyl ether 3101-60-8  
Butyl Stearate 123-95-5  
p-tert-Butyltoluene 98-51-1 X
Butyraldehyde 123-72-8 X
Butyraldehyde Oxime 110-69-0  
Butyric acid 107-92-6 X
beta-Butyrolactone 3068-88-0 X
gamma-Butyrolactone 96-48-0 X