Table 6A ACGIH IDLH.

Chemical Name IDLH (ppm) IDLH (mg/m3)
Acetaldehyde 10000  
Acetic acid 1000  
Acetic anhydride 1000  
Acetone 20000  
Acetonitrile 4000  
Acetylene tetrabromide 10  
Acrolein 5  
Acrylamide unknown  
Acrylonitrile 500  
Aldrin   100
Allyl alcohol 150  
Allyl chloride 300  
Allyl glycidyl ether 270  
2-Aminopyridine 5  
Ammonia 500  
Ammonium sulfamate   5000
n-Amyl acetate 4000  
sec-Amyl acetate 9000  
Aniline 100  
o-Anisidine   50
p-Anisidine   50
Antimony compounds (as Sb)   80 Sb/m3
ANTU   100
Arsenic (inorganic compounds, as As)   100 As/m3
Arsine 6  
Azinphosmethyl   20
Barium (soluble compounds, as Ba)   1100 mg Ba/m3
Benzene 3000  
Benzoyl peroxide   7000
Benzyl chloride 10  
Beryllium compounds (as Be)   10 mg Be/m3
Boron oxide no evidence  
Boron trifluoride 100  
Bromine 10  
Bromoform unknown  
1,3-Butadiene 20000 (LED  
2-Butanone 3000  
2-Butoxyethanol 700  
n-Butyl acetate 10000  
sec-Butyl acetate 10000  
tert-Butyl acetate 10000  
n-Butyl alcohol 8000  
sec-Butyl alcohol 10000  
tert-Butyl alcohol 8000  
n-Butylamine 2000  
tert-Butyl chromate   30 mg CrO3/m3
n-Butyl glycidyl ether 3500  
n-Butyl mercaptan 2500  
p-tert-Butyltoluene 1000  
Cadmium dust (as Cd)   50 mg Cd/m3
Cadmium fume (as Cd)    
Calcium arsenate (as As)   100 mg As/m3
Calcium oxide unknown  
Camphor (synthetic)   200
Carbaryl   600
Carbon black no evidence ...

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