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 ... |
