| Acetaldehyde | A | D | D | A | D | A | B | A | A | C | A/150 |
| Acetamide | A | A | A | A | A | A | A | A | A | A/70 | A/140 |
| Acetate Solvents | C | D | D | C | A | B | A | A | B/72 | A | |
| Acetic Acid, Glacial | A | D | D | B | D | A | B | D | A | A/100 | A/120 |
| Acetic Acid--20% | A | B | C | A | C | A | B | D | A | B/70 | A |
| Acetic Acid--30% | A | B | C | A | C | A | B | D | A | C | A |
| Acetic Acid--50% | B | C | C | A | C | A | B | D | A | C | B |
| Acetic Anhydryde | A | B | D | B | D | A | B | D | A | C | B/70 |
| Acetone | B | D | D | A | D | A | A | A | A | A | D |
| Acetone Cyanohydrin | B | D | D | D | A | A | B | B | |||
| Acetonitrile (MeTDyl Cyanide) | A | C | A | D | A | A | A | A | B | D | |
| Acetophenone | B | D | D | A | D | A | B | A | B | A/70 | A/70 |
| Acetyl Acetone | D | D | A | D | A | B | D | B | A | ||
| Acetyl Chloride | B | D | D | C | B | A | D | A | B | A | |
| Acetylene | C | B | A | A | A | A | A | A | A/72 | A | |
| Acetyl Salicyclic Acid (Aspirin) |
A | D | B | A | A | D | B | ||||
| Acetylene Tetrabromide | D | D | A | A |
|
D | A | ||||
| Acrolein (Acryladehyde) | C | B | A | A | A | B | B | ||||
| Acrylonitrile | B | D | D | D | D | A | B | A | A | B | A |
| Adipic Acid | B | D | B | A | B | B | B | B | A | ||
| Allyl Alcohol | A | A | A | B | A | B | A | A | A | ||
| Allyl Bromide | D | D | B | A | D | A | |||||
| Allyl Chloride | D | D | D | B | A | D | C | B | A | A | |
| Almond Oil(Artificial) | D | D | B | D | A | A | |||||
| Alkazene | D | D | D | D | A | A | A | ||||
| Aluminum Acetate | A | B | C | A | D | A | A | D | B | ||
| Aluminum Bromide | A | D | D | B | A | D | A | ||||
| Aluminum Chloride 20% | A | A | A | A | A | A | D | C | C | A | A |
| Aluminum Flouride | A | A | A | B | A | D | A | C | A | A | |
| Aluminum Hydroxide | A | A | A | A | A | A | A | D | A | A | A |
| Aluminum Nitrate | A | A | A | A | A | A | B | D | A | A | A |
| Aluminum Phosphate | A | A | A | A | A | A | A | A | A | ||
| Aluminum Potassium Sulfate (Alum) |
A | A | A | A | A | A | B | D | A | A | A |
| Aluminum Sodium Sulfate Soda (Alum) |
A | A | A | A | A | A | |||||
| Aluminum Sulfate | A | A | A | A | A | A | A | D | A | A | A |
| Amines | A | B | D | D | A | B | A |


