| Name | CAS No. |
| Barbituric acid | 67-52-7 |
| barium | 7440-39-3 |
| Barium carbonate | 513-77-9 |
| Barium chloride | 10361-37-2 |
| Barium sulfate | 7727-43-7 |
| Benzaldehyde | 100-52-7 |
| Benzene | 71-43-2 |
| Benzyl alcohol | 100-51-6 |
| Benzyl Chloride | 100-44-7 |
| bis(2-propylheptyl) phthalate | 53306-54-0 |
| BISMUTH(III) OXIDE | 12048-50-9 |
| Bixin | 6983-79-5 |
| Boric anhydride | 1303-86-2 |
| bornan-2-one | 76-22-2 |
| Boron | 7440-42-8 |