| Ba - Bc | Nummer |
| Bacillus thuringiensis | xxx |
| Bacitracin | 14 / gelegentlich 18 |
| Backaroma | xxx |
| Backpulver | xxx |
| Baclofen | xxx |
| Bajonettpflanze | # 227 + |
| Baldrian | xxx |
| Baldrianöl | 14 |
| Balsambaum | 14 / 15 |
| Balsamine, Garten- | 18 / # 227 (+) |
| Bambuterol | xxx |
| Bamethan | xxx |
| Banisterin | 14 |
| Banisteriopsis caapi | |
| Baptisia tinctoria | 16 |
| Barban | 14 / 18 |
| Barbital | 17 / # (19c) |
| Barbiturate »Online!« | xxx |
| Barbitursäure | 17 |
| Bärentraube | # 227 (+) |
| Barium | 12 |
| Barium-acetat | 12 / 16 |
| Barium-azid | 7 / 12 |
| Barium-bromat | 12 |
| Bariumcarbonat | |
| Bariumchlorat | |
| Bariumchlorid | |
| Barium-cyanid | 7 / # 21 Haut |
| Barium-di-chlorid | 12 |
| Barium-fluorid | 12 / 16 |
| Barium-hydroxid | 2 |
| Barium-hypochlorit | 12 |
| Barium-nitrat | |
| Barium-oxid | |
| Barium-perchlorat | |
| Barium-permanganat | |
| Barium-peroxid | |
| Barium-polysulfide | |
| Barium-Salze | |
| Barium-selenat | 14 / 12 |
| Barium-selenit | |
| Barium-sulfat | 12 |
| Barium-sulfid | |
| Bärlapp, Keulen- | 14 |
| Bärlauch | 16 |
| Barthrin | 14 |
| Barythydrat | 2 |
| Basic Blue 7 | 18 |
| Basic Red 9 | 14 / 19a |
| Basic Violet 1 | 16 / gelegentlich 18 / # (19a) / # 6 Augen |
| C.I.-Basic Violet-3 | 16 / # (19a) / # 6 Augen |
| C.I.-Basic Violet-3 mit ≥ 0,1 % Michlers Keton | 19a / # 6 Augen |
| Basilikumöl | 16 |
| Baummoos-Extrakt(e) | 18 |
| Baumwolle | 14 / 15 / 18 |
| Baumwollstaub | 16 / 18 / Über AGW 19b |
| B B C | xxx |