| Tetra [ a - b ] | Nummer |
| Tetra-acetyl-gentio-picrosid | 14 |
| Tetra-ammonium-5-(4-(7-amino-1-hydroxy-3-sulfonato-2- naphthylazo)-6-sulfonato-1-naphthylazo)-iso-phthalat |
16 / 18 |
| Tetra-ammonium-2-[6-[7-(2-carboxy-lato-phenylazo)-8- hydroxy-3,6-di-sulfonato-1-naphthylamino]-4-hydroxy- 1,3,5-triazin-2-ylamin]-benzoat |
xxx |
| Tetra-amylstannan | 12 |
| 1,4,8,11-Tetra-azacyclo-tetra-decan-5,7-dion | 2 |
| 3,6,9,12-Tetra-azatetra-decan-1,14-diamin | 16 / 18 |
| 1,4,7,10-Tetra-azonia-cyclo-dodecan-di-sulfat | 16 / # 6 Augen |
| Tetra-benazinum | 16 |
| Tetra-benzyl-pyrophosphat | 2 |
| Tetra-benzyl-thiuram-di-sulfid | 12 / # 56 Alkohol |
| Tetra-brom-benzol | 10 / # 57 Haut |
| Tetra-brom-brenzkatechin | 11 / # 57 Haut |
| Tetra-brom-catechol | |
| Tetra-brom-p-chinon | 16 / 13 |
| Tetra-brom-ethan | xxx |
| 1,1,2,2-Tetra-brom-ethan | 11 / 19 / # (19a+c) / # 7 Nakotisch |
| Tetra-brom-kohlenstoff | 11 / # 40 Tränen |
| Tetra-brom-methan | |
| 1,2,3,4-Tetra-brom-pentan | 11 |
| Tetra-brom-phthalsäure-anhydrid | |
| Tetra-brom-salicyl-anilid | 16 / # 18 Phototoxisch |
| Tetra-brom-o-sulfo-benzoesäure-cyclo-anhydrid | 2 |
| α,α,α’,α’-Tetra-brom-m-xylol | 11 / # 40 Tränen |
| α,α,α’,α’-Tetra-brom-o-xylol | |
| 2,3,5,6-Tetra-brom-p-xylol | 11 / # 57 Haut |
| Tetra-butyl-ammonium-borhydrid | 11 |
| Tetra-butyl-ammonium-bromid | |
| Tetra-butyl-ammonium-butyl-tri-phenylborat | 18 |
| Tetra-butyl-ammonium-chlorchromat | 11 / 12 / 18 / 19a - # 220 |
| Tetra-butyl-ammonium-chlorid | 2 / 11 |
| Tetra-butyl-ammonium-cyanid | 7 |
| Tetra-butyl-ammonium-fluorid Trihydrat | 5 |
| Tetra-butyl-ammonium-hexafluoro-phosphat | 2 |
| Tetra-butyl-ammonium-hydrogensulfat | 16 |
| Tetra-butyl-ammonium-hydroxid | 2 |
| Tetra-butyl-ammonium-iodid | 16 |
| Tetra-butyl-ammonium-nitrat | 2 / 13 |
| Tetra-butyl-ammonium-nitrit | 16 / 13 |
| Tetra-butyl-ammonium-perchlorat | 2 |
| Tetra-butyl-ammonium-(meta)-periodat | 16 |
| Tetra-butyl-ammonium-rhodanid | |
| Tetra-butyl-ammonium-tetra-fluoroborat | 11 |
| Tetra-butyl-ammonium-thiocyanat | 16 |
| Tetra-butyl-ammonium-tri-bromid | 11 |
| 3,3’,5,5’-Tetra-tert-butyl-bi-phenyl-2,2’-diol | xxx |
| Tetra-butyl-blei | 14 / 12 / 18 / 19 / # (19b) |
| 1,1,3,3-Tetra-butyl-1,3-ditin-oxy-di-caprylatenoat | xxx |
| Tetra-butyl-phosphonium-bromid | 11 |
| Tetra-butyl-phosphonium-chlorid | |
| Tetra-butyl-stannan | 14 / 2 / 12 / 18 / # 21 Haut / # 27 Immun |
| Tetra-butyl-titanat | 12 / 16 / 18 / 19 / # 6 Augen |
| Tetra-butyl-zinn | 14 / 2 / 12 / 18 / # 21 Haut / # 27 Immun |