| Oa - Oct | Nummer |
| Obona | 16 |
| Obstbaum-karbolineum | 14 / 10 / 19 |
| Ochratoxin A | 14 / 19a / # (19c) |
| Octa-brom-di-phenylether | 16 / 19b |
| Octa-carbonyl-di-cobalt | 14 / 12 / 18 / 19 |
| 1,2,3,4,6,7,8,9-Octa-chlor-di-benzofuran | 14 / 19 / # (19a) |
| 1,2,3,4,6,7,8,9-Octa-chlor-di-benzo-p-dioxin | |
| 1,2,4,5,6,7,8,8-Octa-chlor-2,3-epoxy-3a,4,7,7a-tetra-hydro- 4,7-endo-methano-indan |
16 |
| 1,3,4,5,6,7,8,8-Octa-chlor-1,3,3a,4,7,7a-hexahydro-4,7- endo-methano-iso-benzofuran |
14 |
| Octa-chlor-naphthalin | 14 / 9 / 19 / # 21 Haut |
| 1,2,4,5,6,7,8,8-Octa-chlor-3a,4,7,7a-tetra-hydro-4,7-metha- noindan |
16 / 19 / # (19a) / # 21 Haut |
| Octa-cosansäure | 16 |
| 1,12-Octa-decandiol | |
| 1-Octa-decanol | 16 / selten 18 |
| Octa-decansäure | 16 |
| 9-Octa-decen-1-ol | |
| cis-9-Octa-decensäure | 16 / # (19a) |
| trans-9-Octa-decensäure | 16 |
| 9-Octa-decenylamin | 2 |
| Octa-decenylamin Hydrofluorid | 16 |
| Octa-decylamin | |
| Gemisch aus : n-Octa-decyl-amino-di-ethyl-bis-(hydrogen- maleat) U N D n-Octa-decyl-amino-di-ethyl-hydrogen- maleat-hydrogen-phthalat |
16 / 18 |
| Octa-decyl-di-methyl-chlorsilan | 2 |
| Octa-decyl-methacrylat | |
| Octa-decyl-tri-chlorsilan | 11 |
| Octa-decyl-tri-methoxy-silan | 12 / 16 / 18 |
| Octa-decyl-tri-methyl-ammonium-bromid | 16 |
| 1,7-Octadien | 10 |
| 1,7-Octadiendioxid | 14 / 19 / # (19a) |
| 1,7-Octadiin | 16 |
| Octa-fluorbuten-2 | |
| Octa-fluorcyclo-butan | xxx |
| Octa-fluorcyclo-butan (RC-318) | 16 |
| Octa-fluorpropan | |
| Octa-hydro-azocin | 2 |
| Octaldehyd | 16 |
| Octa-methylcyclo-tetra-siloxan | 2 / # (19b) |
| Octa-methyl-di-phosphorsäure-tetramid | 4 / 18 / 19 |
| Octa-methylen-chlorid | 16 |
| Octa-methylen-diamin | |
| Octa-methyl-pyrophosphoramid | 4 / 18 / 19 |
| Octa-moxinum | 16 |
| Octamylamin | |
| Octan | |
| i-Octan | xxx |
| n-Octan | 10 |
| Octanal | 16 |
| Octanatrium-2-(8-(4-chlor-6-(3-((4-chlor-6-(3,6-di-sulfonato- 2-(1,5-di-sulfonato-naphthalin-2-ylazo)1-hydroxy-naphthalin- 8-yl-amino)-1,3,5-triazin-2-yl)-amino-methyl)-phenyl-amino) 1,3,5-triazin-2-yl-amino)3,6-di-sulfonato-1-hydroxy-naphtha- lin-2-ylazo)-naphthalin-1,5-di-sulfonat |
16 / # 6 Augen |
| Octanatrium-2-(6-(4-chlor-6-(3-(N-methyl-N-(4-chlor-6-(3,5- di-sulfonato-2-naphthyl-azo)-1-hydroxy-6-naphthyl-amino) -1,3,5-triazin-2-yl)-amino-methyl)-phenyl-amino)-1,3,5-tri- azin-2-yl-amino)-3,5-di-sulfonato-1-hydroxy-2-naphthyl-azo) naphthalin-1,5-di-sulfonat |
16 / 18 / # 6 Augen |
| Octandisäure | 16 |
| Octandisäure-dinitril | 14 / 7 |
| 1-Octanol | 16 |
| 2-Octanol | 10 |
| n-Octanol | xxx |
| 2-Octanon | 16 |
| 3-Octanon | |
| Octansäure | 2 |
| Octansäure Natriumsalz | 16 |
| Octansäure-chlorid | 2 |
| Octansäure-ethylester | 16 |
| Octansäure-methylester | |
| Octansäure-nitril | 7 / 16 |
| 1-Octan-sulfonyl-chlorid | 2 |
| 1-Octanthiol | 16 |
| tert-Octanthiol | |
| Octaphenyl-cyclo-tetra-siloxan | |
| Octen-1 | xxx |
| 1-Octen | 10 |
| trans-2-Octen | |
| trans-3-Octen | |
| trans-4-Octen | |
| 1-Octen-3-ol | 16 |
| 1-Octen-3-ylacetat | 18 |
| Octhilinon | 14 / gelegentlich 18 / 19 / # 21 Haut / Über AGW 19b |
| 1-Octin | 2 |
| 4-Octin | 10 |
| 1-Octin-3-ol | 2 |
| Octinsäure-ester | 16 |
| 2-Octinsäure-methylester | 14 / 18 |
| Octodrin | 16 |
| Octopamin | xxx |
| DL-Octopamin Hydrochlorid | 14 |
| n-Octyl-acetat | 16 |
| Octyl-aldehyd | |
| Octyl-amin | 2 |
| tert-Octyl-amin | |
| 1-Octyl-azepin-2-on | 2 / 18 |
| Octyl-bromid | 16 |
| Octyl-chlorid | |
| 2-n-Octyl-2,3-di-hydro-iso-thiazol-3-on | 14 / gelegentlich 18 / 19 / # 21 Haut / Über AGW 19b |
| 2-Octyl-dodecanol | 16 |
| Octyl-englykol | 10 / # 6 Augen |
| Octyl-gallat | 16 / gelegentlich 18 |
| 2-Octyl-2H-iso-thiazolin-3-on | 14 / gelegentlich 18 / 19 / # 21 Haut / Über AGW 19b |
| Octyl-mercaptan | 16 |
| tert-Octyl-mercaptan | |
| 4-tert-Octyl-phenol | |
| Octyl-phosphonsäure | |
| Octyl-polyethylen-glykolether | |
| 1-Octyl-2-pyrrolidon | 2 |
| Octyl-stannonsäure | 14 / 12 / 19 / # 21 Haut / # 27 Immun |
| Octyl-sulfat Natriumsalz | 16 |
| 5-[2-(Octyl-sulfinyl)-propyl]-1,3-benzo-dioxol | |
| 2-(Octyl-thio)-ethanol | 2 / # 6 Augen |
| Octyl-tri-chlorsilan | 2 |
| Octyl-3,4,5-tri-hydroxy-benzoat | 16 / gelegentlich 18 |
| Octyl-zinn-tri-chlorid | 14 / 12 / 16 / 18 / 19 / # 21 Haut / # 27 Immun |