| Ma - Mak | Nummer |
| Machaerium scleroxylon | 18 |
| Macleaya cordata | 14 |
| Macrolepiota procera | Roh : 18 |
| Macrolepiota venenata | 14 |
| Madagaskar-Immergrün | 14 / 3 |
| Madagaskarpalme | 14 |
| Maggipilz | 16 |
| Magnesium | xxx |
| Magnesium, nicht stabilisiert | 12 |
| Magnesium, phlegmatisiert | |
| Magnesium-acetat | 12 / 16 |
| Magnesium-acetat Tetrahydrat | 16 |
| Magnesium-adipat | |
| Magnesium-alkyle | 2 / 12 |
| Magnesium-arsenat | 14 / 12 / 19a / # (19c) / # 232-(D-1) |
| Magnesium-bis((R)-2-(2,4-dichlor-phenoxy)-propionat) | 12 / 18 / # 6 Augen |
| Magnesium-bromat | 16 |
| Magnesium-bromid | xxx |
| Magnesium-carbonat | 16 |
| Magnesium-chlorat | |
| Magnesium-chlorid | 2 |
| Magnesium-chlorid Hexahydrat | 16 |
| Magnesium-citrat | |
| Magnesium-cyanid | 7 / # 21 Haut |
| Magnesium-di-ethyl | 2 |
| Magnesium-di-glutamat | 18 / # 227 H |
| Magnesium-di-methyl | 2 |
| Magnesium-ethylat | 16 |
| Magnesium-fluorid | |
| Magnesium-gluconat | |
| Magnesium-glutamat | 16 / 18 |
| Magnesium-hexafluor-silikat | 2 |
| Magnesium-hydroxid | 16 |
| Magnesium-hydroxy-silikat | 16 / 19a |
| Magnesium-hypochlorit | 16 |
| Magnesium-lactat | |
| Magnesium-methylat | |
| Magnesium-mono-peroxy-phthalat Hexahydrat | |
| Magnesium-nitrat | 16 / 13 |
| Magnesium-nitrat-Hexahydrat | |
| Magnesium-ortho-phosphat | 16 |
| Magnesium-oxid | 12 |
| Magnesium-Oxid-Sulfat | 16 / # (19a) |
| Magnesium-perchlorat | 16 |
| Magnesium-perchlorat Hydrat | |
| Magnesium-peroxid | |
| Magnesium-phosphid | 11 |
| Magnesium-Silicofluorid | 2 |
| Magnesium-silikat | 16 |
| Magnesium-stearat | |
| Magnesium-succinat | |
| Magnesium-sulfat | |
| Magnesium-tartrat | |
| Magnesium-tri-fluormethan-sulfonat | 2 |
| Magnesium-tri-silikat | 16 |
| Magnoflorin | 14 |
| (+)-Magnoflorin-iodid | 14 / 18 |
| Magnolia-x-soulangiana | 16 |
| Mahonia aquifolium | 14 |
| Maianthemum bifolium | |
| Maiapfel | 16 |
| Maiglöckchen | 14 |
| Mais | # 227 + |
| Maisbrand | 16 |