| Sostanza | Gomma butilica | Lattice | Polietilene clorurato |
Uretano |
PVC |
Nitrile |
Neoprene |
Altro |
| Magnesium Chloride | 1 | 1 |
1 |
1 |
1 |
1 |
||
| Magnesium Hydroxide | 1 | 1 |
4 |
1 |
2 |
1 |
||
| Magnesium Sulfate | 2 | 1 |
1 |
1 |
1 |
1 |
||
| Malathion | 1 |
3 |
X |
2 |
1 |
2 |
||
| Maleic Acid | 1 |
1 |
1 |
1 |
2 |
3 |
||
| Maleic Anhydride | 4 | 1 |
1 |
1 |
4 |
4 |
||
| Malic Acid | 2 | 1 |
1 |
1 |
1 |
2 |
||
| Mercuric Chloride | 4 |
1 |
X |
4 |
1 |
1 |
||
| Mercury | 4 |
1 |
1 |
1 |
1 |
1 |
||
| Mesityl Oxide | 3 |
4 |
4 |
4 |
4 |
|||
| Methacrylic Acid | 1 |
3 |
4 |
|||||
| Methacrylonitrile | 1 |
4 |
4 |
|||||
| Methane | 4 | 1 |
3 |
1 |
1 |
2 |
||
| Methanesulphonic acid | 1 |
|||||||
| Methenyl Trichloride | 4 |
4 |
||||||
| Methoxy-4-Methyl-2-Pentanone | 1 |
|||||||
| Methanol | 4 |
1 |
4 |
1 |
3 |
2 |
||
| Methyl Bromide | 4 |
X |
X |
X |
2 |
4 |
||
| Methyl Butyl Ether | 4 |
4 |
||||||
| Methyl Butyl Ketone | 4 | X |
4 |
X |
4 |
4 |
||
| Methyl Cellosolve | 3 |
1 |
4 |
1 |
2 |
3 |
||
| Methyl Chloride | 4 |
3 |
4 |
3 |
4 |
4 |
||
| Methyl Chloroform | 4 |
4 |
3 |
3 |
||||
| Methyl Cyanide | 1 |
X |
2 |
|||||
| Methyl Ethyl Ketone MEK | 1 |
4 |
3 |
4 |
4 |
3 |
4 |
|
| Methyl Eugenol | 1 |
|||||||
| Methyl Formate | 2 |
4 |
2 |
4 |
2 |
|||
| Methyl Glycol Ether | 3 |
3 |
||||||
| Methyl Iodide | 4 |
4 |
4 |
|||||
| Methyl Isobutyl Ketone | 4 |
3 |
4 |
4 |
4 |
3 |
||
| Methyl Isocyanate | 3 |
4 |
4 |
4 |
||||
| Methyl Oleate | 1 |
1 |
1 |
4 |
4 |
|||
| Methyl Salicylate | X |
X |
X |
4 |
4 |
|||
| Methylacetate | 1 |
4 |
1 |
4 |
4 |
4 |
2 |
|
| Methylacrylate | 1 |
4 |
3 |
4 |
3 |
4 |
3 |
|
| Methylacrylic Acid | 2 |
4 |
2 |
4 |
2 |
|||
| Methylamine (40% in water) | 1 |
3 |
1 |
1 |
||||
| Methylaminopropylamine, 3- | 1 |
4 |
3 |
|||||
| Methylbenzene | 4 |
4 |
||||||
| Methylene | 4 |
4 |
||||||
| Methylene Chloride | 3 |
4 |
3 |
4 |
4 |
4 |
4 |
|
| Methylene Dianiline | 1 |
3 |
||||||
| Methylene Dichloride | 4 |
4 |
4 |
4 |
||||
| Methylethanolamine, N- | 1 |
1 |
||||||
| Methylmethacrylate | 3 |
4 |
3 |
4 |
4 |
4 |
4 |
|
| Methylpyrrolidone | 3 |
4 |
||||||
| Methyl-4-tert-butylbenzene | 3 |
4 |
||||||
| Mineral Oil | 1 |
1 |
1 |
1 |
2 |
|||
| Monochlorobenzene | 3 |
4 |
3 |
4 |
4 |
|||
| Monoethanolamine | 1 |
3 |
X |
4 |
X |
2 |
2 |
|
| Monoethylamine (40% water) | 1 |
1 |
3 |
|||||
| Monoisopropaxidamine (95%) | 1 |
|||||||
| Monoisopropylamine | 3 |
|||||||
| Monomethyl Aniline | 3 |
4 |
3 |
4 |
4 |
|||
| Monomethyl Ether | 2 |
2 |
2 |
1 |
1 |
|||
| Monovinyl Acetylene | 3 |
2 |
3 |
1 |
2 |
|||
| Moropholine | 1 |
3 |
4 |
|||||
| Mustard Gas | 2 | 1 |
4 |
1 |
1 |
1 |