Table 3 PMT scores of seven chemicals that have gained public attention over the past few years
Chemical name | CAS number | Usage | SVHC | PMT score | P score | M score | T score |
|---|---|---|---|---|---|---|---|
Trifluoroacetic acid (TFA) | 76-05-1 | Precursor to other fluorinated compounds, also used as a strong acid to remove t-butyl derived side-chain protecting groups. Persistent metabolite of substances that contain a trifluoromethyl functionality, f.e. a number of fluoro-coolants HFCs | – | 0.34 | 0.16 | 0.75 | 0.34 |
Perfluorooctanoic acid (PFOA) | 335-67-1 | Used in several applications, such as in firefighting foam and in coatings | SVHC | 0.60 | 0.99 | 0.36 | 0.61 |
Perfluorobutanesulfonic acid (PFBS) | 375-73-5 | Fluorosurfactant, used as replacement for PFOS | SVHC | 0.63 | 0.92 | 0.51 | 0.53 |
1,4-Dioxane | 123-91-1 | Solvent and stabiliser for the transport of chlorinated hydrocarbons in aluminium containers | SVHC | 0.38 | 0.09 | 0.73 | 0.84 |
Melamine (1,3,5-triazine-2,4,6-triamine) | 108-78-1 | Used in, for example, plastic dishware | –1 | 0.64 | 0.53 | 0.80 | 0.61 |
Methyl Tert-butyl Ether (MTBE) | 1634-04-4 | Additive for unleaded gasoline | – | 0.42 | 0.17 | 0.61 | 0.74 |
Glyphosate | 1071-83-6 | Active ingredient in herbicides and crop desiccant | – | 0.25 | 0.05 | 0.96 | 0.34 |
Perfluorheptanoic acid (PFHpA) | 375-85-9 | Used as a stain or water repellent | –1 | 0.63 | 0.98 | 0.42 | 0.61 |