| Article | USP | BP/EP. |
| Identification | Conforme | |
| pH | 4.0-7.0 | |
| Eau (%) | ≤5.0 | |
| Résidus au feu/Cendres sulfatées (%) | ≤0,1 | |
| Aldéhydes | ≤0,05% | 500 ppm |
| 2-pyrrolidone (%) | ≤3,0 | |
| Vinylpyrrolidinone(%) | ≤0,001 | |
| Valeur K | 81-97.2 | 85-95 |
| Teneur en azote (%) | 11,5-12,8 | |
| Peroxydes (ppm) | ≤400 | |
| Acide formique (%) | ≤0,5 | |
| Hydrazine (ppm) | ≤1 | |