| Artikel | USP | BP/EP |
| Identifikation | Konform | |
| pH-Wert | 4,0-7,0 | |
| Wasser (%) | ≤5.0 | |
| Glührückstände/Sulfatasche(%) | ≤0,1 | |
| Aldehyde | ≤0,05 % | 500 ppm |
| 2-Pyrrolidon (%) | ≤3,0 | |
| Vinylpyrrolidinon (%) | ≤0,001 | |
| K-Wert | 81-97,2 | 85-95 |
| Stickstoffgehalt (%) | 11,5-12,8 | |
| Peroxide (ppm) | ≤400 | |
| Ameisensäure (%) | ≤0,5 | |
| Hydrazin (ppm) | ≤1 | |