| Artikel | USP | BP/EP |
| Identifikasi | Sesuai | |
| pH | 4.0-7.0 | |
| Air (%) | ≤ 5.0 | |
| residu pada pembakaran/abu sulfat%) | ≤ 0.1 | |
| Aldehid | ≤ 0,05% | 500 ppm |
| 2-Pyrrolidone ((%) | ≤3.0 | |
| Vinylpyrrolidinone ((%) | ≤ 0.001 | |
| Nilai K | 81-97.2 | 85-95 |
| Kandungan nitrogen ((%) | 11.5-12.8 | |
| Peroksida (ppm) | ≤ 400 | |
| Asam formik ((%) | ≤ 0.5 | |
| Hydrazine ((ppm) | ≤ 1 | |