| Appearance |
conforms |
| Identity |
conforms |
| Assay (Nitrogen, calc. on anhydrous substance) |
11.5 - 12.8 % |
| Appearance of solution (5 %; water) |
conforms |
| pH-value (5 %; water) |
3.0 - 5.0 |
| Heavy metals (as Pb) |
≤ 0.0010 % |
| Viscosity (calc. as k-value) |
22.5 - 27.0 |
| Aldehydes (calc. on CH₃CHO) |
≤ 0.0500 % |
| Peroxide (calc. as H₂O₂) |
≤ 0.0400 % |
| Formic acid |
≤ 0.5 % |
| related substances (Hydrazine) |
≤ 1 ppm |
| related substances (Vinyl pyrrolidone) |
≤ 10 ppm |
| related substances (2-Pyrrolidone*) |
≤ 3.0 % |
| Water |
≤ 5.0 % |
| Sulfated ash (600 °C) |
≤ 0.1 % |
| * Parameter tested by qualified laboratoryResidues of metal catalysts or metal reagents acc. to EMEA/CHMP/SWP/4446/2000 are not likely to be present. |
|
| Corresponds to Ph Eur , BP |
|
