Test | Specification | Results |
Appearance | White crystaler | Conforms |
Identification | HPLC conform | Conforms |
Loss on drying | ≤0.5% | 0.24% |
Viscosity (20r/min, 25’C, mPa.s)0.2% aqueous solution0.5% aqueous solution | 19,000-35,00040,000-70,000 | 2325060000 |
Residue on ignition | ≤0.2% | 0.06% |
Solution clarity (420nm, %)0.2% aqueous solution | 85min | 94 |
Residual benzene | 0.5% max | 0.31% |
Residual acrylic acid | 0.25% max | 0.092% |
Packing density (g/100ml) | 21.0-27.0 | Conforms |
Heavy metals | 10ppm max | Conforms |
Total impurities(HPLC) | ≤ 1.0% | Conforms |
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