ITEM | STANDARD |
Appearance | White to cream colored powder |
Purity (dry basis, %) | >= 70 |
Viscosity (2%, 25℃, mPa.s ) | 50 - 100 |
Degree of substitution | 0.5 - 0.8 |
pH (1% solution) | 7.0- 9.0 |
Loss on drying (%) | =< 10 |
Lead | =< 5 mg/kg |
Arsenic | =< 3 mg/kg |
Total heavy metals (as Pb) | =< 20 mg/kg |