| ITEM | STANDARD |
| Appearance | White to cream colored powder |
| Purity (dry basis, %) | >= 99.5 |
| Viscosity (1%, 25℃, mPa.s ) | 1500- 2000 |
| Degree of substitution | 0.7 - 0.9 |
| pH (1% solution) | 6.0- 8.5 |
| Loss on drying (%) | =< 10 |
| Sulphated ash (%) | 23 - 27 |
| Lead | =< 3 mg/kg |
| Arsenic | =< 2 mg/kg |
| Mercury | =< 1 mg/kg |
| Cadmium | =< 1 mg/kg |
| ?Total heavy metals (as Pb) | =< 10 mg/kg |
| Total plate count (cfu/g) | =< 1000 |
| Yeast and mould (cfu/g) | =< 100 |
| Coliform | Negative |
| Salmonella | Negative |