| ITEM | STANDARD | |
| Appearance | White to cream colored powder | |
| Degree of substitution | >= 0.8 | |
| pH (1% solution) | 6.0- 8.5 | |
| Loss on drying (%) | =< 10 | |
| Water loss (ml) | 40% salt water | =< 10 |
| Apparent Viscosity (mPa.s) | Distilled water | >= 30 |
| 4% salt water | >= 30 | |
| 40% salt water | >= 30 | |
| Total heavy metals (as Pb) | =< 20 mg/kg | |