 |
1. Purity: above 99% pure
2. Optical rotation index:
3. Water content: less than 0.3%
4. Chlorides: less than 0.02% (as Cl)
5. Heavy metal: less than 10 ppm (mainly as Pb)
6. Arsenic: less than 1 ppm (as As2O3)
7. Sulphates : less than 0.03% (as SO4) |
