CAS No.: 10101-89-0
H.S. Code: 28352910
Properties:
1. Appearance: white or colorless crystals;
2. Efflorescent in air;
3. Solubility: easily soluble in water but not in organic solution;
4. pH: water solution is alkaline, and pH value of 1% solution is 12.1;
5. Relative density: 1.62;
6. Melting point: 73.4 degree centigrade.

Technical Specifications:
1.Industrial grade:
(1)Main content: 98.0% min.
(2)P2O5: 18.3% min.
(3)Sodium oxide, as Na2O: 15.5-19.0%
(4) Sulfate, as SO4: 0.5% max.
(5)Water insoluble: 0.1% max.
(6)Chloride, as Cl: 1.5% max.
2.Food grade:
(1)Main content: 98.0% min.
(2)P2O5: 18.3% min.
(3)Sodium oxide, as Na2O: 15.5-19.0%
(4)Sulfate, as SO4: 0.5% max.
(5)Water insoluble: 0.05% max.
(6)Arsenic, as As: 0.0003% max.
(7)Fluoride, as F: 0.002% max.
(8)Heavy metal, as Pb: 0.001% max.
(9) Chloride, as Cl: 0.3% max.