Synonyms: Di Sodium Phosphate; Disodium Hydrogen Phosphate; Sodium Phosphate Dibasic; Phosphoric Acid, Disodium salt
Chemical formula: Na2HPO4&©|8226;12H2O
Molecular weight: 358.14
Standard executed: GB6008-85
CAS No.: 10039-32-4
H.S. Code: 28352200
Properties:
1. Appearance: white or colorless crystal;
2. Efflorescent in air;
3. Solubility: easily soluble in water, but insoluble in alcohol;
4. pH: its water solution is slightly alkaline;
5. Relative density: 1.63;
6. Melting point: 34.6 degree centigrade.
Technical Specifications:
1.Industrial grade:
(1)Main content: 97.0% min.
(2)P2O5: 19.2% min.
(3)pH of 1% water solution: 8.8-9.2
(4)Water insoluble: 0.10% max.
(5)Arsenic, as As: 0.005% max.
(6)Fluoride, as F: 0.05% max.
(7)Chloride, as Cl: 0.05% max.
(8)Sulfate, as SO4: 0.7% max.
2.Food grade:
(1)Main content: 97.0% min.
(2)P2O5: 19.4% min.
(3)pH of 1% water solution: 8.8-9.2
(4)Water insoluble: 0.05
(5)Arsenic, as As: 0.0003% max.
(6)Fluoride, as F: 0.002% max.
(7)Heavy metal, as Pb: 0.001% max.
(8)Chloride, as Cl: 0.14% max.
(9)Sulfate, as SO4: 0.25% max.
Applications:
1. Industrial grade: used as a fire-prevention agent for fabric, timber, and paper, also as water softening agent for boiler, buffering agent, solder, tanning agent, etc;
2. Food grade: mainly used as food additive.
Packaging: Plastic-woven sack with polythene inner bag. Net weight: 25kg, 50kg or 1000kg. Stored in ventilated and dry place.
|
Home
