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Chemical formula: Na2HPO4·12H2O
Molecular weight: 358.14
Standard executed: GB6008-85
Properties: White or colorless crystal, efflorescent in air, easily soluble in water, but insoluble in alcohol, its water solution is slightly alkaline, relative density is 1.63, melting point is 34.6℃
Technical Specifications:
No | Specification | Industrial grade |
1 | Main content %≥ | 97.0 |
2 | P2O5 %≥ | 19.2 |
3 | pH of 1%watersolution | 8.8-9.2 |
4 | Chloride, as Cl %≤ | 0.05 |
5 | Sulfate, as SO4 %≤ | 0.7 |
6 | Fluoride, as F %≤ | 0.05 |
7 | Heavy metal, as Pb %≤ | - |
8 | Arsenic, as As %≤ | 0.005 |
9 | Water insoluble %≤ | 0.10 |
Applications: Used as a fire-prevention agent for fabric, timber, and paper, also as water softening agent for boiler, food additive, buffering agent, solder, tanning agent, and etc.
Packaging: Plastic-woven sack with polythene inner bag. Net weight: 25kg, 50kg or 1000kg. Stored in ventilated and dry place.