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 Chemical formula:Na2HPO4·12H2O
Molecular weight:358.14
Properties:White or colorless flow granular crystal, efflorescence in air, soluble in water easily, Sg 1.52, Melting point
35.1°C.
Uses: Used as fire-extinguishing agent for fabric, woods, paper; as soft water agent for boilers; dye auxiliary, as food
additive, acidity buffer, welding agent, plating, tannage, and in the making of pyrophosphate.
Packing: plastic lined woven bag, Net wt 25 Kg, kept in dry and ventilating place.
Technical index
NO. |
Index name |
Industrial grade |
Food grade |
1 |
Main content (Na2HPO4·12H2O) %= |
98.0 |
98.0 |
2 |
PH value of 1% solution |
9±0.2 |
9±0.2 |
3 |
Sulfate(as SO4 ) %= |
1.2 |
1.2 |
4 |
Chloride(as CI) %= |
0.05 |
0.02 |
5 |
Fluoride(as F) %= |
0.1 |
0.005 |
6 |
Heavy metals(as Pb) Pb %= |
____ |
0.001 |
7 |
As %= |
____ |
0.0003 |
8
|
Water insoluble matter %= |
0.10 |
0.10 |
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