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Disodium phosphate

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