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
|
|