White or colorless crystal shaped as running sand, effloresce in air easily, soluble in water easily, insoluble in alcohol, water solution is alkalescenty, decomposed to be Sodium pyrophosphate on 250°C, specific weight is 1.52, melting point is 35.1°C.
Technical Specifications:
SPECIFICATIONS
INDUSTRIAL GRADE
FOOD GRADE
1
Main content(as Na2HPO4.12H2O)
≥
97
98
2
PH of 1% water solution
≤
8.8-9.2
8.8-9.2
3
Sulfate, as SO4
≤
0.7
0.25
4
Chloride, as CI
≤
0.05
0.03
5
Heave metals, as Pb
≤
0.01
0.001
6
Fluoride, as F
≤
0.05
0.005
7
Arsenic, as As
≤
0.0005
0.0003
8
Water insoluble
≤
0.05
0.2
9
Drying loss(Na2HPO4)
≤
5.00
(Na2HPO4.2H2O)
%
18.0-22.0
Na2HO2.12H2O
%≤
61
Use:
As fire-proof agent for fabric, woods and paper, as water-softening agent for boiler, as dyeing assistant, food additive, acidity buffer, andmanufacturing pyrophosphate for glaze, welding agent, baking powder, electroplating, tannage and so on.
Packing
Plastic knit bag, Net weight 25kg or 50kg. Storage in ventilated and dry place.
