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Quick Details
Specifications
Molecular Formula:Na2HPO4
Molecular Weight:358.14
CAS NO.: 7558-79-4
Standard: HG/T2965-2000(T.G),HG2920-2000(F.G)
Properties:
White powder, the melting point is 190 centigrade. It is soluble in water showing acidity. It decompounds sodium pyrophosphate anhydrous at 225-250 centigrade, and becomes sodium metaphosphate at 350-400 centigrade. It is slightly hygroscopic.
Usage: For boiler water treatment, electroplating, leather, BeiFen,fuel additives,detergent, mica tulameen close, acidic slow agent etc, also be preparing sodium hexametaphosphate and polycondensation chromate salt of raw material
Standard:
|
Index |
Industrial Grade |
Food grade |
|
Main content %≥ |
97.0 |
98.0 |
|
P2O5 %≥ |
19.2 |
19.4 |
|
pH of 1% water solution |
8.8-9.2 |
9.0-9.4 |
|
Chloride, as Cl % ≤ |
0.05 |
0.014 |
|
Sulfate, as SO4 % ≤ |
0.7 |
0.25 |
|
Heavy metal, as Pb % ≤ |
- |
0.001 |
|
Arsenic, as As % ≤ |
0.005 |
0.0003 |
|
Fluoride, as F % ≤ |
0.05 |
0.002 |
|
Water insoluble % ≤ |
0.10 |
0.05 |