|
Product name |
Sodium dihydrogen phosphate, dihydrate |
|
Specification |
Pharmaceutical grade (USP,BP,EP,CP) |
|
Molecular formula |
NaH2PO4·2H2O |
|
CAS |
13472-35-0 |
|
H.S. CODE |
2835220000 |
|
Molecular weight |
156.01 |
|
Appearance |
White crystal powder |
|
Package |
25KG Woven bags or fiber drums |
Property：
Colorless inclined FangJing crystallization, slightly hygroscopicity. Soluble in water, in a certain ph value, the sodium carbonate and phosphoric acid reaction or by disodium phosphate and a certain proportion of phosphoric acid reaction system in wet air easy agglomerate. Sealing preservation.
Application:
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
Test standard：
|
Test items |
Specification |
||
|
BP2015 |
USP35 |
CP2015 |
|
|
Appearance |
White crystal powder |
White crystal powder |
White crystal powder |
|
Assay |
98.0~100.5% |
98.0~100.5% |
98.0~100.5% |
|
pH |
4.2~4.5 |
|
4.2~4.5 |
|
Appearance of solution |
Conform |
|
Conform |
|
Insoluble matters |
|
≤0.4% |
|
|
Reducing substances |
Conform |
|
Conform |
|
Loss on dry |
21.5~24.0% |
18.5~21.5% |
21.5~24.0% |
|
Chloride |
≤0.02% |
≤0.06% |
≤0.02% |
|
Sulfate |
≤0.03% |
≤0.2% |
≤0.03% |
|
Iron |
≤0.001% |
≤0.001% |
≤0.001% |
|
Arsenic |
≤0.0002% |
≤0.0016% |
≤0.0002% |
|
Heavy metals |
≤0.001% |
≤0.002% |
≤0.001% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
