|
Product name |
Potassium dihydrogen phosphate |
|
Specification |
Pharmaceutical grade (USP,BP,EP,CP) |
|
Molecular formula |
KH2PO4 |
|
CAS |
7778-77-0 |
|
H.S. CODE |
2835240000 |
|
Molecular weight |
136.09 |
|
Appearance |
Colorless crystal |
|
Package |
25KG Woven bags or fiber drums |
Property：
Colorless sifang crystals or white crystalloid powder. The relative density 2.338. Melting point 252.6 ℃. Soluble in water (90 ℃ for improve g / 100ml canister water), become acidic aqueous solution, 1% linsuanerqingjia solution pH value is 4.6. Not soluble in alcohol. Have ChaoXie sex. Heating and 400 ℃ melted and transparent liquid, after cooling curing is not transparent glass shape partial potassium phosphate.
Application:
Analytics reagents, such as configuration standard solution, buffer a PH. Also used in the pharmaceutical industry, piezoelectric element and electric optical components production.
Test standard：
|
Test items |
Specification |
||
|
BP2015 |
USP35 |
CP2015 |
|
|
Appearance |
Colorless crystal |
Colorless crystal |
Colorless crystal |
|
Assay |
98.0~100.5% |
98.0~100.5% |
≥99.0% |
|
Appearance of solution |
Conform |
|
Conform |
|
pH |
4.2~4.5 |
|
4.2~4.5 |
|
Insoluble matters |
|
≤0.2% |
≤0.2% |
|
Reducing substances |
Conform |
|
Conform |
|
Loss on dry |
≤2.0% |
≤1.0% |
≤0.2% |
|
Chloride |
≤0.02% |
|
≤0.001% |
|
Fluoride |
|
≤0.001% |
|
|
Carbonate |
|
|
Conform |
|
Phosphate |
|
|
Conform |
|
Sulfate |
≤0.03% |
|
≤0.003% |
|
Arsenic |
≤0.0002% |
≤0.0003% |
≤0.001% |
|
Iron |
≤0.001% |
|
≤0.0002% |
|
Lead |
|
Conform |
|
|
Sodium |
≤0.1% |
|
|
|
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.
