|
Product name |
Sodium pyrophosphate decahydrate |
|
Specification |
Food grade |
|
Molecular formula |
Na4P2O7·10H2O |
|
CAS |
13472-36-1 |
|
H.S. CODE |
2835299000 |
|
Molecular weight |
377.0875 |
|
Appearance |
Colorless transparent 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： GB 25557-2010
|
Test items |
Specification |
|
Food grade |
|
|
Appearance |
Colorless transparent crystal |
|
Assay |
≥98.0% |
|
Total phosphate |
Conform |
|
pH |
9.9~10.7 |
|
Water insoluble |
≤0.2% |
|
Residue on ignition |
38.0~42.0% |
|
Fluoride |
≤50 mg/kg |
|
Arsenic |
≤3 mg/kg |
|
Lead |
≤4 mg/kg |
|
Heavy metals |
≤10 mg/kg |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
