Product name |
Tetrasodium pyrophosphate, decahydrate |
Specification |
Food grade |
Molecular formula |
Na4P2O·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.