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Product name
Tetrasodium pyrophosphate, decahydrate
Specification
Reagent 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
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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
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Test items |
Specification |
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AR grade |
CP grade |
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Appearance |
Colorless transparent crystal |
Colorless transparent crystal |
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Assay |
≥99.0% |
≥97.0% |
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Appearance of solution |
Conform |
Conform |
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Water insoluble |
≤0.005% |
≤0.01% |
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Chloride |
≤0.001% |
≤0.003% |
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Sulfate |
≤0.025% |
≤0.050% |
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Phosphate |
≤0.3% |
≤0.3% |
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Iron |
≤0.001% |
≤0.003% |
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Arsenic |
≤0.00005% |
≤0.0002% |
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Heavy metals |
≤0.001% |
≤0.002% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
