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Sodium pyrophosphate Tetrasodium Diphosohate CAS:7722-88-5
Name: Sodium pyrophosphate
Synonyms: Tetrasodium Diphosohate
CAS:7722-88-5
MF: Na4P2O7
Item | Technical grade | Food grade |
---|---|---|
Appearance | White powder or granule | White powder or granule |
Assay (Na4P2O7) % | ≥97 | ≥96.5 |
Iron (Fe) % | ≤0.005 | / |
Heavy metal (as Pb) % | ≤0.002 | / |
Arsenic (As) % | ≤0.0005 | ≤0.0003 |
Lead (Pb) % | ≤0.0002 | |
Fluoride (F) % | ≤0.002 | ≤0.001 |
pH (1% sol.) | 9.9-10.7 | 9.9-10.7 |
Water insoluble % | ≤0.1 | ≤0.1 |
Loss on ignition % | ≤0.5 | ≤0.5 |
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