Project Description
Sodium Pyrophosphate Anhydrous (TSPP)
Synonyms: tetrasodium pyrophosphate, sodium diphosphate, TSPP, sodium pyrophosphate, pyrophosphate sodium, tetrasodium diphosphate, tetra sodium pyrophosphate.
Molecular formula: Na4P2O7
Molecular Weight: 265.9
CAS Number: 7722-88-5
Properties: Sodium pyrophosphate tetrabasic anhydrous is white powder form; Easy to absorb moisture and deliquesce, but insoluble in ethanol; Relative density 2.45g/cm3 and melting point 890 ; Deliquescent in the open air. Its aqueous solution shows weak alkalinity but will be hydrolyzed into di-sodium phosphate when boiled.
Specifications:
Name | Industry grade | Food grade |
main assay (As Na4P2O7) %≥ | 96.5 | 96.5 |
Phosphorus pentoxide ( P2O5) %≥ | 51.5 | 51.5 |
Water insoluble matter %≤ | 0.20 | 0.20 |
PH value (1% solution ) | 9.9-10.7 | 9.9-10.7 |
n-phosphate | ok | ok |
Heavy metal (As Pb ) %≤ | 0.001 | |
Arsenic (As As ) %≤ | 0.0003 | |
Fluoride (As F ) %≤ | 0.005 | |
Fineness ( on 60 mesh screen ) %≥ | 90 | 90 |
Uses: used as auxiliary agent, degrease, plating, or used as buffer, emulsifier, nutritious agent and modifier.
Packing: Plastic bag, net weight 25kg, in dry and cool place.