Sichuan Shifang Yuecheng Phosphate Chemical Co.Ltd|

Tetro Sodium Pyrophosphate

/Tetro Sodium Pyrophosphate
Tetro Sodium Pyrophosphate 2015-11-19T15:57:39+00:00

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.


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.