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.