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Tetra Sodium Pyrophosphate
Molecular formula:Na4P2O7
Molecular weight:265.90
CAS No.:7722-88-5
Property:White powder, easily soluble in water, density at 2.45, melting point at 890℃, its water solution is alkaline, PH value in 1% solution is 9.9~10.7
Usage:Mainly used as detergent in washing, bleach in paper-making, and electroplating, etc. For food grade it is mainly used as food additive, buffering agent, emulsification agent, and nourishment, and modifying agent, etc.
Packing:Net in 25KG Plastic Woven Bag
Specification:


Specifications

Tech grade

Food grade

Main assay (As Na4P2O7)

96.5% min

96.5% min

Phosphorus pentoxide ( P2O5)

51.5% min

51.5% min

Water insoluble matter

0.20% max

0.20% max

PH value of 1% solution

9.9-10.7

9.9-10.7

Heavy metals as Pb

------

0.001%max

Arsenic as As

------

0.0003%max

Fluoride (As F )

------

0.005%max