White powder , easily dissolve in water , not dissolve in ethanol

Molecular formula:Na4P2O7Molecular weight:265.90Properties:White powder , easily dissolve in water , not dissolve in ethanol , relative density is 2.45, melting point is 890°C, liquid is alkalescence , 1% , PH: 9.9-10.7.Quality index:

Item	Unit	Index
sodium pyrophosphate	%	96.5-100.5
Fluoride (as F)	ppm	≤ 50
As (as As)	ppm	≤ 3
Heavy metals(as Pb)	ppm	≤ 10
water insoluble matter	%	≤ 0.20
pH (1%Aq. solution)	-	9.9-10.7
Loss on ignition	%	≤ 0.50
Phosphate inspection	-	pass

Uses:

1,Widely used as detergent auxiliary , in industry, used to bleach papers , degrease wool and used in plating;

2,Used in foods as emulsifier, nutrition agent , quality modifier ,etc.

Tetrasodium pyrophosphate food grade