Specification :

Molecular formula: Na4P2O7
Molecular weight: 265.90
Properties:
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 d 50
As ( as As) ppm d 3
Heavy metals( as Pb) ppm d 10
water insoluble matter % d 0.20
pH ( 1% Aq. solution) - 9.9-10.7
Loss on ignition % d 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.
Packing: plastic lined woven bag, net wt 25KG or 50KG, kept in dry and ventilating place.