|
chentianfang at brightcn.net
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
|
≤ 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.
Packing: plastic lined woven bag, net wt 25KG or 50KG, kept in dry and ventilating place. |
