Usage:It is mainly used as detergent, electroplating etc. For food grade it is mainly used as food additive, nourishment etc.
Specification:
Item
|
Specification
|
Sodium pyrophosphate Na4P2O7 %
|
96.5-100.5
|
Water-insoluble constituents %
|
Max. 0.20
|
pH (1% aqueous solution)
|
9.9 -10.7
|
Arsenic (As) mg/kg
|
Approx. 2
|
Heavy Metal (as Pb) mg/kg
|
Approx. 6
|
Fluoride (as F) mg/kg
|
Approx. 15
|
Loss on Ignition %
|
Max. 0.50
|
Orthophosphate
|
Passed test
|
Chromium (Cr) mg/kg
|
Max 1
|
Nickel (Ni) mg/kg
|
Max 1
|
Cadmium (Cd) mg/kg
|
Max 1
|
Lead (Pb) mg/kg
|
Max 1
|