Tetra Sodium Pyrophosphate

Standard executed: HG/T2968-1999(Technical Grade), GB8848-88(Food Grade)

Advantages

White powder; Soluble in water but insoluble in ethanol; Relative density 2.45g/cm3 and melting point 890degree; Deliquescent in the open air. Its aqueous solution shows weak alkalinity and is stable at 70 degree, but will be hydrolyzed into di-sodium phosphate when boiled.

Transportation Information

DOT Classification:	Not a DOT controlled material.
U.N.	Not applicable.

Chemical Analysis

Component	Industrial Grade	Food Grade
Assay(as Na4P2O7)%	96.5 min	96.5 min
PH value	9.9-10.7	9.9-10.7
P2O5 %	51.5 min	51.5 min
Ortho Phosphates	pass	pass
Water Insoluble matter %	0.20 max	0.20 max
Size (through 60mesh sieve)	90	90
Fluoride (as F)		0.005 max
Heavy Metals (as Pb)		0.001 max
As		0.0003 max
L.O.I. %		0.50 max