Specifications	Industrial Grade	Food Grade
Main Content (Na5P3O10) % ≥	90	90
Phosphorous Pentoxide (P2O5) % ≥	57	57.5
Water Insoluble % ≤	0.10	0.05
Iron (Fe) % ≤	0.007	0.007
PH of (1% water solution)	9.2-10.0	9.5-10.0
Heavy metals (as Pb) % ≤	---	0.001
Arsenic (as As) % ≤	---	0.0003
Fluoride (as F) % ≤	---	0.003
Particle Size % ≥	95	95
Whiteness % ≥	90	90