No	name of index	tech grade	food grade
1	.total phosphate (as P2O5)%≥	68.0	68.0
2	inactive phophate(as P2O5)% ≤	7.5	7.5
3	.iron(as Fe) % ≤	0.05	0.05
4	PH(1% water solution)	5.8-7.3	5.8-6.5
5	solubility	pass	pass
6	.heavy metal % ≤		0.001
7	asennic（as As）% ≤		0.0003
8	fluoride(as F) % ≤		0.003
9	water insoluble % ≤	0.05	0.06