No.	Index	Industrial Grade	Food grade
1	Main content  %≥	98. 0	98. 0
2	P2O5      %≥	19. 2	19. 4
3	pH of 1% water solution	8. 8-9. 2	9. 0-9. 4
4	Chloride, as Cl % ≤	0. 05	0. 014
5	Sulfate, as SO4  % ≤	0. 7	0. 25
6	Fluoride, as F % ≤	0. 05	0. 002
7	Heavy metal, as Pb % ≤	-	0. 001
8	Arsenic, as As % ≤	0. 005	0. 0003
9	Water insoluble % ≤	0. 10	0. 05

Applications: Used as a fire-prevention agent for fabric, timber, and paper, also as water softening agent for boiler, food additive, buffering agent, solder, tanning agent, and etc.

Packaging: 25kg/50kg in plastic woven bag with PE lining. Stored in ventilated and dry place.