No.	Index	Industrial grade	Food grade
1	Main content  %≥	99.0	99.0
2	P2O5   %≥	53.0	53.0
3	Nitrogen, as N %≥	20.8	20.8
4	pH of 1% water solution	7.8-8.2	7.8-8.2
5	Moisture %≤	0.15	0.15
6	Heavy metal, as Pb %≤	-	0.001
7	Arsenic, as As %≤	-	0.0003
8	Fluoride ,as F %≤	-	0.002
9	Water insoluble %≤	0.10	0.10

Application: As a fire-prevention agent for fabric, timber and paper. For food grade , it is mainly used as a fermentation agent, nourishment, and so on. Used as a high effective non-chloride N, P compound fertilizer in agriculture. It contains totally 74% fertilizer elements (N+P₂O₅), used as a basic raw material for N, P and K compound fertilizer.
Packaging: packed in plastic woven bag with PE lining, 25kgs/bag. Stored in ventilated and dry place.