no. |
standard name |
industrial grade |
food grade |
1 |
main content(as nh4h2po4)%≥ |
99.0 |
99.0 |
2 |
phosphorus pent-oxide(as p2o5)%≥ |
61.0 |
61.0 |
3 |
nitrogen(as n)%≥ |
11.8 |
11.8 |
4 |
ph value |
4.4-4.8 |
4.4-4.8 |
5 |
moisture%≤ |
0.2 |
0.2 |
6 |
heavy metal(as pb)%≤ |
|
0.001 |
7 |
arsenic(as)%≤ |
|
0.0003 |
8 |
fluoride(as f)%≤ |
|
0.005 |
9 |
water insoluble %≤ |
0.10 |
0.10 |
used to manufacture phosphate in medical or food industry.
used as a high effective k and p compound fertilizer. it contains totally 86% fertilizer elements, used as a basic raw material for n, p and k compound fertilizer. it can be used on fruit, vegetables, cotton and tobacco, tea and economic crops, to improve product quality, and greatly increase the production.