|
Items |
Standards | ||
|
Super grade |
First grade |
Quality product | |
|
Purity,% |
96min |
90min |
85min |
|
Content of P2O5,% |
57.0max |
56.5max |
55.0max |
|
Water insoluble,% |
0.10max |
0.10max |
0.15max |
|
Iron,% |
0.007max |
0.015max |
0.030max |
|
PH value |
9.2-10.0 | ||
|
Whiteness,% |
90max |
80max |
70max |
|
Retained on 1.00mm mesh |
5.0max | ||
