Parameters |
Unit |
Food Standard |
Appearance |
/ |
White crystal powder |
Main contents,as NH₄H₂PO₄ |
≥% |
99.0 |
Nitrogen, as N |
≥% |
11.8 |
Phosphorus pentoxide, as P₂O₅ |
≥% |
61.0 |
Moisture |
≤% |
0.2 |
pH |
10G/L |
4.0-5.0 |
Water insoluble |
≤% |
0.1 |
Heavy metals(as Pb) |
≤ppm |
10.0 |
Arsenic(As) |
≤ppm |
3.0 |
Fluoride(F) |
≤ppm |
10.0 |
Plumbum(Pb) |
≤ppm |
2.0 |
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