Specification | GB 25564-2010 | FCC VII | ||
Content (On Dry Basis),w/% | 98.0-103.0 | 98-103.0 | ||
PH(10g/L,25℃) | 4.1-4.7 | ———— | ||
Insoluble Substances,w/% ≤ | 0.2 | 0.2 | ||
Heavy Metal(As Pb),mg/kg ≤ | 10 | ———— | ||
Lead(Pb),mg/kg ≤ | 4 | 4 | ||
Arsenic(As),mg/kg ≤ | 3 | 3 | ||
Fluorides (As F),mg/kg ≤ | 50 | 50 | ||
Loss On Drying,w/% | NaH2PO4 ≤ | 2.0 | 2.0 | |
NaH2PO4·H2O | 10.0-15.0 | 10.0-15.0 | ||
NaH2PO4·2H2O | 20.0-25.0 | 20.0-25.0 |