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                Specification  | GB 25568-2010  | FCC VII  | |
Content Na2HPO4,( On Dry Basis),w/%≥  | 98.0  | 98.0  | |
Arsenic(As),mg/kg ≤  | 3  | 3  | |
Heavy Metal (As Pb),mg/kg ≤  | 10  | ————  | |
Lead(Pb),mg/kg ≤  | 4  | 4  | |
Fluorides(As F),mg/kg ≤  | 50  | 50  | |
Insoluble Substances,w/% ≤  | 0.2  | 0.2  | |
Loss On Drying,w/%  | Na2HPO4 ≤  | 5.0  | 5.0  | 
Na2HPO4·2H2O  | 18.0-22.0  | 18.0-22.0  | |
Na2HPO4·12H2O ≤  | 61.0  | ————  | |