Specification | GB 25565-2010 | FCC VII | ||
Assay
,w
/% ≥
|
Anhydrous (Ignited Basis, Na 3 PO 4 ) | 97.0 | 97.0 | |
Monohydrate (Ignited Basis, Na 3 PO 4 ) | ||||
Dodecahydrate(Ignited Basis, Na 3 PO 4 ) | 90.0 | |||
Heavy Metals (Pb), mg/kg ≤ | 10 | -- | ||
Pb, mg/kg ≤ | 4 .0 | 4 .0 | ||
Fluorides (F), mg/kg ≤ | 50 | 50 | ||
Insoluble Substances, ≤ w /% | 0.2 | 0.2 | ||
pH Value (10g/L) | 11.5-12.5 | -- | ||
As, mg/kg ≤ | 3 .0 | 3 .0 | ||
Loss of Ignition, w /% | ||||
Na 3 PO 4 ≤ | 2.0 | 2.0 | ||
Na 3 PO 4 ·H 2 O | 8 .0 -11 .0 | 8.0-11.0 | ||
Na 3 PO 4 ·12H 2 O | 45 .0 -57 .0 | 45.0-57.0 |