Specification Hg2789-1996 Fcc-iv
Appearance
White crystalline powder, free-flowing, nothing stimulating odor
Content¿as ca 34.0-40.0 34.0-40.0
Arsenic ín0.0003 ín0.0003
Fluorine ín0.0003 ín0.0075
Heavy metals(as pb) ín0.002 ín0.0015
Lead í¬ ín0.0005
Weight loss on heating(200íµ) ín10.0 í¬
Weight loss on ignition¿800íµ í¬ ín10.0
Clarity ¿slightly turbid.
English HG2919-2000 FCC1996
Assay(NaH2PO4 ),% 98.0-103.0 98.0-103.0
pH-value (10g/L solution) 4.2-4.6 --
Insoluble in water, í_% 0.2 0.2
Heavy Metal(Pb), í_% 0.001 10mg/kg
As, í_% 0.0003 3mg/kg
Chlorides (F), í_% 0.005 0.005
Loss on drying
NaH2PO4 í_%
NaH2PO4 .H2O,%
NaH2PO4 . 2H2O,% 2.0 2.0
10.0-15.0 10.0-15.0
20.0-25.0 20.0-25.0.
25kg/bag woven bag.
