Items
Indexconform to HG/T 3662-2000
Appearance
Colorless or light yellow transparent liquid
Active acid (as PBTCA)% ≥
50.0
Phosphorous acid(as PO33-)% ≤
0.5
Phosphoric acid (asPO43- )% ≤
0.2
Density (20℃) g/cm3 ≥
1.270
pH(1% solution)
1.5 - 2.0
Chloride (as Cl-) μg/g ≤
10
Iron ( as Fe2+ ) μg/g ≤