1,FeCl3% min 40 2,Molecular weight : 162.21 3,Package : ... .3. Specification : Technical indexFCS-3FeCl3%≥40Density (20°C), g/cm3≥1.43FeCl2, %≤0.4Non-soluble in water, %≤0.5Free acid (HCl ... ) %≤0.5Cu, %≤0.1Zn, %≤0.1Cr, %≤0.1Pb, %≤0.1 40% Yellow Ferric chloride solution