Ferric Nitrate is Colorless or yellowish monoclinic crystals,it can be prepared by reacting iron or iron oxide with nitric acid.

TEST ITEM STANDARD Test Result
Purity   as   [Fe(NO₃)₃ ·9H₂O],% ≥98.0 98.35
Water Insoluble,% ≤0.05 0.002
Chloride(Cl),% ≤0.005 0.001
Sulfate  (SO₄),% ≤0.05 0.005
Copper(Cu),% ≤0.005 0.001
Manganese (Mn),% ≤0.005 0.0015

It is used as mordant for dyeing, weight gaining agent for silk, corrosion inhibitor, metal surface treatment agent and tanning leather.