Applications

In light sensitive reproductive papers.
As a colorant in ceramics.
As a mordant and oxidizing agent in textile dyeing and printing.
As a reagent for burnishing iron.
For giving a black antique finish to copper, coloring Zinc brown.
In nickel plating baths, in aluminum brightners.
In wood preservatives, As fungicides, herbicides.
In pyrotechnic compositions.
As a catalyst component in solid rocket fuel.
As a nitrating agent, as a catalyst in organic reactions.