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, colouring Zinc brown. In nickel plating baths, in aluminium 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.
