Iron Blue

Name:
Iron Blue
Detailed information:
A pigment (of which there are several varieties) prepared by precipitating ferrous ferrocyanide from a solution of ferrocyanide and ferrous sulfate. Subsequent oxidation produces a complex ferriferrocyanide whose shade and pigment properties are dependent upon the oxidizing agent, reactant concentrations, pH, temperature, size of batch, and other conditions of manufacture. Common oxidants are nitric acid, sulfuric acid, potassium dichromate with sulfuric acid, perchlorates, and peroxides.

Properties:

Insoluble in water, oils, alcohol, hot paraffin, organic solvents; unaffected by dilute acids. Unstable to alkalies of all concentrations or reducing media. Resistant to light and ordinary baking temperatures.

Use:

Paints, printing inks, plastics, cosmetics (eye shadow), artist colors, laundry blue, paper dyeing, fertilizer ingredient, baked enamel finishes for autos and appliances, industrial finishes.