paint, coatin, contruction material, color cement, color bricks and roof tile, ,ink, rubber, plastic, etc. It’s very important Inorganic Color Pigments, which have minimal toxicity. The main varieties conclude Iron Oxide Red ( Fe2O3 ), Iron Oxide Yellow ( Fe2O3·H2O ), Iron Oxide Black ( Fe3O4 ). There is a high hiding power and coloring power. Do not dissolved in alkali and light-acid, but only ...
