Iron Oxide Brown

Iron Oxide BrownIt is an important inorganic pigment with stable chemical properties, widely used. The following provides a detailed introduction from aspects such as basic characteristics, preparation methods, application fields, safety, and environmental protection.

I. Basic Characteristics

• Chemical Composition: The main component is iron oxide (a mixture of Fe₂O₃ and FeO), which may contain a small amount of crystalline water. The molecular formula can be expressed as (Fe₂O₃ + FeO)·nH₂O.

• Physical PropertiesBrown powder, fine-grained, with strong covering and coloring power, and good dispersibility.

• Chemical PropertiesInsoluble in water, alcohol, and ether; however, soluble in hot concentrated acids. Excellent light and weather resistance; no water or oil penetration. Color can vary with processing, presenting shades of yellow-brown, red-brown, black-brown, etc.

Section II: Preparation Method

• Ferrous sulfate oxidation methodFerrous sulfate reacts with pure soda, then it is washed, filtered, dried, crushed, and mixed to obtain the product.

• Mechanical blending methodComposed of iron oxide red, iron oxide yellow, and iron oxide black, mechanically blended.

• Other methodsSynthesis of ferric oxide brown via methods such as low heavy metal liquid-phase oxidation and energy-saving, environmentally friendly preparation methods, achieved by controlling reaction conditions.

Section 3: Application Fields

• Paints and ConstructionFor colored cement, tiles, tiles, imitation tiles, concrete tiles, mortar, asphalt, terrazzo, mosaic tiles, artificial marble, and wall painting, to enhance decorative effects.

• Rubber and PlasticAs a coloring agent, offers stable color and weather resistance.

• Paints and inksUsed for printing inks, paper, cardboard, and packaging materials, to produce color effects.

• CosmeticsSuitable for manufacturing foundation cream and other cosmetics, offering lubricity and breathability.

Section 4: Safety & Environmental Protection

• Toxic protective measuresExposure to dust can cause pneumoconiosis. The maximum permissible concentration of iron oxide aerosol (dust) is 5mg/m³. Dust protection measures must be taken.

• Environmental RequirementsWith stricter environmental regulations, certain production processes require optimization to reduce pollution, such as using energy-saving and environmentally friendly preparation methods, and reducing wastewater generation.

V. Storage, Transportation, and Packaging

• Storage and Transportation ConditionsStore in a dry place, avoid high temperatures and moisture, and keep away from acidic and alkaline substances. The shelf life of unpackaged products is three years.

• Packaging SpecificationsTypically packed in 25 kg/bag, with outer woven and inner plastic, ensuring product stability.