Iron Oxide Brown

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

I. Basic Features

• Chemical CompositionThe 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 represented as (Fe₂O₃ + FeO)·nH₂O.

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

• Chemical PropertiesInsoluble in water, alcohol, and ether; however, soluble in hot strong acid. Excellent lightfastness and weather resistance; no water or oil渗透. Color can range from yellow-brown, red-brown, to black-brown, depending on the process.

II. Preparation Method

• Ferrous sulfate oxidation methodFerrous sulfate reacts with pure sodium carbonate, and is then processed through water washing, filtration, drying, crushing, and blending to obtain the final product.

• Mechanical blending methodComposed of mechanical blending of ferric oxide red, ferric oxide yellow, and ferric oxide black.

• Other methodsSynthesis of ferric oxide brown through controlled reaction conditions, utilizing methods such as liquid-phase low heavy metal oxidation and energy-saving, environmentally-friendly preparation techniques.

Section 3: Application Fields

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

• Rubber & PlasticAs a pigment, it 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 and Environmental Protection

• Toxic protective gearInhalation of dust may cause pneumoconiosis. The maximum permissible concentration of iron oxide aerosol (dust) is 5mg/m³. Dust prevention measures must be taken.

• Environmental RequirementsWith stringent environmental regulations, some production processes require optimization to reduce pollution, such as adopting energy-saving and environmentally friendly preparation methods and reducing the generation of wastewater.

V. Storage, Transportation, and Packaging

• Storage and Shipping 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 SpecificationsPackaged typically in 25 kg bags, with outer woven and inner plastic lining to ensure product stability.