Description

Natural Iron Oxide CAS NO 1345-27-3 is a high-purity, naturally occurring inorganic pigment and functional additive. It is valued for its excellent color stability, chemical inertness, and non-toxic properties, making it a superior choice for applications requiring durability and safety. This product is essential for manufacturers in the construction, coatings, plastics, and ceramics industries seeking reliable, consistent, and cost-effective coloration and material enhancement.

Application

• Construction Materials: A key pigment for coloring concrete, paving stones, roofing tiles, and mortars, providing long-lasting, UV-resistant hues.
• Paints & Coatings: Used in industrial and architectural paints, primers, and anti-corrosion coatings for its opacity, weatherability, and tinting strength.
• Plastics & Polymers: Imparts stable color to PVC, polyolefins, and engineering plastics while also acting as a UV stabilizer and filler.
• Ceramics & Glass: Serves as a colorant in glazes, ceramic bodies, and specialty glass, offering high-temperature stability.
• Cosmetics (Color Additive): Approved for use in certain cosmetic applications (where compliant with local regulations like FDA D&C/CI 77491) such as eyeshadows and blushes.
• Animal Feed & Fertilizers: Utilized as a source of bioavailable iron in nutritional supplements for livestock and as a micronutrient in fertilizers.
• Magnetic Media & Toners: Employed in the production of ferrite magnets, magnetic recording media, and as a pigment in printing toners.
• Polishing Compounds: Acts as a fine abrasive in polishing powders for glass, metal, and stone.

Basic Information

Product Name	Natural Iron Oxide
CAS No.	1345-27-3
Molecular Formula	Fe₂O₃
Molecular Weight	159.69 g/mol
Synonyms	Ferric Oxide; Iron(III) Oxide; Red Iron Oxide; CI 77491; CI Pigment Red 101; CI Pigment Brown 6; Burnt Sienna; Indian Red; Hematite; Colcothar; Jeweler's Rouge; Venetian Red; Caput Mortuum
EINECS	215-168-2

Quality Control

Our Natural Iron Oxide is produced and tested under a stringent quality management system. We ensure compliance with relevant industry standards for purity, heavy metal content, and physical properties. Certificates of Analysis (COA) detailing lot-specific results for key parameters such as assay, sieve analysis, and soluble salt content are provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong acids and strong reducing agents. The product is not hygroscopic under normal conditions but should be protected from excessive moisture to prevent caking.

Specification

Item	Specification
Appearance	Red to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (as Fe₂O₃)	≥ 96.0 %
Loss on Drying (105°C)	≤ 1.0 %
Water Soluble Matter	≤ 0.5 %
pH (10% aqueous suspension)	5.0 - 7.0
Residue on Sieve (325 mesh)	≤ 0.5 %
Arsenic (As)	≤ 3 mg/kg
Lead (Pb)	≤ 20 mg/kg
Mercury (Hg)	≤ 1 mg/kg

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.