Description

Chromium Iron Oxide CAS NO 12737-27-8 is an inorganic mixed metal oxide pigment, also known as chrome iron brown or chromium ferrite. This compound is valued for its excellent thermal stability, chemical inertness, and durable coloration properties. It is primarily utilized as a high-performance pigment in industries requiring long-lasting, weather-resistant, and non-fading colorants.

Application

• High-Temperature Pigments: For coloring ceramics, porcelain enamels, and construction materials like concrete and roofing tiles.
• Coatings and Paints: Used in industrial, marine, and automotive coatings where UV resistance and durability are critical.
• Plastics and Polymers: As a colorant for engineering plastics and masterbatches that require processing at elevated temperatures.
• Construction Materials: Pigmentation of paving stones, bricks, and other cement-based products.
• Cosmetic Colorants: In certain cosmetic formulations where inorganic pigments are specified for their stability.
• Magnetic Materials: As a component in the production of certain ferrite magnets and recording media.

Basic Information

Product Name	Chromium Iron Oxide
CAS No.	12737-27-8
Molecular Formula	Fe₂CrO₄ / Fe₂O₃·Cr₂O₃ (mixed oxide)
Molecular Weight	Contact for details
Synonyms	Chrome Iron Brown; Chromium Ferrite; Iron Chromium Oxide; C.I. Pigment Brown 29; Chrome Iron Oxide; Ferrochromium Oxide; Chromium Iron(III) Oxide; Iron Chromite
EINECS	235-796-1

Quality Control

Our Chromium Iron Oxide is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for key parameters including color value, particle size distribution, chemical composition, and impurity levels to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) are available upon request.

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. The product is generally stable under recommended storage conditions.

Specification

Item	Specification
Appearance	Brown powder
Identification (XRD)	Complies
Assay (as Cr₂O₃ + Fe₂O₃)	≥ 98.0 %
Color Strength	± 5% vs. Standard
Particle Size (D50)	0.5 - 2.0 µm
Oil Absorption	15 - 25 g/100g
Water Soluble Matter	≤ 0.5 %
pH (10% slurry)	5.0 - 8.0
Loss on Drying (105°C)	≤ 1.0 %
Heavy Metals (as Pb)	≤ 50 ppm

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