Description

Iron Oxide Black is a high-purity, inorganic pigment and functional material with the chemical formula Fe₃O₄, also known as magnetite. It is valued for its intense black color, excellent chemical stability, UV resistance, and magnetic properties, making it a critical component in numerous industrial formulations. This product is essential for manufacturers in the construction, coatings, plastics, and advanced materials sectors seeking durable coloration and specific functional performance.

Application

• Construction Materials: A key pigment for coloring concrete, paving stones, roofing tiles, and mortar, providing long-lasting, weather-resistant black hues.
• Paints & Coatings: Used in industrial paints, automotive coatings, marine paints, and anti-corrosion primers for its tinting strength, opacity, and weatherability.
• Plastics & Polymers: Imparts a stable black color to masterbatches, engineering plastics, films, and synthetic fibers while offering good dispersion and heat stability.
• Magnetic Inks & Toners: Serves as the magnetic component in security printing, magnetic stripe cards, and specific toner formulations for photocopiers and laser printers.
• Ceramics & Glass: Acts as a coloring agent in ceramic glazes, porcelain, and specialty glass, yielding stable black and gray shades under high firing temperatures.
• Electronic Materials: Utilized in the production of ferrites, magnetic recording media, and as a raw material in certain catalytic processes.

Basic Information

Item	Detail
Product Name	Iron Oxide Black
CAS No.	1309-38-2
Molecular Formula	Fe₃O₄
Molecular Weight	231.53 g/mol
Synonyms	Magnetite; Black Iron Oxide; Ferrosoferric Oxide; Iron(II,III) Oxide; C.I. Pigment Black 11; Magnetic Iron Oxide; Triiron Tetraoxide; Eisen(II,III)-oxid (German); Oxyde de fer noir (French)
EINECS	215-169-8

Quality Control

Our Iron Oxide Black is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality parameters including color strength, particle size distribution, chemical purity, and magnetic properties are rigorously tested. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee compliance with your application requirements.

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. The product is stable under normal storage conditions.

Specification

Item	Specification
Appearance	Fine black powder
Identification (IR)	Conforms to standard
Assay (as Fe₃O₄)	≥ 96.0 %
Color Strength (vs. Std.)	95 - 105 %
Oil Absorption	15 - 25 g/100g
Residue on Sieve (325 mesh)	≤ 0.5 %
Water Soluble Matter	≤ 0.5 %
pH Value (10% slurry)	5.0 - 8.0
Loss on Drying (105°C)	≤ 1.0 %

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