Description

Zinc Ferrite Brown Spinel CAS NO 68187-51-9 is a high-performance, inorganic mixed metal oxide pigment renowned for its exceptional thermal stability and chemical inertness. This compound is critical for applications requiring durable, non-fading coloration under extreme conditions. It is primarily utilized by manufacturers in the ceramics, plastics, coatings, and construction materials industries seeking superior, long-lasting pigmentation.

Application

• Ceramic Glazes and Bodies: Imparts stable brown hues in sanitaryware, tiles, and tableware fired at high temperatures.
• Engineering Plastics and Masterbatches: Provides heat-stable coloring for automotive components, electrical casings, and other technical polymers.
• High-Temperature Paints and Coatings: Used in industrial coatings for machinery, exhaust systems, and appliances where color must withstand heat.
• Construction Materials: Colors concrete, roofing tiles, and paving stones with excellent UV and weather resistance.
• Specialty Glass and Enamels: Acts as a colorant in glass batches and vitreous enamels for architectural and decorative glass.
• Magnetic Materials: Serves as a component in certain soft ferrite cores for electronics, leveraging its spinel structure.

Basic Information

Product Name	Zinc Ferrite Brown Spinel
CAS No.	68187-51-9
Molecular Formula	ZnFe₂O₄
Molecular Weight	241.07 g/mol
Synonyms	Zinc Iron Oxide; Brown Spinel Pigment; Zinc Ferrite Black; Iron Zinc Oxide; Zinc Diferrate; CI 77496; Pigment Brown 33; Ferro Zinc Spinel
EINECS	Contact for details

Quality Control

Our Zinc Ferrite Brown Spinel is manufactured under strict quality control protocols to ensure batch-to-batch consistency and performance. Production adheres to relevant industrial standards, with key parameters including color value, particle size distribution, and chemical purity rigorously tested. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment.

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 strong acids and strong oxidizing agents. The product is not hygroscopic under normal storage conditions.

Specification

Item	Specification
Appearance	Fine Brown Powder
Identification (XRD)	Conforms to ZnFe₂O₄ Spinel Structure
Assay (as ZnFe₂O₄)	≥ 98.0 %
Particle Size (D50)	1.0 - 3.0 µm
Oil Absorption	15 - 25 g/100g
pH (10% slurry)	6.0 - 8.0
Loss on Ignition (1000°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.