Description

Cobalt(Iii) Oxide Black is a high-purity inorganic compound, also known as cobalt sesquioxide or cobalt black. This material is a critical precursor and functional component valued for its thermal stability, catalytic properties, and distinctive black coloration. It is essential for manufacturers and R&D facilities in sectors requiring advanced ceramic materials, catalysts, and pigments. Our supply ensures consistent quality and reliable global availability for industrial-scale operations.

Application

• Ceramics & Glass Manufacturing: As a colorant and flux agent to produce stable blue and black glazes, enamels, and specialty glass.
• Catalyst Production: Serving as a key component or precursor in catalysts for oxidation reactions, petrochemical processing, and automotive exhaust systems.
• Battery Technology: Used in the synthesis of cathode materials, such as lithium cobalt oxide, for lithium-ion batteries.
• Pigments & Inks: Providing a durable, heat-stable black pigment for plastics, paints, coatings, and ceramic inks.
• Electronic Components: Utilized in the production of ferrites, semiconductors, and varistors due to its electrical properties.
• Chemical Synthesis: Acting as an oxidizing agent or a starting material for producing other cobalt salts and compounds.

Basic Information

Product Name	Cobalt(Iii) Oxide Black
CAS No.	1308-04-9
Molecular Formula	Co2O3
Molecular Weight	165.86 g/mol
Synonyms	Cobalt Sesquioxide; Cobalt Black; Cobalt(3+) Oxide; Dicobalt Trioxide; Cobaltic Oxide; Cobalt Oxide Black; Zaffre; CI 77322
EINECS	215-157-2

Quality Control

Our Cobalt(Iii) Oxide Black is manufactured under a stringent quality management system. Each batch is analyzed to ensure it meets precise chemical and physical specifications, including purity, particle size, and heavy metal content. Certificates of Analysis (COA) documenting these parameters are provided with every shipment to guarantee traceability and compliance with your technical 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 and strong reducing agents. The container must be kept tightly sealed to minimize exposure to moisture and atmospheric contaminants.

Specification

Item	Specification
Appearance	Black powder
Identification (IR)	Conforms
Assay (Co2O3)	≥ 99.0%
Particle Size (D50)	1-5 µm
Loss on Ignition	≤ 1.0%
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.02%
Heavy Metals (as Pb)	≤ 0.005%

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