Description

Cobalt Silicate CAS NO 12643-13-9 is an inorganic compound valued for its unique color and chemical stability. It serves as a critical inorganic pigment and colorant, providing durable blue and violet hues in high-temperature applications. This material is essential for manufacturers in the ceramics, glass, and specialty coatings industries seeking consistent, fade-resistant coloration.

Application

• Ceramic Glazes and Pigments: Imparts stable blue and violet colors to porcelain, tiles, and sanitaryware.
• Glass Coloring: Used in the production of colored glass for decorative, architectural, and specialty glassware.
• High-Temperature Coatings: A key component in coatings for metals and ceramics that must withstand extreme heat.
• Artists' Colors: Employed in the formulation of high-quality, permanent artists' paints and ceramic underglazes.
• Construction Materials: Provides coloration to concrete, paving stones, and other cementitious products.
• Plastic and Masterbatch: Acts as a colorant for engineering plastics requiring heat stability.
• Catalyst and Catalyst Support: Used in certain chemical synthesis and catalytic processes.
• Research & Development: Serves as a starting material or reference standard in material science research.

Basic Information

Product Name	Cobalt Silicate
CAS No.	12643-13-9
Molecular Formula	Co2SiO4 / CoO·SiO2
Molecular Weight	209.95 g/mol (for Co2SiO4)
Synonyms	Cobalt(2+) silicate; Cobalt orthosilicate; Cobalt blue (pigment); Thenard's blue; Cobalt monosilicate; Cobaltous silicate; CI Pigment Blue 28; CI 77346
EINECS	235-747-2

Quality Control

Our Cobalt Silicate is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Quality parameters including color value, chemical purity, particle size distribution, and heavy metal content are rigorously tested. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee 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. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Blue to violet-blue powder
Identification (XRD)	Conforms to structure
Assay (as Co2SiO4)	≥ 95.0 %
Particle Size (D50)	1 - 10 µm (customizable)
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Water Soluble Matter	≤ 0.5 %
Oil Absorption	Contact for details

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