Description

Cobalt Blue CAS NO 1345-16-0 is a high-performance, inorganic blue pigment renowned for its exceptional color strength and stability. This compound is a critical material for industries requiring durable, vibrant, and heat-resistant blue coloration. It is primarily utilized in the manufacturing of ceramics, specialty plastics, high-performance coatings, and artist's pigments.

Application

• Ceramics and Glass: As a stable colorant for glazes, porcelain, and decorative glass, providing intense blue hues that withstand high firing temperatures.
• Plastics and Polymers: For coloring engineering plastics, masterbatches, and synthetic fibers where thermal stability and UV resistance are required.
• Paints and Industrial Coatings: Used in high-temperature paints, automotive coatings, and protective industrial finishes for its excellent weatherability and chemical inertness.
• Artist's Colors: A key pigment in the formulation of high-quality oil paints, acrylics, and watercolors for professional artists.
• Construction Materials: Incorporation into colored concrete, roofing tiles, and architectural panels for long-lasting color.
• Specialty Inks: For security printing and other specialty ink applications demanding high color fidelity and durability.

Basic Information

Product Name	Cobalt Blue
CAS No.	1345-16-0
Molecular Formula	CoAl₂O₄
Molecular Weight	176.89 g/mol (for CoAl₂O₄)
Synonyms	Cobalt Aluminate Blue; Cobalt Blue Pigment; CI Pigment Blue 28; Thenard's Blue; Azure Blue; Cobalt Ultramarine; King's Blue; Cobalt Aluminate Spinel; CoAl2O4
EINECS	215-723-5

Quality Control

Our Cobalt Blue is manufactured under strict quality control protocols to ensure batch-to-batch consistency in color, particle size, and chemical composition. We adhere to relevant industry standards for pigment manufacturing. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics 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 incompatible materials. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Fine blue powder
Identification (IR)	Conforms to Cobalt Aluminate structure
Color Strength	Standard ± 5%
Purity (as CoAl₂O₄)	≥ 98.0 %
Particle Size (D50)	0.5 - 2.0 µm
Oil Absorption	25 - 35 g/100g
pH (10% Slurry)	7.0 - 9.0
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.