Description

C. I. Pigment Blue 30 (77420) is a high-performance, inorganic pigment based on a complex cobalt aluminate spinel structure. This compound is valued for its exceptional thermal stability, chemical inertness, and vibrant, durable blue coloration. It is primarily sought after by manufacturers in the ceramics, plastics, and coatings industries who require a pigment that maintains its integrity under harsh processing and environmental conditions. CAS NO 166733-69-3.

Application

• Ceramic Glazes and Bodies: Imparts stable blue colors in sanitaryware, tiles, and tableware fired at high temperatures.
• Engineering Plastics and Masterbatches: Used for coloring polyolefins, nylons, and other polymers that undergo high-temperature processing.
• Industrial and High-Temperature Coatings: A key pigment in coil coatings, powder coatings, and automotive paints requiring weatherability and heat resistance.
• Construction Materials: Coloring agent for concrete, roofing granules, and other mineral-based products.
• Specialty Glass and Enamels: Provides consistent blue coloration in glass batches and porcelain enamels.
• Artists' Colors: Used in high-grade artists' paints (e.g., ceramic paints, acrylics) for its permanence and color strength.

Basic Information

Product Name	C. I. Pigment Blue 30 (77420)
CAS No.	166733-69-3
Molecular Formula	CoAl₂O₄
Molecular Weight	176.89 g/mol (for CoAl₂O₄)
Synonyms	Cobalt Blue; Cobalt Aluminate Blue; Thenard's Blue; Azure Blue; CI 77346; Pigment Blue 28; Cobalt Spinel Blue; King's Blue; Dresden Blue; Zaffre
EINECS	Contact for details

Quality Control

Our C. I. Pigment Blue 30 is manufactured under strict process controls to ensure batch-to-batch consistency in color, particle size, and chemical composition. Quality is verified against key parameters including color value, residue on sieve, and specific gravity. Certificates of Analysis (COA) detailing these specifications are available upon request.

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 product is stable under normal storage conditions.

Specification

Item	Specification
Appearance	Fine blue powder
Color Strength	Standard (vs. reference)
Particle Size (Hegman)	> 6.0
Residue on Sieve (325 mesh)	< 0.5%
Oil Absorption	30 - 45 g/100g
Specific Gravity	3.8 - 4.2
pH (10% slurry)	7.0 - 9.0
Heat Stability	> 1000°C

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