Description

Ci 744 CAS NO 37291-85-3 is a high-purity inorganic pigment, specifically a complex inorganic colorant based on cobalt and aluminum oxides. This compound is valued for its exceptional thermal stability, chemical inertness, and vibrant blue hue, making it a critical component for demanding industrial applications. It is primarily sought after by manufacturers in the ceramics, plastics, coatings, and specialty glass industries who require durable, non-fading coloration under extreme conditions.

Application

• Ceramic Glazes and Bodies: Imparts stable blue coloration in porcelain, sanitaryware, and tiles fired at high temperatures.
• Engineering Plastics and Masterbatches: Used for coloring high-performance polymers like polyamide (PA) and polycarbonate (PC) that undergo high-temperature processing.
• Industrial and Decorative Coatings: Provides durable, weather-resistant blue pigments for powder coatings, coil coatings, and automotive finishes.
• Specialty Glass and Enamels: Acts as a colorant in borosilicate glass, art glass, and vitreous enamel applications.
• Construction Materials: Used in colored concrete, roofing granules, and other building materials requiring UV stability.
• Artist Colors: A key pigment in high-quality, lightfast artists' paints and inks.

Basic Information

Item	Detail
Product Name	Ci 744 CAS NO 37291-85-3
CAS No.	37291-85-3
Molecular Formula	CoAl₂O₄
Molecular Weight	176.89 g/mol
Synonyms	Cobalt Aluminate Blue; Cobalt Blue; Thenard's Blue; CI Pigment Blue 28; Azure Blue; Cobalt Spinel; Cobalt Aluminum Oxide; Ultramarine Blue (inorganic pigment context)
EINECS	253-428-8

Quality Control

Our Ci 744 is manufactured under a rigorous quality management system. Each batch is tested to ensure compliance with critical parameters such as color strength, particle size distribution, chemical purity, and thermal stability. Certificates of Analysis (COA) documenting these specifications are available upon request. We adhere to relevant industry standards to ensure batch-to-batch consistency for our global clientele.

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 the container tightly sealed to prevent moisture absorption and contamination from other materials.

Specification

Item	Specification
Appearance	Fine Blue Powder
Identification (IR)	Conforms to Standard
Assay (as CoAl₂O₄)	≥ 98.0 %
Particle Size (D50)	0.5 - 2.0 µm
Oil Absorption	25 - 35 g/100g
Loss on Drying (105°C)	≤ 0.5 %
Water Soluble Matter	≤ 0.3 %
Heavy Metals (as Pb)	≤ 20 ppm

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