Description

Astra Blue CAS NO 12634-01-4 is a high-performance, synthetic ultramarine blue pigment known for its excellent color strength and stability. This inorganic pigment is valued for its non-toxic nature and superior resistance to heat, light, and weathering compared to many organic colorants. It is an essential raw material for manufacturers in the plastics, coatings, inks, and construction materials industries seeking vibrant, durable blue coloration.

Application

• Plastics and Masterbatch Coloration: Imparts a stable blue hue to polyethylene (PE), polypropylene (PP), PVC, and engineering plastics for consumer goods, packaging, and automotive parts.
• Industrial and Decorative Coatings: Used in powder coatings, architectural paints, and industrial finishes where lightfastness and chemical resistance are critical.
• Printing Inks: Provides vivid color for various printing applications, including packaging and publication inks.
• Construction Materials: Colors concrete, mortar, roofing granules, and other cementitious products for long-lasting visual appeal.
• Artists' Colors and Specialty Paints: A key component in high-quality artists' acrylics, oils, and watercolors due to its purity and color properties.
• Paper and Leather Coloring: Used in the surface coating and mass coloration of paper and leather goods.
• Cosmetics (where approved): Employed in certain cosmetic formulations, such as soaps and decorative cosmetics, subject to regional regulatory compliance.
• Toy and Food Contact Material Coloring: Suitable for applications requiring non-toxic pigments, contingent upon meeting specific purity and regulatory standards.

Basic Information

Product Name	Astra Blue
CAS No.	12634-01-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Ultramarine Blue; C.I. Pigment Blue 29; C.I. 77007; Synthetic Ultramarine; Ultramarine; French Ultramarine; Lapis Lazuli Substitute; Permanent Blue; Azure Blue; Pigment Blue 29
EINECS	235-741-6

Quality Control

Our Astra Blue is manufactured under a stringent quality management system. Every batch is tested to ensure consistent performance in color strength, hue, and physical properties. We provide comprehensive Certificates of Analysis (COA) detailing key specifications such as purity, sieve residue, and soluble matter content. Our production adheres to relevant ISO standards, and we can support compliance requirements for specific applications, including those for food contact materials and toys.

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 strong acids. The product is not hygroscopic under normal conditions but should be protected from prolonged exposure to high humidity to prevent caking.

Specification

Item	Specification
Appearance	Bright Blue Powder
Color Strength	≥ 98% (vs. Standard)
Hue	Conforms to Standard
Residue on Sieve (45μm)	≤ 0.5%
Water Soluble Matter	≤ 1.0%
Oil Absorption	30 - 40 g/100g
pH Value (10% Slurry)	6.5 - 8.5
Heat Stability	Stable up to 350°C
Lightfastness	8 (Blue Wool Scale)
Weathering Resistance	Excellent

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