Description

Solvent Red 149 is a high-performance, oil-soluble red dye belonging to the anthraquinone chemical class. This product is valued for its excellent color strength, superior lightfastness, and exceptional solubility in a wide range of non-polar organic solvents and polymers. It is primarily used by manufacturers in the plastics, coatings, and specialty ink industries who require stable and vibrant coloration for their formulations. The compound is also known under the CAS registry number 21295-57-8.

Application

• Plastics Coloring: A key colorant for engineering plastics (e.g., ABS, PS, PC) and polyolefins, providing vivid red hues with good thermal stability during processing.
• Industrial Coatings and Paints: Used in solvent-based systems for automotive refinish, industrial maintenance paints, and decorative coatings due to its excellent solubility and durability.
• Specialty Inks: Formulated into flexographic, gravure, and screen printing inks for packaging and specialty applications where color consistency is critical.
• Wax and Grease Markers: Imparts a strong, non-bleeding color to marking crayons, lubricating greases, and sealing waxes.
• Wood Stains and Polishes: Provides deep, penetrating color in oil-based wood stain formulations and furniture polishes.
• Cosmetic Pigments (for non-FDA regulated items): Used in the coloration of certain cosmetic products like soaps and theatrical makeup where oil solubility is required.

Basic Information

Product Name	Solvent Red 149
CAS No.	21295-57-8
Molecular Formula	C24H20N2O2
Molecular Weight	368.43 g/mol
Synonyms	1,4-Bis(pentylamino)anthraquinone; C.I. Solvent Red 149; Oil Red 5B; Anthraquinone Red R; Ceres Red 5B; Fat Red 5B; Solvent Red R; 1,4-Bis(amylamino)anthraquinone
EINECS	244-310-6

Quality Control

Every batch of Solvent Red 149 is manufactured and tested under a strict quality management system to ensure consistent performance. Our products undergo rigorous quality testing to ensure compliance with industry standards. Key parameters such as color strength, hue, solubility, and purity are verified against established specifications. Certificates of Analysis (COA) detailing all test results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Dark red powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 5% (vs. Standard)
Hue	Conforms to standard
Purity (HPLC)	≥ 98.0%
Solubility (in Toluene)	Clear, complete solution
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%

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