Description

Solvent Red 25 is a synthetic organic dye belonging to the azo class, widely recognized for its vibrant red color and excellent solubility in non-polar organic media. This compound is valued for its strong tinting strength and stability in various formulations, making it a critical component for imparting color in industrial applications. It is primarily utilized by manufacturers in the plastics, ink, and coatings industries where consistent, high-performance coloration is required.

Application

• Primary colorant for plastics and synthetic fibers, including polyolefins and polystyrene.
• Manufacturing of printing inks, especially for packaging and specialty publications.
• Coloration of industrial coatings, lacquers, and wood stains.
• Used in the formulation of colored waxes, polishes, and candles.
• As a stain or marker in non-food contact industrial products and research applications.
• Potential use as a colorant for lubricants and greases for identification purposes.

Basic Information

Product Name	Solvent Red 25
CAS No.	3176-79-2
Molecular Formula	C22H18N4O2
Molecular Weight	370.41 g/mol
Synonyms	1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; C.I. Solvent Red 25; C.I. 26110; Oil Red 25; Azoic Red 25; Sudan Red 25; Ceres Red 25; 1-[(E)-[4-[(E)-Phenyldiazenyl]phenyl]diazenyl]naphthalen-2-ol
EINECS	221-656-5

Quality Control

Our Solvent Red 25 is produced under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters for color strength, purity, and solubility. A comprehensive Certificate of Analysis (COA) detailing these results is provided with every shipment to support your quality assurance protocols.

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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Red to dark red powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Solubility (Toluene)	Complete, clear 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.