Description

Solvent Red 135 is a high-performance, oil-soluble synthetic dye belonging to the anthraquinone class. This compound is valued for its excellent color strength, stability, and solubility in non-polar organic media, making it a critical component for imparting vibrant, durable coloration. It is primarily utilized by manufacturers in the plastics, printing inks, and specialty coatings industries who require consistent, high-quality pigments for their formulations.

Application

• Coloration of engineering plastics (e.g., ABS, polystyrene, polycarbonate) and synthetic fibers.
• Manufacturing of high-quality printing inks, including offset, flexographic, and gravure inks.
• Pigmentation for industrial coatings, automotive finishes, and wood stains.
• Coloring agent for waxes, greases, and lubricants for identification purposes.
• Tinting of solvent-based markers and specialty pens.
• Used in the production of colored masterbatches for plastic processing.

Basic Information

Product Name	Solvent Red 135
CAS No.	71902-17-5
Molecular Formula	C24H20N2O2
Molecular Weight	368.43 g/mol
Synonyms	1,4-Bis(butylamino)anthraquinone; C.I. Solvent Red 135; 1,4-Bis(n-butylamino)anthraquinone; Oil Red 5B; Ceres Red 5B; Anthraquinone Red 5B; 1,4-Di(butylamino)anthraquinone; 71902-17-5
EINECS	Contact for details

Quality Control

Our Solvent Red 135 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal specifications for critical parameters such as color strength, hue, and solubility. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance tests is available for every shipment to support your quality assurance protocols.

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 heat sources and incompatible materials. This product is light-sensitive and should be stored away from direct light exposure.

Specification

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

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