Description

Solvent Yellow 157 is a high-performance, oil-soluble organic dye belonging to the azo class of colorants. This product is valued for its excellent solubility in non-polar media, providing strong and stable coloration in a variety of industrial applications. It is primarily used by manufacturers in the plastics, inks, coatings, and specialty chemical industries seeking reliable and consistent pigmentation. The compound is supplied as a fine powder, ensuring ease of handling and dispersion.

Application

• Primary colorant for the mass coloration of olefin polymers, including polypropylene (PP) and polyethylene (PE).
• Coloring agent for solvent-based inks, particularly for packaging and publication gravure printing.
• Pigment for industrial coatings, lacquers, and wood stains where oil solubility is required.
• Coloring of waxes, greases, and lubricants for identification and aesthetic purposes.
• Dye for specialty chemicals and masterbatches used in plastic fiber and film production.
• Tinting of hydrocarbon-based fuels and solvents for safety and brand identification.

Basic Information

Product Name	Solvent Yellow 157
CAS No.	27908-75-4
Molecular Formula	C24H30N4O2
Molecular Weight	406.53 g/mol
Synonyms	Solvent Yellow 157; C.I. 13981; 1,3-Benzenedicarboxamide, N1,N3-bis(2,4-dimethylphenyl)-2-(phenylazo)-; Oil Yellow 157; Azo Yellow 157; Plastic Yellow 157; N1,N3-Bis(2,4-dimethylphenyl)-2-(phenylazo)-1,3-benzenedicarboxamide
EINECS	Contact for details

Quality Control

Our Solvent Yellow 157 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent in-house specifications for color strength, hue, solubility, and purity. A comprehensive Certificate of Analysis (COA) detailing assay, identification, and impurity profiles 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. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 5% (vs. Standard)
Solubility (in Toluene)	Complete, clear solution
Moisture Content (KF)	≤ 1.0%
Ash Content	≤ 0.5%

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