Description

C.I. Solvent Yellow 131 is a high-performance, oil-soluble azo dye widely used for its excellent coloring properties and stability in non-aqueous systems. This product is valued for its strong, bright yellow hue and its compatibility with a range of organic polymers and solvents, making it a critical component for achieving consistent coloration. It is primarily sought after by manufacturers in the plastics, ink, and coatings industries who require reliable and vibrant pigmentation for their products.

Application

• Coloration of engineering plastics and thermoplastic resins.
• Manufacturing of printing inks, particularly for packaging and publications.
• Pigmentation for industrial coatings, paints, and varnishes.
• Dyeing of synthetic fibers and waxes.
• Coloring agent for wood stains and polishes.
• Additive for coloring lubricating oils and greases.
• Used in the production of colored pencils and artist materials.
• Potential use as a marker or tracer dye in specialized applications.

Basic Information

Product Name	C.I. Solvent Yellow 131
CAS No.	71819-82-4
Molecular Formula	C24H21N5O2
Molecular Weight	411.46 g/mol
Synonyms	Solvent Yellow 131; Oil Yellow 131; C.I. 56200; 1,3-Benzenedicarbonitrile, 2-[[4-(phenylazo)phenyl]azo]-; 2-[[4-(Phenylazo)phenyl]azo]-1,3-benzenedicarbonitrile; Aizen SOT Yellow-1; Macrolex Yellow 131; Orasol Yellow 131; Plast Yellow 8350; Waxoline Yellow 3GP
EINECS	Contact for details

Quality Control

Our C.I. Solvent Yellow 131 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against stringent internal specifications, including color strength, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment to guarantee compliance with your technical requirements.

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.

Specification

Item	Specification
Appearance	Yellow to orange powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Solubility (in Toluene)	Clear, complete solution

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