Description

C.I. Solvent Yellow 40 is a high-purity, oil-soluble monoazo dye widely used for its excellent tinctorial strength and stability in non-aqueous systems. This product is essential for providing consistent, vibrant yellow coloration in a variety of industrial applications where solvent compatibility is paramount. It is a critical component for manufacturers in the plastics, coatings, and specialty ink industries seeking reliable and high-performance colorants.

Application

• Coloration of hydrocarbon-based solvents, fuels, and lubricants.
• Mass coloration of engineering plastics such as polystyrene (PS), polycarbonate (PC), and ABS.
• Manufacturing of specialty printing inks, including flexographic and gravure inks.
• Staining and identification of industrial oils and waxes.
• Production of colored lacquers and wood stains.
• As a colorant for synthetic fibers during melt spinning processes.

Basic Information

Item	Details
Product Name	C.I. Solvent Yellow 40
CAS No.	61813-78-3
Molecular Formula	C18H18N4O2
Molecular Weight	322.36 g/mol
Synonyms	Solvent Yellow 40; Oil Yellow 2G; C.I. 12700; 1,3-Benzenediol, 2,4-bis[(2-methylphenyl)azo]-; 2,4-Bis[(2-methylphenyl)azo]-1,3-benzenediol; Plast Yellow; Aizen SOT Yellow-4; Ceres Yellow GG
EINECS	Contact for details

Quality Control

Our C.I. Solvent Yellow 40 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Every lot is tested against stringent in-house specifications for color strength, solubility, and purity. A Certificate of Analysis (COA) detailing key parameters is provided with each shipment and is 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.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 98.0%
Solubility (in 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.