Description

Sulphur Yellow 9 is a synthetic organic pigment belonging to the diarylide yellow chemical class, identified by CAS No. 12262-72-5. This high-performance pigment is valued for its excellent color strength, good lightfastness, and strong solvent resistance, making it a critical component for durable coloration. It is primarily needed by manufacturers in the plastics, inks, coatings, and synthetic fibers industries seeking vibrant, stable yellow hues.

Application

• Plastics Coloring: For coloring PVC, polyolefins, and engineering plastics, offering good heat stability and dispersion.
• Printing Inks: Used in solvent-based and publication gravure inks for packaging and commercial printing.
• Industrial Coatings: Imparts durable yellow color to automotive refinish, industrial maintenance, and coil coatings.
• Synthetic Fibers: Employed in the mass coloration of fibers like polypropylene and polyester.
• Masterbatch Production: A key pigment for creating concentrated color masterbatches for thermoplastics.
• Rubber Products: Suitable for coloring various rubber compounds.

Basic Information

Product Name	Sulphur Yellow 9
CAS No.	12262-72-5
Molecular Formula	C34H28Cl2N6O4
Molecular Weight	647.53 g/mol
Synonyms	Pigment Yellow 83; C.I. 21108; Diarylide Yellow HR; Permanent Yellow HR; Vulcan Fast Yellow 5G; Benzidine Yellow HR; 3,3'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-methyl-2-butanone]
EINECS	235-540-4

Quality Control

Our Sulphur Yellow 9 is manufactured under a stringent quality management system. Every batch undergoes comprehensive testing for colorimetric properties, purity, strength, and physical characteristics to ensure consistency and performance. Certificates of Analysis (COA) detailing all test results are provided with each shipment to guarantee compliance with your specifications.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow Powder
Identification (IR)	Conforms
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Residual Solvents	≤ 0.5%
Moisture Content	≤ 1.0%
Ash Content	≤ 1.0%
Particle Size (Hegman)	≥ 6.0
Lightfastness	≥ 6-7 (ISO 105-B02)
Heat Stability	≥ 200°C

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