Description

Sulphur Yellow 9 is a synthetic organic pigment belonging to the diarylide yellow chemical class, identified by CAS No. 1326-40-5. This high-performance pigment is valued for its excellent color strength, good lightfastness, and strong solvent resistance, making it a reliable and cost-effective coloring agent. It is primarily needed by manufacturers in the plastics, inks, coatings, and synthetic fiber industries seeking vibrant, durable yellow hues for their products.

Application

• Plastics Coloring: Widely used for mass coloration of polyolefins (PP, PE), PVC, polystyrene, and engineering plastics, offering good heat stability and dispersion.
• Printing Inks: A key pigment for offset, gravure, and flexographic inks, providing clean, opaque yellow shades with good printability.
• Industrial Coatings: Employed in air-dry and baked finishes for industrial machinery, agricultural equipment, and automotive refinishes.
• Synthetic Fibers: Used in the spin-dyeing process for synthetic fibers like polypropylene and polyamide to achieve colorfast yellow tones.
• Masterbatch Production: An essential component for creating high-concentration color masterbatches used across the plastics industry.
• Rubber Products: Suitable for coloring various rubber compounds where color consistency and stability are required.

Basic Information

Product Name	Sulphur Yellow 9
CAS No.	1326-40-5
Molecular Formula	C₃₂H₂₆Cl₂N₆O₄
Molecular Weight	629.49 g/mol
Synonyms	Pigment Yellow 14; C.I. 21095; Diarylide Yellow AAA; Benzidine Yellow AAA; Permanent Yellow G; Vulcan Fast Yellow G; 3,3'-Dichlorobenzidine Diarylide Pigment; 1326-40-5
EINECS	215-406-5

Quality Control

Our Sulphur Yellow 9 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality parameters including color strength, shade, particle size distribution, and chemical purity are rigorously tested against established internal specifications. Certificates of Analysis (COA) detailing these results are available upon request 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 strong oxidizing agents. For long-term storage, ensure the original packaging remains sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Yellow Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 5% (vs. Std.)
Hue	Within agreed tolerance
Moisture Content	≤ 2.0%
Residue on Sieve (63 µm)	≤ 1.0%
Specific Gravity	~1.35 - 1.45 g/cm³
Oil Absorption	40 - 60 g/100g

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