Description

Pigment Yellow 81 is a high-performance, diarylide-based organic pigment renowned for its brilliant greenish-yellow hue and excellent color strength. This pigment matters for its superior durability, offering excellent lightfastness, heat stability, and resistance to solvents, making it a reliable choice for demanding applications. It is primarily needed by manufacturers in the plastics, printing inks, coatings, and masterbatch industries seeking vibrant and stable yellow coloration.

Application

• Plastics Coloring: Widely used for coloring PVC, polyolefins (PP, PE), and engineering plastics, offering excellent dispersion and heat stability during processing.
• Printing Inks: A key component in solvent-based, water-based, and offset printing inks, providing high tinctorial strength and print clarity.
• Industrial Coatings: Imparts durable and weather-resistant yellow colors in automotive, industrial, and decorative paint systems.
• Masterbatch Production: Used as a high-strength colorant in the manufacture of color concentrates for the plastics industry.
• Textile Printing: Employed in pigment printing pastes for fabrics, valued for its brightness and wash fastness.
• Specialty Applications: Suitable for coloring synthetic fibers, leather finishes, and stationery products.

Basic Information

Product Name	Pigment Yellow 81
CAS No.	22094-93-5
Molecular Formula	C36H32Cl4N6O4
Molecular Weight	726.49 g/mol
Synonyms	Pigment Yellow 81; C.I. 21127; Diarylide Yellow AAA; Benzidine Yellow AAA; 3,3'-Dichlorobenzidine Diarylide Pigment; Yellow 81; Permanent Yellow AAA; 1,1'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-2-oxoacetamide]
EINECS	244-776-4

Quality Control

Our Pigment Yellow 81 is manufactured under a strict quality management system to ensure batch-to-batch consistency. Quality is verified through comprehensive testing of key parameters including color strength, hue, particle size distribution, and rheological properties. Certificates of Analysis (COA) detailing these specifications are available for every shipment 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 strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Standard
Volatile Matter (105°C)	≤ 2.0%
Water Soluble Matter	≤ 1.5%
pH Value (Aqueous Extract)	6.0 - 8.0
Particle Size (D50)	Contact for details
Lightfastness	≥ 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.