Description

Pigment Yellow 73 is a high-performance, diarylide-based organic pigment renowned for its bright, greenish-yellow hue and excellent color strength. It matters for its superior lightfastness, heat stability, and solvent resistance, making it a reliable and cost-effective colorant for demanding industrial applications. This pigment is essential for manufacturers in the plastics, coatings, and printing ink industries seeking vibrant, durable yellow coloration.

Application

• Plastics Coloring: Widely used for coloring polyolefins (PP, PE), PVC, and engineering plastics, offering excellent dispersion and heat stability during processing.
• Industrial Coatings: Imparts durable and weather-resistant yellow shades in automotive refinish, industrial maintenance, and decorative powder coatings.
• Printing Inks: A key pigment for producing vivid yellow tones in packaging gravure, flexographic, and publication inks.
• Masterbatch Production: Serves as a primary colorant in the manufacture of high-concentration color masterbatches for the plastics industry.
• Synthetic Fibers: Used in the mass coloration of fibers, providing good fastness properties.
• Rubber and Elastomers: Provides stable coloration for various rubber products.

Basic Information

Product Name	Pigment Yellow 73
CAS No.	13515-40-7
Molecular Formula	C34H28Cl2N6O4
Molecular Weight	647.53 g/mol
Synonyms	Pigment Yellow 73; C.I. Pigment Yellow 73; 13515-40-7; Diarylide Yellow AAA; AAA Yellow; Benzidine Yellow AAA; C.I. 11738; 3,3'-Dichlorobenzidine-4,4'-Di(acet-o-anisidide); Permanent Yellow AAA; Vulcan Fast Yellow A3R
EINECS	236-852-7

Quality Control

Our Pigment Yellow 73 is manufactured under a stringent quality management system. Every batch is tested against rigorous internal specifications to ensure consistent coloristic properties, chemical purity, and physical performance. A comprehensive Certificate of Analysis (COA) detailing parameters such as color strength, hue, particle size distribution, and residue content is provided to guarantee batch-to-batch consistency and compliance with your formulation 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. Due to its light-sensitive nature, prolonged direct exposure to light should be avoided to maintain optimal color properties.

Specification

Item	Specification
Appearance	Bright Greenish-Yellow Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Particle Size (D50)	Contact for details
Volatile Matter	≤ 2.0%
Residue on Sieve (63 µm)	≤ 0.1%
Lightfastness	6-7 (ISO 105-B02)
Heat Stability	200°C / 5 min
Identification (IR)	Conforms to Standard

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