Description

Pigment Yellow 191:1 is a high-performance, green-shade diarylide yellow pigment. This specific grade, Pigment Yellow 191:1 CAS NO 154946-66-4, is valued for its excellent lightfastness, heat stability, and chemical resistance, making it a reliable choice for demanding applications. It is primarily used by manufacturers in the plastics, coatings, and printing ink industries seeking durable and vibrant yellow coloration.

Application

• Plastics Coloring: For coloring a wide range of polymers, including polyolefins (PP, PE), PVC, and engineering plastics, offering good dispersion and heat stability during processing.
• Industrial Coatings: Used in coil coatings, automotive refinishes, and industrial paints where durability and weather resistance are critical.
• Printing Inks: Formulated into solvent-based, water-based, and publication gravure inks, providing strong color strength and print performance.
• Masterbatch Production: A key component for creating high-concentration color masterbatches used in plastic extrusion and molding.
• Synthetic Fibers: For mass pigmentation of synthetic fibers such as polypropylene, ensuring colorfastness.
• Specialty Applications: Suitable for use in artists' colors and other specialty applications requiring a stable, greenish-yellow hue.

Basic Information

Product Name	Pigment Yellow 191:1
CAS No.	154946-66-4
Molecular Formula	C36H32Cl2N6O4
Molecular Weight	699.59 g/mol
Synonyms	Pigment Yellow 191:1; C.I. Pigment Yellow 191:1; Diarylamide Yellow HR; Permanent Yellow HR; Yellow Pigment 191:1; 2,2'-[[3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl]bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutanamide]; Benzanilide, 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxo-
EINECS	Contact for details

Quality Control

Our Pigment Yellow 191:1 is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including color strength, hue, particle size distribution, and chemical purity to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) documenting these specifications are 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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Greenish Yellow
Lightfastness	7-8 (ISO 105-B02)
Heat Stability	280°C (5 min)
Oil Absorption	40 - 50 g/100g
Residual Solvents	< 0.5%
Particle Size (D50)	0.2 - 0.4 μm

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