Description

Pigment Red 166 is a high-performance, organic monoazo pigment known for its excellent color strength and durability. This product is valued for its strong tinting power, good lightfastness, and resistance to heat and solvents, making it a reliable choice for demanding applications. It is primarily used by manufacturers in the plastics, coatings, and printing ink industries seeking a vivid, stable red hue.

Application

• Plastics Coloring: For coloring polyolefins (PP, PE), PVC, ABS, and engineering plastics, offering good dispersion and heat stability during processing.
• Industrial Coatings: Used in automotive finishes, industrial paints, and powder coatings where weather resistance and color consistency are critical.
• Printing Inks: An essential component for high-quality offset, gravure, and flexographic inks, providing sharp print quality and color fidelity.
• Masterbatch Production: A key pigment for creating color concentrates and masterbatches used in bulk plastic manufacturing.
• Synthetic Fibers: For mass coloration (dope dyeing) of fibers, ensuring excellent wash and light fastness.
• Rubber and Elastomers: Imparts stable coloration to rubber products, footwear, and other elastomeric materials.

Basic Information

Product Name	Pigment Red 166
CAS No.	71819-52-8
Molecular Formula	C26H21ClN4O5S
Molecular Weight	537.0 g/mol
Synonyms	C.I. Pigment Red 166; C.I. 20730; Benzenesulfonamide, N-(5-chloro-2,4-dimethoxyphenyl)-4-[[5-[(diethylamino)sulfonyl]-2-methoxyphenyl]azo]-3-hydroxy-2-naphthalenecarboxamide; Pigment Scarlet 3R; Permanent Red FGR; Cromophtal Red 2030; Irgazin Red 2030; Novoperm Red FGR
EINECS	Contact for details

Quality Control

Our Pigment Red 166 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. We adhere to relevant industry standards, and all shipments are accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as color strength, hue, and purity. Our quality commitment ensures the pigment meets the specifications required for your formulations.

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 and sources of ignition.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Residual Moisture	≤ 2.0%
Water Soluble Matter	≤ 1.5%
Particle Size (D50)	Contact for details
Heat Stability	≥ 200°C
Lightfastness	≥ 7 (ISO 105-B02)
Migration Resistance	Excellent

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