Description

Disperse Red 91 is a high-performance, synthetic organic dye belonging to the anthraquinone class. It is valued for its excellent color fastness, thermal stability, and bright red hue, making it a critical component in demanding coloration processes. This product is essential for manufacturers in the textile and specialty plastics industries seeking durable and vibrant coloration solutions.

Application

• Textile Dyeing: Primarily used for dyeing hydrophobic fibers like polyester, acetate, and nylon, offering excellent wash and light fastness.
• Plastics Coloring: Employed as a colorant for engineering plastics, synthetic fibers, and films where high-temperature processing stability is required.
• Ink Formulation: Used in the production of specialty inks for various printing applications, including transfer printing.
• Automotive Interiors: Suitable for coloring synthetic fabrics and plastic components used in vehicle upholstery and trim.
• Sportswear Fabric: Ideal for synthetic athletic apparel due to its durability and resistance to sweat and repeated washing.
• Industrial Yarn: Applied in the coloration of high-tenacity yarns used in ropes, belts, and other industrial textiles.

Basic Information

Product Name	Disperse Red 91
CAS No.	12236-10-1
Molecular Formula	C₂₀H₁₃NO₄
Molecular Weight	331.32 g/mol
Synonyms	1-Amino-4-hydroxy-2-phenoxy-9,10-anthracenedione; C.I. 60745; Disperse Red 91; Solvent Red 111; 9,10-Anthracenedione, 1-amino-4-hydroxy-2-phenoxy-; 1-Amino-4-hydroxy-2-phenoxyanthraquinone; Fenalan Red B; Artisil Red 2B
EINECS	235-428-3

Quality Control

Our Disperse Red 91 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested for critical parameters including color strength, shade, particle size distribution, and dispersion stability. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your specifications.

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. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size	> 95% passes 80 mesh
Dispersion Stability	Stable

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