Description

Disperse Blue 91 is a high-performance anthraquinone-based disperse dye, recognized for its excellent color fastness and thermal stability. It is a critical component for achieving deep, vibrant blue shades with superior wash and light fastness properties in synthetic textiles. This product is essential for manufacturers in the polyester and acetate fiber industries seeking reliable and consistent coloration for apparel, home furnishings, and technical textiles.

Application

• Primary dyeing of polyester fibers and fabrics for apparel and sportswear.
• Coloration of cellulose acetate and triacetate fibers.
• High-temperature dyeing processes for automotive textiles and upholstery.
• Transfer printing applications for synthetic fabrics.
• Production of colored polyester yarns for industrial sewing threads.
• Dyeing of polyester-cotton and other synthetic blend fabrics.
• Manufacture of home textiles such as curtains and drapes requiring light fastness.
• Potential use in the coloration of certain plastics.

Basic Information

Product Name	Disperse Blue 91
CAS No.	12222-89-8
Molecular Formula	C20H13NO5
Molecular Weight	347.32 g/mol
Synonyms	1,4-Bis(methylamino)anthraquinone; C.I. Disperse Blue 91; Disperse Navy Blue S-2GL; Samaron Navy Blue HGL; Foron Navy S-2GL; Dianix Navy Blue N; Terasil Navy Blue GRL; 1,4-Bis[(methyl)amino]-9,10-anthracenedione
EINECS	Contact for details

Quality Control

Our Disperse Blue 91 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested for critical parameters including color strength, shade, dispersion stability, and particle size distribution. Certificates of Analysis (COA) documenting purity, physical properties, and application performance are available upon request to support your quality assurance protocols.

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. The product is light-sensitive; prolonged exposure to direct light should be avoided to maintain color integrity.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Dispersion Stability	Passes Test
Particle Size	> 95% below 2 microns

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