Description

Disperse Blue 81 is a high-performance anthraquinone-based disperse dye widely recognized for its excellent color fastness and thermal stability. Its primary value lies in providing a brilliant and durable blue coloration to synthetic fibers, particularly polyester and its blends, under high-temperature dyeing conditions. This product is essential for manufacturers in the textile and plastics industries seeking consistent, high-quality colorants for demanding applications. The chemical identifier for this compound is CAS NO 12222-79-6.

Application

• Primary dyeing of polyester fibers and yarns.
• Dyeing of polyester-cotton and other synthetic fiber blends.
• Coloration of acetate and nylon textiles.
• Mass coloration (dope dyeing) of synthetic polymers and plastics.
• Transfer printing applications for synthetic fabrics.
• Manufacture of inks and toners for specialized printing.

Basic Information

Product Name	Disperse Blue 81
CAS No.	12222-79-6
Molecular Formula	C20H17N3O5
Molecular Weight	379.37 g/mol
Synonyms	1,4-Diamino-2,3-dihydroanthraquinone; C.I. 11345; Disperse Navy Blue S-2GL; Samaron Navy Blue FBL; Foron Navy Blue S-2GL; Dianix Navy Blue N; Palanil Navy Blue BF; Terasil Navy Blue GFL
EINECS	235-428-8

Quality Control

Our Disperse Blue 81 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, dispersion stability, and particle size distribution. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee it meets the specifications required for industrial dyeing processes.

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 (store away from light).

Specification

Item	Specification
Appearance	Dark Blue Powder
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Pass Test
Particle Size	> 95% below 2 microns
Identification (IR)	Conforms to Standard

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