Description

Disperse Blue 337 is a high-performance, anthraquinone-based disperse dye known 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 high-quality apparel, automotive fabrics, and home furnishings.

Application

• Primary dyeing of polyester fibers and fabrics for apparel and sportswear.
• Dyeing of acetate and triacetate materials.
• Coloration of polyester-cotton and other synthetic blends.
• Used in the automotive textile sector for seat covers and interior fabrics.
• Application in high-temperature pressure dyeing and continuous thermosol processes.
• Suitable for the production of home furnishing textiles such as curtains and upholstery.

Basic Information

Product Name	Disperse Blue 337
CAS No.	87714-21-4
Molecular Formula	C20H17N3O5
Molecular Weight	379.37 g/mol
Synonyms	Disperse Navy Blue S-2GL; C.I. Disperse Blue 337; 1,4-Bis[(2,6-dichloro-4-nitrophenyl)amino]anthraquinone; Disperse Blue SE-2R; Navilene Blue S-2GL; Samaron Navy Blue S-2GL; Foron Navy S-2GL; Dianix Navy Blue S-2GL
EINECS	Contact for details

Quality Control

Our Disperse Blue 337 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatography and spectrophotometry, to ensure consistent shade, strength, and dispersion stability. A Certificate of Analysis (COA) detailing purity, particle size distribution, and fastness properties is provided with each shipment to guarantee it meets your specific application requirements.

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 (store away from light).

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes Filter Test
Particle Size	> 95% passes 2µ

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