Description

Disperse Blue 55 is a synthetic anthraquinone derivative dye widely recognized for its excellent colorfastness and dispersion properties. This high-performance colorant is engineered to deliver consistent, vibrant blue shades with superior thermal stability and migration resistance. It is primarily utilized in the coloration of synthetic hydrophobic fibers, meeting the stringent demands of modern textile manufacturing for durable and high-quality finishes.

Application

• Primary dyeing and printing of polyester (PET) fibers and fabrics.
• Coloration of polyamide (nylon) textiles.
• Used in the dyeing of acetate and triacetate fibers.
• Application in the mass coloration of plastics and synthetic resins.
• Manufacture of transfer printing paper for textile decoration.
• Potential use as a colorant for specific inks and coatings formulations.

Basic Information

Product Name	Disperse Blue 55
CAS No.	12217-78-6
Molecular Formula	C20H13NO4
Molecular Weight	331.32 g/mol
Synonyms	1,4-Diamino-2,3-dihydroanthraquinone; C.I. Disperse Blue 55; Disperse Blue S-R; Samaron Blue FBL; Foron Blue S-R; Palanil Blue 3RT; Dianix Blue FBL-E; Artisil Blue S-R; Terasil Blue 3RT; C.I. 63305
EINECS	Contact for details

Quality Control

Our Disperse Blue 55 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against comprehensive specifications for color strength, dispersion stability, and purity. Certificates of Analysis (COA) detailing specific test results are provided with every shipment 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 has low volatility but is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark blue powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes filter test
Particle Size	> 95% passes 80 mesh

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