Description

Disperse Red 311 is a high-performance, synthetic organic dye belonging to the disperse dye class, widely recognized for its excellent color fastness and thermal stability. Its primary value lies in its ability to produce vibrant, durable red shades on synthetic hydrophobic fibers, making it a critical component in demanding textile coloration processes. This product is essential for manufacturers in the textile and polymer industries, particularly for dyeing polyester, acetate, and nylon fibers, as well as for specialty applications in plastics and inks.

Application

• Primary dyeing of polyester fibers and fabrics for apparel and home textiles.
• Coloration of cellulose acetate and triacetate fibers.
• Dyeing of nylon and polyamide-based textiles.
• Mass coloration (spin dyeing) of synthetic polymers and plastics.
• Manufacture of color filters and other optical components.
• Production of inks for specialized printing applications.
• As a colorant in the research and development of new polymeric materials.

Basic Information

Product Name	Disperse Red 311
CAS No.	77907-28-9
Molecular Formula	C20H13NO4
Molecular Weight	331.32 g/mol
Synonyms	Disperse Red 311; C.I. Disperse Red 311; 1-Amino-2-phenoxy-4-hydroxyanthraquinone; 1-Amino-4-hydroxy-2-phenoxyanthraquinone; Anthraquinone, 1-amino-4-hydroxy-2-phenoxy-; Disperse Red SE-4B; Samaron Red HBL; Foron Red S-4BL; Kayalon Polyester Red BL-SE
EINECS	Contact for details

Quality Control

Our Disperse Red 311 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analysis, including strength, shade, dispersion stability, and particle size distribution testing. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical 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 strong oxidizing agents. The product is light-sensitive; prolonged exposure to direct light should be avoided to maintain color integrity.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
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.