Description

Disperse Red 129 is a high-performance, monoazo-based disperse dye renowned for its excellent color fastness and thermal stability. It is a critical component for achieving vibrant and durable red shades on synthetic fibers, particularly in demanding high-temperature dyeing processes. This product is essential for manufacturers in the textile and specialty plastics industries seeking reliable coloration for polyester, acetate, and nylon materials.

Application

• Primary dyeing of polyester fibers and fabrics, including microfibers.
• Dyeing of secondary acetate and triacetate fibers.
• Coloration of nylon and polyamide-based textiles.
• Mass coloration (dope dyeing) of synthetic polymers and plastics.
• Printing applications for synthetic fabrics.
• Production of colored masterbatches for engineering plastics.

Basic Information

Product Name	Disperse Red 129
CAS No.	12236-23-6
Molecular Formula	C₂₀H₁₃N₅O₄
Molecular Weight	387.35 g/mol
Synonyms	Disperse Red 129; C.I. Disperse Red 129; 1-Amino-2-phenoxy-4-hydroxyanthraquinone; 1-Amino-4-hydroxy-2-phenoxyanthraquinone; 9,10-Anthracenedione, 1-amino-4-hydroxy-2-phenoxy-; Disperse Red SE-4B; Samaron Red F3BS; Foron Red S-4B; Dianix Red AC-E
EINECS	235-428-1

Quality Control

Our Disperse Red 129 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for shade, strength, and dispersion stability. A comprehensive Certificate of Analysis (COA) detailing purity, physical form, and performance characteristics is provided with each shipment to guarantee batch-to-batch consistency and compliance with industry standards.

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 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.