Description

Disperse Red 121 is a high-performance, synthetic organic dye belonging to the anthraquinone class of disperse dyes. It is valued for its excellent color fastness, brilliant red hue, and strong affinity for synthetic fibers, making it a critical component in textile coloration. This product is essential for manufacturers in the textile and polymer industries seeking reliable and vibrant coloration for polyester, acetate, and nylon materials.

Application

• Textile Dyeing: Primary application for dyeing polyester fibers and fabrics, including filament yarns and textured materials.
• Synthetic Fiber Coloration: Used for dyeing secondary acetate, triacetate, and nylon fibers.
• Mass Coloration: Suitable for the spin-dyeing of synthetic polymers where the dye is incorporated into the polymer melt or solution before extrusion.
• Plastics and Resins: Imparts color to various plastic products, including polycarbonate, polystyrene, and acrylics where thermal stability is required.
• Ink Formulation: Used in specialty ink applications for synthetic substrates.
• Transfer Printing: A key dye for the transfer printing process on polyester textiles.

Basic Information

Product Name	Disperse Red 121
CAS No.	12223-62-0
Molecular Formula	C19H17N5O4
Molecular Weight	379.37 g/mol
Synonyms	1-Amino-4-hydroxy-2-phenoxy-9,10-anthracenedione; C.I. Disperse Red 121; Disperse Red SE-4B; Samaron Red HBL; Foron Red SE-4B; Dianix Red HBL-FS; Kayalon Polyester Red BL-SE; Artisil Red HBL
EINECS	Contact for details

Quality Control

Our Disperse Red 121 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent shade, strength, and dispersion properties critical for textile applications. Key parameters such as color value, particle size distribution, and sublimation fastness are verified. A Certificate of Analysis (COA) detailing purity, physical form, and performance characteristics is provided with each shipment to guarantee it meets your specific 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 container should be kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark Red Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size	> 95% passes 80 mesh
Dispersion Stability	Stable in standard dispersion

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