Description

C.I. Disperse Red 158 is a high-performance, synthetic organic dye belonging to the disperse dye class, widely recognized for its vibrant red hue and excellent fastness properties. This product is essential for achieving deep, consistent coloration on synthetic hydrophobic fibers, particularly polyester and its blends. It is a critical raw material for textile dyeing and printing operations, as well as specialty applications in plastics and inks, where color stability and durability are paramount. Industrial buyers in the global textile, polymer, and specialty chemical sectors rely on this dye for its proven performance in demanding manufacturing processes.

Application

• Polyester Fiber Dyeing: Primary application for dyeing polyester yarns, fabrics, and garments, especially via high-temperature dyeing methods.
• Polyester/Cellulose Blends: Used in combination with other dye classes to color blended fabrics like poly-cotton.
• Textile Printing: Formulated into printing pastes for direct and transfer printing on synthetic fabrics.
• Plastics Coloring: Imparts color to various thermoplastic polymers, including polystyrene, ABS, and polycarbonate, during mass coloration.
• Ink Manufacturing: Serves as a colorant for specialty inks used in non-paper substrates.
• Automotive Interiors: Used for dyeing polyester-based automotive textiles, such as seat covers and headliners, requiring high lightfastness.
• Synthetic Leather: Coloring agent for polyurethane (PU) or polyvinyl chloride (PVC) based synthetic leather materials.
• Masterbatch Production: A key component in the production of color concentrates (masterbatches) for the plastics industry.

Basic Information

Product Name	C.I. Disperse Red 158
CAS No.	61968-48-7
Molecular Formula	C20H13N3O5S
Molecular Weight	407.40 g/mol
Synonyms	Disperse Red 158; Disperse Red SE-4B; C.I. 111565; 1-[(4-((2-Cyanoethyl)amino)-3-nitrophenyl)azo]-2-hydroxy-3-naphthamide; Samaron Red F3BS; Foron Red SE-4B; Dianix Red F3B-E; Kayalon Polyester Red F3B-E; Terasil Red 3B
EINECS	Contact for details

Quality Control

Our C.I. Disperse Red 158 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive testing including spectrophotometric strength, shade assessment, dispersion stability, and fastness property tests (e.g., wash, light, rubbing). We provide full traceability and Certificates of Analysis (COA) are available for every shipment, detailing key parameters against agreed specifications. Our production adheres to relevant global standards for industrial chemicals.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient 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	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes 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.