Description

Reactive Yellow 143 is a high-performance, water-soluble reactive dye belonging to the azo chemical class, designed for covalent bonding with cellulosic fibers. Its primary value lies in providing excellent wash and light fastness properties, ensuring vibrant and durable coloration in demanding textile applications. This product is essential for manufacturers in the textile industry seeking reliable and efficient dyes for cotton, viscose, and other natural fiber dyeing and printing processes.

Application

• Exhaust dyeing of cotton and viscose fibers in garment and fabric form.
• Continuous dyeing processes for cellulosic textiles, including pad-batch and pad-steam methods.
• Textile printing applications, particularly for producing sharp prints on natural fiber fabrics.
• Dyeing of blended fabrics containing cellulosic components, such as cotton-polyester blends.
• Used in the coloration of yarn and thread for industrial sewing and embroidery.
• Application in the home textiles sector for dyeing towels, bed linens, and upholstery fabrics.

Basic Information

Product Name	Reactive Yellow 143
CAS No.	145808-15-7
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1135.28 g/mol
Synonyms	Reactive Yellow M-3R; C.I. Reactive Yellow 143; Reactive Golden Yellow M-3R; Reactive Yellow H-E4R; APOLLO Reactive Yellow H-E4R; LIOGOLD Yellow H-E4R; Reactive Yellow HE4R; Yellow 143
EINECS	Contact for details

Quality Control

Our production of Reactive Yellow 143 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation properties. Certificates of Analysis (COA) detailing these specifications are provided with each shipment to support your quality assurance processes.

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 incompatible materials and sources of ignition. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Yellow to orange powder
Color Strength	Standard depth ± 3%
Solubility in Water	≥ 100 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Moisture Content	≤ 5.0%
Dusting Property	Low
Identification (IR)	Conforms to standard
Fixation Rate	≥ 70%

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