Description

Reactive Yellow 135 is a high-performance, water-soluble reactive dye belonging to the azo chemical class, identified by CAS NO 77907-38-1. It is engineered to deliver brilliant and wash-fast yellow shades on cellulosic fibers like cotton and viscose, forming a strong covalent bond with the fabric for exceptional durability. This product is essential for textile manufacturers and dye houses seeking reliable, vibrant coloration with excellent light and wet fastness properties for apparel and home furnishings.

Application

Reactive Yellow 135 is primarily used in the textile industry for dyeing and printing natural fibers. Its key applications include:

• Exhaust Dyeing of Cotton: For batch-wise dyeing processes to achieve uniform, deep shades.
• Continuous Dyeing: Used in pad-batch and pad-steam processes for high-volume production.
• Textile Printing: Formulated into printing pastes for creating sharp, colorful patterns on fabrics.
• Dyeing of Viscose/Rayon: Provides excellent color yield and fastness on regenerated cellulosic fibers.
• Dyeing of Linen: Suitable for achieving bright shades on linen fabrics.
• Garment Dyeing: Used for dyeing finished apparel items.

Basic Information

Product Name	Reactive Yellow 135
CAS No.	77907-38-1
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1136.26 g/mol
Synonyms	Reactive Yellow M-5R; C.I. Reactive Yellow 135; Reactive Golden Yellow M-5R; Reactive Yellow MR; Novacron Yellow S-5R; Levafix Golden Yellow E-3RA; Drimarene Golden Yellow R/K-3R; Sumifix Golden Yellow S-5R; Triactive Yellow M-5R
EINECS	Contact for details

Quality Control

Our Reactive Yellow 135 is manufactured under a strict quality management system. Every batch is tested to ensure consistent strength, shade, and reactivity, meeting the high standards required for industrial textile applications. Key parameters such as color strength, solubility, and fixation rate are rigorously controlled. Certificates of Analysis (COA) detailing batch-specific results are available upon request.

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. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Yellow to Brown Powder
Color Strength	100 ± 3% (Standard)
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Dusting Property	Low Dusting
Identification (HPLC/UV-Vis)	Conforms to Standard

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