Description

C.I. Reactive Yellow 70 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. It is engineered for exceptional color fastness and brilliant yellow hues in demanding textile applications, ensuring consistent batch-to-batch quality for industrial-scale production. This dye is primarily utilized by manufacturers in the textile industry for dyeing and printing cellulosic fibers like cotton and viscose.

Application

• Exhaust Dyeing of Cotton: For uniform and deep shade development in batch dyeing processes.
• Continuous Dyeing: Applied in pad-batch and pad-steam processes for high-volume fabric production.
• Textile Printing: Used in pigment printing formulations for sharp and vibrant patterns on fabrics.
• Dyeing of Regenerated Cellulose: Effective for coloring viscose, lyocell, and other man-made cellulosic materials.
• Union Dyeing: Suitable for dyeing blends of cotton with other fibers under specific conditions.
• Industrial Fabric Coloring: For applications requiring durable color, such as in workwear and home textiles.

Basic Information

Product Name	C.I. Reactive Yellow 70
CAS No.	61969-39-9
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1135.28 g/mol
Synonyms	Reactive Yellow KE-4R; Reactive Yellow KE-4RN; C.I. 18972; Reactive Brilliant Yellow KE-4R; Reactive Yellow H-E4R; Apcoactive Yellow KE-4R; Dinactive Yellow KE-4R; Yellow Reactive KE4R
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Yellow 70 adheres to stringent quality management protocols to ensure product consistency and performance. Every batch is tested against key parameters including shade, strength, solubility, and fixation properties. A Certificate of Analysis (COA) detailing these results is provided with each shipment to guarantee compliance with your technical specifications.

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 heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Yellow to Brownish-Yellow 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
Identification (IR)	Conforms to Standard
Shade	Conforms to Standard
Fixation Rate	≥ 70%

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