Description

Reactive Brilliant Red KE-7B is a high-performance, water-soluble reactive dye belonging to the azo dye class, identified by CAS No. 61931-52-0. It is engineered to deliver exceptional color fastness and brilliant red shades on cellulosic fibers like cotton and viscose. This product is essential for textile manufacturers and dye houses seeking reliable, vibrant coloration with excellent wash and light fastness properties for their fabric production.

Application

Reactive Brilliant Red KE-7B is a versatile dye with primary applications in the textile industry and related fields.

• Textile Dyeing: Exhaust dyeing of cotton, linen, viscose, and other cellulosic fibers.
• Fabric Printing: Used in printing pastes for creating sharp, bright red patterns on natural fiber fabrics.
• Yarn Dyeing: Provides uniform and deep penetration for dyed yarns intended for weaving or knitting.
• Garment Dyeing: Suitable for batch dyeing of finished cotton garments.
• Technical Textiles: Coloring of cellulosic components in non-apparel textiles.
• Leather Auxiliary Coloring: Can be used in certain leather dyeing processes.
• Paper Coloring: Application in specialty paper production requiring high color value.
• Research & Development: Serves as a standard or intermediate in chemical and colorant research.

Basic Information

Item	Detail
Product Name	Reactive Brilliant Red KE-7B
CAS No.	61931-52-0
Molecular Formula	C29H19ClN7Na3O11S3
Molecular Weight	Contact for details
Synonyms	Reactive Red KE-7B; C.I. Reactive Red 141; Reactive Brilliant Red KE7B; Reactive Red 141; Levafix Brilliant Red E-7B; Remazol Brilliant Red 3BS; Procion Red H-7B; Dianix Red K-7B; Kayacion Red P-7B; Sumifix Brilliant Red 3B
EINECS	Contact for details

Quality Control

Our Reactive Brilliant Red KE-7B is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent shade, strength, solubility, and fixation properties. We provide detailed Certificates of Analysis (COA) that confirm compliance with industry specifications for reactive dyes, including parameters for purity, heavy metal content, and dyeing performance.

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, sparks, and open flame. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Red Powder
Color Strength	≥ 100% (vs. Standard)
Solubility (50°C)	≥ 100 g/L
Moisture Content	≤ 5.0%
pH Value (1% Solution)	6.0 - 8.0
Shade	Conforms to Standard
Fixation Rate	≥ 70%
Fastness to Washing	≥ 4 (ISO 105-C03)
Fastness to Light	≥ 5 (ISO 105-B02)
Identification (IR)	Conforms

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