Description

C.I.Reactive Red 90 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. It is engineered for exceptional color fastness and brilliant red shades on cellulosic fibers like cotton and viscose, making it a critical component for textile manufacturers seeking durable and vibrant coloration. This product is essential for industries involved in the dyeing and printing of textiles, leather, and paper, where consistent batch-to-batch quality and reliable supply are paramount.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, viscose, and other cellulosic fibers.
• Textile Printing: Used in printing pastes for creating sharp, wash-fast red patterns on fabrics.
• Leather Coloring: Imparts durable red colors to finished leather goods.
• Paper Staining: Employed for coloring specialty papers and paper products.
• Research & Development: Serves as a standard or intermediate in chemical research and dye synthesis studies.
• Industrial Colorant: Potential use in the coloration of non-textile substrates where a reactive red dye is required.

Basic Information

Product Name	C.I.Reactive Red 90
CAS No.	12731-73-6
Molecular Formula	C26H17ClN7Na4O16S4
Molecular Weight	Contact for details
Synonyms	Reactive Red 90; Reactive Brilliant Red X-3B; C.I. 18210; Remazol Brilliant Red F3B; Levafix Brilliant Red E-4BA; Procion Red H-E3B; Drimarene Brilliant Red K-5BL; Vinylsulfone Reactive Dye; 1,3,6-Naphthalenetrisulfonic acid, 8-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-5-hydroxy-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our C.I.Reactive Red 90 is produced under a strict quality management system. Every batch undergoes comprehensive testing for critical parameters including color strength, shade, solubility, and reactive group content to ensure consistent performance in your application. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with each shipment.

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 strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the container is resealed tightly after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	Standard ± 3%
Shade	Standard ± 0.5 CIELAB units
Moisture Content	≤ 5.0%
Water Solubility	≥ 100 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70%

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