Description

Reactive Red 35 is a high-purity, reactive azo dye designed for demanding industrial coloration processes. Its primary value lies in its ability to form a strong covalent bond with cellulosic fibers, ensuring excellent wash and light fastness in the final textile product. This dye is essential for manufacturers in the textile industry seeking vibrant, durable red shades on cotton, viscose, and other natural fibers.

Application

• Primary application in the exhaust dyeing of cellulosic textiles like cotton and viscose.
• Used in continuous dyeing processes for fabrics and yarns.
• Suitable for printing applications on natural fiber fabrics.
• Employed in the coloration of paper pulp for specialty papers.
• Can be used for dyeing leather to achieve specific red hues.
• Applied in research and development for dye chemistry studies and new formulation development.

Basic Information

Product Name	Reactive Red 35
CAS No.	12226-12-9
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1136.06 g/mol
Synonyms	Reactive Red 35; C.I. Reactive Red 35; Remazol Red RB; Levafix Red E-4BA; Procion Red H-EXL; Drimarene Red K-4BL; C.I. 18213; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our Reactive Red 35 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent color strength, reactive group content, and impurity profile suitable for industrial dyeing. A comprehensive Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with each shipment to guarantee performance in your application.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and moisture to maintain product stability and shelf life.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70% (Standard conditions)
Fastness Properties	Wash Fastness: ≥ 4; Light Fastness: ≥ 5

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