Description

C.I. Reactive Red 68 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. It is engineered for covalent bonding with cellulosic fibers, delivering exceptional color fastness properties including wash, light, and perspiration resistance. This dye is essential for manufacturers in the textile industry seeking vibrant, durable red shades on cotton, viscose, and other natural fabrics.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, and regenerated cellulose fibers.
• Textile Printing: Used in printing pastes for creating sharp, fast red designs on cellulosic fabrics.
• Leather Coloring: Imparts durable red color to leather goods.
• Paper Staining: Employed for coloring paper products where high wet fastness is required.
• Biomolecule Staining: Potential use in laboratory settings for staining specific biological substrates.
• Industrial Colorant: Suitable for other applications requiring a reactive, anionic red dye.

Basic Information

Product Name	C.I. Reactive Red 68
CAS No.	12239-68-8
Molecular Formula	C29H19ClN7Na3O19S6
Molecular Weight	1135.28 g/mol
Synonyms	Reactive Red 68; Reactive Brilliant Red M-8B; C.I. 18221; Remazol Brilliant Red M-8B; Levafix Brilliant Red E-4BA; Procion Red H-8B; Dianix Red K-4B; Vinylsulfone Azo Dye; 5-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[[2-methoxy-5-[(2-sulfoxyethyl)sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonic Acid Trisodium Salt
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Red 68 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and reactive group content. A Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with each shipment to guarantee it meets your specific technical requirements.

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 and excessive heat. The product is hygroscopic (moisture-sensitive); ensure the original packaging is resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Dark Red Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Dye Content	≥ 80%
Identification (IR)	Conforms to Standard
Fastness Properties (on Cotton)	Wash: 4-5, Light: 5-6, Perspiration: 4-5

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