Description

Reactive Violet 8 is a high-purity, reactive dye belonging to the vinyl sulfone class, known for its brilliant violet hue and excellent colorfastness properties. It is a critical component for achieving durable and vibrant coloration on cellulosic fibers like cotton and viscose. This product is essential for textile manufacturers, dye houses, and chemical distributors serving the global fabric and garment industry who require consistent quality and reliable performance in their dyeing processes. Reactive Violet 8 CAS NO 12226-40-3 is engineered for applications demanding high wash and light fastness.

Application

• Primary dyeing and printing of cellulosic textiles, including cotton, linen, hemp, and rayon.
• Used in exhaust, pad-batch, and continuous dyeing processes for fabric and yarn.
• Formulation of specialty ink for textile printing.
• Blending with other reactive dyes to create a wide spectrum of purple and black shades.
• Coloration of paper and related products where a reactive bond is beneficial.
• Potential use in the coloration of leather.
• Research and development of new coloration materials and processes.

Basic Information

Product Name	Reactive Violet 8
CAS No.	12226-40-3
Molecular Formula	C20H16N3Na3O11S3
Molecular Weight	695.54 g/mol
Synonyms	Reactive Violet 8; C.I. Reactive Violet 8; Remazol Brilliant Violet 5R; Levafix Brilliant Violet E-R; Drimarene Brilliant Violet R; Vinylsulfone Reactive Violet 8; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-, trisodium salt; Reactive Violet K-2R
EINECS	Contact for details

Quality Control

Our Reactive Violet 8 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Every lot is tested against key parameters including color strength, hue, solubility, and fixation rate. Certificates of Analysis (COA) documenting purity, physical properties, and application performance are provided with each shipment to support your quality assurance protocols.

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 containers are sealed after each use to prevent moisture absorption which can affect performance.

Specification

Item	Specification
Appearance	Dark violet powder or granules
Color Strength	≥ 100% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Fixation Rate	≥ 70% (Standard Cotton)
Dusting Property	Low dusting
Identification (IR)	Conforms to standard

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