Description

Reactive Violet 1 is a high-purity, reactive dye belonging to the vinyl sulfone class, known for its excellent color fastness and brilliant violet hue. This product is engineered for demanding industrial applications where consistent shade, strong covalent bonding to substrates, and reliable batch-to-batch uniformity are critical. It is an essential component for manufacturers in the textile, leather, and specialty paper industries seeking vibrant and durable coloration.

Application

• Textile Dyeing: Primary application for dyeing and printing of cellulosic fibers like cotton, viscose, and linen, offering excellent wash and light fastness.
• Leather Finishing: Used for coloring leather goods, providing rich, uniform shades with good adhesion to the protein matrix.
• Paper Coloration: Suitable for producing colored specialty papers, including decorative and packaging materials.
• Ink Formulation: A key colorant in the manufacture of inks for various printing applications.
• Research & Development: Serves as a standard or intermediate in chemical research and analytical laboratories.

Basic Information

Product Name	Reactive Violet 1
CAS No.	12239-45-1
Molecular Formula	C20H16N3Na3O11S3
Molecular Weight	681.53 g/mol
Synonyms	Reactive Violet K-3R; C.I. Reactive Violet 1; Remazol Brilliant Violet 5R; Levafix Brilliant Violet E-5R; Vinylsulfone Reactive Violet; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-, trisodium salt; Reactive Violet 5R
EINECS	Contact for details

Quality Control

Our Reactive Violet 1 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets high standards for color strength, solubility, and reactive group content. A comprehensive Certificate of Analysis (COA) detailing purity, shade, and physical-chemical parameters is provided with each shipment to guarantee supply reliability and performance consistency for your production processes.

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).

Specification

Item	Specification
Appearance	Dark violet to black powder
Identification (IR)	Conforms
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Dusting Grade	Low dusting

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