Description

Mordant Violet 2 is a synthetic organic dye belonging to the mordant dye class, identified by CAS NO 6408-82-8. This compound is valued for its ability to form stable, colorfast complexes with metal ions, making it essential for applications requiring durable coloration. It is primarily sought by manufacturers in the textile, leather, and specialty chemical industries for dyeing and staining processes where metal-based fixation is employed.

Application

• Textile Dyeing: Used for dyeing wool, silk, and nylon fibers, often with chromium or aluminum mordants to achieve violet shades with excellent wash and light fastness.
• Leather Finishing: Employed in the staining and coloring of leather goods, providing rich, stable colors that bond effectively with the treated leather substrate.
• Biological Staining: Serves as a histological stain in microscopy for contrasting tissue samples, often in combination with other dyes.
• Ink Manufacturing: A colorant component in the production of specialized inks for industrial marking or artistic purposes.
• Paper Coloring: Used in the tinting of specialty papers where color stability is required.
• Analytical Chemistry: Can be utilized as an indicator or a complexometric agent in certain laboratory analytical methods.

Basic Information

Product Name	Mordant Violet 2
CAS No.	6408-82-8
Molecular Formula	C20H13N2NaO5S
Molecular Weight	416.38 g/mol
Synonyms	Acid Violet 5B; C.I. Mordant Violet 2; C.I. 14640; Alizarin Violet 3B; Chromotrope FB; Eriochrome Violet B; Solochrome Violet R; Mordant Blue 3 (obsolete); Sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate
EINECS	229-066-1

Quality Control

Our Mordant Violet 2 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing for identity, purity, strength, and physical properties to ensure it meets consistent performance standards for industrial applications. A Certificate of Analysis (COA) detailing specific results is provided with every 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark violet to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Water Solubility	Freely soluble
Ash Content (Sulfated)	Max. 25.0%
Heavy Metals (as Pb)	Max. 20 ppm

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