Description

Acid Violet 131 is a synthetic organic dye belonging to the anthraquinone class, known for its vibrant violet hue and excellent color fastness properties. This high-performance dye is engineered to deliver consistent, brilliant coloration with strong affinity for protein-based fibers like wool, silk, and nylon. It is a critical component for manufacturers in the textile, leather, and specialty ink industries seeking reliable and wash-fast violet shades. Acid Violet 131 CAS NO 6262-05-1 is valued for its stability and compatibility in various acidic dyeing processes.

Application

Acid Violet 131 is a versatile dye utilized across multiple industrial sectors where durable, vivid violet coloration is required.

• Textile Dyeing: Primary application for dyeing wool, silk, nylon, and modified acrylic fibers to achieve deep, level violet shades with good light and wash fastness.
• Leather Finishing: Used in the coloration of leather goods, including apparel, footwear, and accessories, providing rich and uniform color penetration.
• Paper Coloring: Employed in the production of specialty colored papers, including decorative and security papers.
• Ink Manufacturing: A key pigment for creating violet inks used in ballpoint pens, inkjet printers, and stamp pads.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Cosmetic Additive: Used in limited applications for coloring soaps and other personal care products where regulations permit.

Basic Information

Product Name	Acid Violet 131
CAS No.	6262-05-1
Molecular Formula	C20H12N2Na2O8S2
Molecular Weight	534.43 g/mol
Synonyms	Acid Violet 5R; C.I. 62075; Acid Violet AS; Acid Violet R; Anthraquinone Violet; Sodium 1-amino-4-[(4-anilinophenyl)amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate; 1-Amino-4-(p-anilinoanilino)anthraquinone-2-sulfonic acid sodium salt
EINECS	228-426-1

Quality Control

Our Acid Violet 131 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against comprehensive specifications for color strength, shade, solubility, and impurity profiles. We provide full traceability and Certificates of Analysis (COA) are available upon request, detailing key parameters such as assay, moisture content, and heavy metal limits to support your compliance needs.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture which may affect performance.

Specification

Item	Specification
Appearance	Dark Violet Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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