Description

Acid Violet 90 is a synthetic anthraquinone-based acid dye renowned for its vibrant violet hue and excellent colorfastness properties. This high-performance dye is engineered to deliver consistent, brilliant coloration with strong affinity for protein fibers like wool, silk, and nylon. It is an essential component for manufacturers in the textile, leather, and specialty paper industries seeking reliable and wash-fast violet shades. The compound is identified by CAS No. 6408-29-3.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers to achieve violet shades with good light and wash fastness.
• Leather Finishing: Used in the coloration of leather goods, providing rich and uniform violet colors.
• Paper Staining: Employed in the production of specialty papers, including decorative and security papers, for color effects.
• Ink Formulation: A colorant component in the manufacture of certain inks for non-impact printing and specialty markers.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Polymer Coloring: Can be used for mass coloration of certain synthetic polymers and plastics.

Basic Information

Product Name	Acid Violet 90
CAS No.	6408-29-3
Molecular Formula	C41H30N3NaO6S2
Molecular Weight	739.80 g/mol
Synonyms	Acid Violet AS; C.I. Acid Violet 90; Acid Violet A; Wool Violet AS; Anthraquinone Violet; Sodium 1-amino-4-[(4-ethoxyphenyl)amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonate; 1-Amino-4-[(4-ethoxyphenyl)amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic Acid Sodium Salt
EINECS	229-077-4

Quality Control

Our Acid Violet 90 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. While this product is typically supplied to industrial grade standards, we can provide material compliant with specific buyer requirements. A comprehensive Certificate of Analysis (COA) detailing all test 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). Keep away from strong oxidizing agents. The container must be kept tightly closed to protect from moisture.

Specification

Item	Specification
Appearance	Dark violet to black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content (Sulfated)	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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