Description

Direct Violet 12 is a synthetic organic dye belonging to the class of direct or substantive dyes, valued for its ability to color cellulose fibers like cotton and paper without the need for a mordant. Its primary commercial significance lies in providing a strong, violet colorant with good wash-fastness properties for textile and paper applications. This product is essential for manufacturers in the textile dyeing, paper coloring, and leather finishing industries seeking consistent and reliable color performance.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers to achieve violet shades.
• Paper Coloring: Used in the production of colored papers, tissues, and packaging materials.
• Leather Finishing: Imparts color to leather goods in the tanning industry.
• Ink Formulation: A colorant component for certain types of inks and toners.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Wood Staining: Can be used for coloring wood and related products.

Basic Information

Product Name	Direct Violet 12
CAS No.	2429-75-6
Molecular Formula	C34H22N6Na2O8S2
Molecular Weight	760.73 g/mol
Synonyms	Direct Violet 12; C.I. Direct Violet 12; Direct Violet R; Direct Violet 2B; C.I. 22550; Benzo Violet; Direct Violet 2BN; Pontamine Violet R; Aizen Direct Violet RH; Atlantic Violet 2B
EINECS	219-373-6

Quality Control

Our Direct Violet 12 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing specifications such as purity (assay), moisture content, and heavy metals is provided with every shipment to guarantee compliance with your application requirements.

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 incompatible materials and sources of heat. For long-term storage, ensure the original packaging remains sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark violet to black powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Shade	Standard

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