Description

Direct Violet 27 is a synthetic, water-soluble azo dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. Its primary value lies in providing a deep, uniform violet shade with good wash fastness properties in textile applications. This product is essential for manufacturers in the textile dyeing and paper coloring industries seeking reliable and consistent colorants for their processes.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers to achieve a violet hue.
• Paper Coloring: Used in the production of colored papers, tissues, and paperboard where a violet shade is required.
• Leather Finishing: Employed in the dyeing of leather goods to impart color.
• Ink Formulation: A potential colorant for certain types of inks, including stamp pad and flexographic inks.
• Biological Staining: May find use as a histological stain in laboratory settings for microscopic analysis.
• Educational & Research: Used in academic and industrial research laboratories for dye chemistry studies and process development.

Basic Information

Product Name	Direct Violet 27
CAS No.	6426-64-8
Molecular Formula	C34H23N7Na2O9S2
Molecular Weight	783.71 g/mol
Synonyms	Direct Violet 5B; C.I. Direct Violet 27; Direct Violet 5BN; Direct Violet B; Direct Violet 5B (C.I. 23820); Benzo Violet 5B; Pontamine Violet 5B; Aizen Direct Violet 5BH; Atlantic Violet 5B; Chlorazol Violet 5B
EINECS	229-195-9

Quality Control

Our Direct Violet 27 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against established specifications for key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical 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
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Particle Size	≥ 95% passes 80 mesh

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