Description

C.I. Direct Blue 243 is a high-performance, water-soluble direct dye belonging to the azo chemical class, identified by CAS No. 12222-08-1. It is valued for its excellent substantivity to cellulosic fibers, providing deep and vibrant blue shades with good wash and light fastness properties. This dye is essential for manufacturers in the textile and paper industries seeking reliable and efficient coloring solutions for bulk production.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Paper Coloring: Used for tinting and dyeing paper pulp, tissue, and specialty papers to achieve uniform blue coloration.
• Leather Finishing: Employed in the dyeing of leather goods to provide rich blue tones.
• Ink Formulation: A colorant component in the manufacture of certain aqueous-based inks and toners.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	C.I. Direct Blue 243
CAS No.	12222-08-1
Molecular Formula	C32H20N6Na4O16S4
Molecular Weight	996.80 g/mol
Synonyms	Direct Blue 243; C.I. 24420; Direct Blue 2B; Pontamine Blue 2B; Sirius Blue 2B; Aizen Direct Blue 2BH; Amanil Blue 2B; Atul Direct Blue 2B; Dinamine Blue 2B; Solar Blue 2B
EINECS	Contact for details

Quality Control

Our production of C.I. Direct Blue 243 adheres to stringent quality management protocols 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 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Matches Standard
Solubility in Water	Conforms

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