Description

Basic Red 4 is a synthetic cationic (basic) dye belonging to the azo class, widely recognized for its vibrant red color and strong affinity for polyacrylic fibers. Its primary value lies in providing excellent color fastness and brightness in demanding industrial dyeing and printing processes. This product is essential for manufacturers in the textile, paper, and leather industries seeking reliable and consistent coloration. It is also utilized in specialized applications such as the staining of biological tissues and the creation of inks.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylic, and some polyesters, offering good wash and light fastness.
• Paper Coloring: Used in the production of colored papers, tissues, and specialty paper products.
• Leather Finishing: Employed for dyeing leather goods to achieve uniform and vibrant red shades.
• Biological Staining: Acts as a histological stain in laboratory settings for microscopic analysis.
• Ink Manufacturing: A colorant component in the formulation of inks for various printing applications.
• Wood Staining: Used to impart color to wood and wood-based materials.

Basic Information

Product Name	Basic Red 4
CAS No.	70185-38-5
Molecular Formula	C22H26ClN3O
Molecular Weight	383.91 g/mol
Synonyms	Aizen Cathilon Red GTLH; Astrazon Red GTL; Basic Red 4; C.I. 11045; Maxilon Red GTL; Red GTL; 1-Methyl-2-[(E)-2-[4-[(E)-1-methyl-2-phenylhydrazinylidene]cyclohexa-2,5-dien-1-ylidene]hydrazinyl]pyridinium chloride
EINECS	Contact for details

Quality Control

Our Basic Red 4 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark red powder or granules
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Ash Content	≤ 1.0%
Shade	Within agreed tolerance

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