Description

C.I. Basic Red 42 is a synthetic cationic dye belonging to the azo chemical class, widely recognized for its vibrant red hue and strong affinity for polyacrylonitrile fibers. Its primary value lies in providing excellent color fastness, brightness, and leveling properties in demanding industrial dyeing processes. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent colorants for synthetic materials.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylic, and certain polyamide fibers, offering good wash and light fastness.
• Paper Coloring: Used in the production of colored papers, tissues, and paper products where a bright red shade is required.
• Ink Manufacturing: A key component in the formulation of specialty inks, including stamp pad inks and certain solvent-based systems.
• Leather Finishing: Employed for dyeing leather goods to achieve uniform and vibrant red finishes.
• Biological Staining: Utilized in histology and microbiology as a staining agent for microscopic analysis.
• Plastics and Polymers: Can be used for mass coloration of certain plastics where compatibility is confirmed.

Basic Information

Product Name	C.I. Basic Red 42
CAS No.	12221-66-8
Molecular Formula	C21H22ClN7
Molecular Weight	407.90 g/mol
Synonyms	Basic Red 42; Aizen Cathilon Red GTLH; Astrazon Red GTL; Maxilon Red GTL; Cationic Red GTL; 1,3-Benzenediamine, 4-[[4-(dimethylamino)phenyl]azo]-N,N-dimethyl-, monohydrochloride; 4-((4-(Dimethylamino)phenyl)diazenyl)-N1,N3-dimethylbenzene-1,3-diamine hydrochloride
EINECS	Contact for details

Quality Control

Our C.I. Basic Red 42 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark red 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	≤ 1.0%
Particle Size (Typical)	Passes through 80 mesh

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