Description

Basic Red 29 is a synthetic cationic (basic) dye belonging to the azo class, widely recognized for its vibrant red color and strong affinity for polyacrylonitrile fibers. This compound is valued for its excellent tinctorial strength, good lightfastness, and reliable performance in demanding industrial dyeing processes. It is primarily utilized by manufacturers in the textile, paper, and leather industries for coloring acrylic fibers, anionic surface-modified polyester, and specialty papers.

Application

• Textile Dyeing: Primary application for dyeing acrylic fibers, modacrylics, and anionic-dyeable polyester to achieve bright red shades.
• Paper Coloring: Used in the production of specialty papers, including colored tissue, decorative paper, and security paper.
• Leather Finishing: Employed in the dyeing of leather goods to provide consistent and vibrant red coloration.
• Ink Manufacturing: Serves as a colorant for certain types of inks, including stamp pad inks and flexographic inks.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used for mass coloration of certain plastics where compatibility is confirmed.

Basic Information

Product Name	Basic Red 29
CAS No.	42373-04-6
Molecular Formula	C21H21ClN6O3S
Molecular Weight	496.95 g/mol
Synonyms	Aizen Cathilon Red GTLH; Astrazon Red GTL; Basic Red GTL; C.I. Basic Red 29; Maxilon Red GTL; Pyrazolium, 3-[(4-aminophenyl)azo]-1,2-dimethyl-, chloride, reaction products with 4-[(2,6-dichloro-4-nitrophenyl)azo]-N-ethylbenzenamine; 1,2-Dimethyl-3-[(4-aminophenyl)azo]pyrazolium chloride coupled with 4-[(2,6-dichloro-4-nitrophenyl)azo]-N-ethylbenzenamine
EINECS	255-787-7

Quality Control

Our Basic Red 29 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Every lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Ash Content	≤ 1.0%
Shade	Conforms to Standard
Solubility	Freely soluble in water and ethanol

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