Description

Basic Red 9 is a synthetic cationic dye belonging to the azo class, widely recognized for its vibrant red color and strong affinity for various substrates. This high-performance colorant is essential for achieving consistent, durable coloration in demanding industrial applications. It is a critical raw material for manufacturers in the textile, paper, and specialty ink industries seeking reliable and efficient dyeing solutions.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and cationic-dyeable polyester fibers, providing excellent color fastness.
• Paper Coloring: Used in the production of specialty papers, including colored tissue, decorative paper, and security paper products.
• Ink Manufacturing: A key pigment for creating solvent-based and other specialty inks for packaging and printing.
• Leather Finishing: Employed in the dyeing of leather goods to produce rich, uniform red shades.
• Biological Staining: Utilized in histology and microbiology as a staining agent for microscopic analysis.
• Plastics and Polymers: Suitable for coloring certain types of plastics and synthetic materials.

Basic Information

Product Name	Basic Red 9
CAS No.	569-61-9
Molecular Formula	C₂₁H₂₂ClN₃
Molecular Weight	351.87 g/mol
Synonyms	Basic Red 9; C.I. 42500; Magenta; Basic Violet 14; Astrazon Red Violet 3R; Aizen Cathilon Red GTLH; Sevron Red G; Maxilon Red GRL; Cationic Red GTL; 1,3,3-Trimethyl-2-[(E)-2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]indolium chloride
EINECS	209-321-2

Quality Control

Our Basic Red 9 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Every lot is tested against rigorous internal specifications, which typically include parameters for color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing the results of these quality control tests is provided with each 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). This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to moisture or direct light may affect its color strength and performance.

Specification

Item	Specification
Appearance	Dark greenish-brown powder or crystals
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%

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