Description

Basic Yellow 63 is a synthetic cationic dye belonging to the azo and methine chemical classes. This product is valued for its strong and vibrant yellow hue, excellent substantivity to various substrates, and good light and wash fastness properties. It is primarily used as a colorant in the textile, paper, and leather industries, where consistent color quality and performance are critical. Our supply ensures high purity and batch-to-batch consistency for reliable industrial processing.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modified polyamide, and polyester fibers to achieve bright yellow shades.
• Paper Coloring: Used in the manufacture of specialty papers, including decorative and packaging papers, requiring stable coloration.
• Leather Finishing: Imparts a uniform and durable yellow color to leather goods in the tanning industry.
• Ink Formulation: A key component in the production of inks for various printing applications, including flexographic and packaging inks.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be employed for mass coloration of certain plastics where compatibility is confirmed.

Basic Information

Product Name	Basic Yellow 63
CAS No.	71838-82-9
Molecular Formula	C21H26N4O3S
Molecular Weight	414.52 g/mol
Synonyms	C.I. Basic Yellow 63; Astrazon Yellow 8G; Aizen Cathilon Yellow 8G; Maxilon Yellow 8G; Sevron Yellow 8G; Basic Yellow 8G; Cationic Yellow 63; 1H-Benz[e]indolium, 2-[2-[4-(dimethylamino)phenyl]ethenyl]-3-methyl-, methyl sulfate
EINECS	Contact for details

Quality Control

Our Basic Yellow 63 is manufactured under a strict quality management system. Every batch is tested to ensure it meets precise specifications for color strength, shade, and chemical purity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment to guarantee supply reliability and performance consistency for your production processes.

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 incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility	Soluble in water and common polar organic solvents

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