Description

Basic Yellow 14 is a cationic, quaternary ammonium-based dye belonging to the methine class, widely recognized for its brilliant and stable yellow hue. This compound is essential for applications requiring intense, lightfast coloration with good substantivity to polyanionic materials. It is a critical component for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent color performance. The product is supplied under stringent quality controls to meet the exacting standards of industrial dyeing and printing processes.

Application

• Textile Dyeing: Primarily used for dyeing acrylic fibers, modacrylic, and acid-modified polyesters, offering excellent wash and light fastness.
• Paper Coloration: Employed in the production of high-quality colored papers, including security papers and decorative laminates.
• Ink Manufacturing: A key pigment for solvent-based inks, flexographic inks, and specialty printing inks requiring a vivid yellow shade.
• Leather Finishing: Used in dyeing leather goods to achieve bright, uniform yellow finishes.
• Biological Staining: Utilized in histology and cytology as a fluorescent stain for microscopic analysis.
• Plastics and Polymers: Incorporated for mass coloration of certain plastics where thermal stability is required.

Basic Information

Product Name	Basic Yellow 14
CAS No.	12221-77-1
Molecular Formula	C28H31ClN2O3
Molecular Weight	479.01 g/mol
Synonyms	Astrazon Yellow 7GLL; Aizen Cathilon Yellow 7GLL-H; Basacryl Yellow 7GL; Maxilon Yellow 7GL; C.I. Basic Yellow 14; 2-[[4-[Ethyl(3-sulfobenzyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium Chloride; 7GLL Yellow; Cationic Yellow 7GLL
EINECS	235-400-1

Quality Control

Every batch of Basic Yellow 14 is manufactured and tested under a strict quality management system. We ensure compliance with industry standards for dye purity, strength, and shade consistency. Key parameters including color strength, solubility, and impurity profile are rigorously verified. A comprehensive Certificate of Analysis (COA) detailing assay, spectroscopic identification, and physical properties is provided with each shipment to guarantee product integrity and performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility (in water)	Clear, yellow solution
pH (1% solution)	3.0 - 6.0

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