Description

C.I. Basic Yellow 54 is a synthetic cationic dye belonging to the methine class, widely recognized for its bright and intense yellow hue. This compound is valued for its strong affinity to substrates with anionic surfaces, ensuring excellent color fastness and vivid coloration. It serves as a critical coloring agent for industries requiring high-quality, stable dyes for technical applications, particularly in the production of specialty papers, inks, and synthetic polymer materials.

Application

• Paper Dyeing: Primary application for coloring various grades of paper, including tissue, packaging, and specialty papers, providing excellent bleed resistance.
• Ink Manufacturing: Used in the formulation of inks for flexographic, gravure, and inkjet printing, offering good solubility and color strength.
• Polymer Coloring: Suitable for mass coloration of certain synthetic fibers and plastics where cationic dyeability is required.
• Biological Staining: Employed as a histological stain in microscopy for contrast enhancement in biological samples.
• Leather Finishing: Applied in the dyeing of leather goods to achieve vibrant yellow shades.
• Security Inks: Utilized in the production of security documents and banknotes due to its specific spectral properties.

Basic Information

Product Name	C.I. Basic Yellow 54
CAS No.	71838-59-0
Molecular Formula	C21H23N3O3S
Molecular Weight	397.49 g/mol
Synonyms	Basic Yellow 54; Aizen Cathilon Yellow 5GLH; Astrazon Yellow 5GL; Maxilon Yellow 5GL; Cationic Yellow 54; 2-[[4-(Diethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazol-3-ium Methyl Sulfate; 1H-Imidazolium, 2-[[4-(diethylamino)phenyl]azo]-1,3-dimethyl-, methyl sulfate
EINECS	Contact for details

Quality Control

Our production of C.I. Basic Yellow 54 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 heat sources 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 standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Solubility in Water	Clear solution at 1%

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