Description

Basic Yellow 45 is a synthetic cationic dye belonging to the azo class, identified by CAS No. 61847-53-8. It is valued for its strong affinity to polyacrylonitrile and other synthetic fibers, providing vibrant and wash-fast coloration. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent dyeing performance.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and polyamide fibers.
• Paper Coloring: Used in the production of colored papers, tissues, and paperboard.
• Ink Formulation: A key component in the manufacture of specialty inks for pens, markers, and security printing.
• Leather Finishing: Employed for dyeing leather goods to achieve specific color shades.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Plastics and Polymers: For mass coloration of certain plastics and synthetic materials.

Basic Information

Product Name	Basic Yellow 45
CAS No.	61847-53-8
Molecular Formula	C21H29N3O3S
Molecular Weight	403.54 g/mol
Synonyms	Basic Yellow 45; C.I. 49015; Astrazon Yellow 8GL; Aizen Cathilon Yellow 5GLH; Maxilon Yellow 5GL; Sumiacryl Yellow N-5GL; Yoracryl Yellow 8G; 4-[(4-Methoxyphenyl)azo]-1,3-dimethyl-1H-pyrazol-3-ium methyl sulfate
EINECS	263-280-9

Quality Control

Our Basic Yellow 45 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise color strength, shade, and purity specifications. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided to guarantee consistency and traceability 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5%
Shade	Within agreed tolerance
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Water Solubility	Conforms

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