Description

Basic Yellow 29 is a synthetic cationic dye belonging to the azo chemical class, widely recognized for its strong affinity to polyacrylonitrile and other synthetic fibers. Its primary value lies in providing vibrant, wash-fast yellow coloration, making it a critical component in textile manufacturing and specialty paper production. This product is essential for industries requiring consistent and reliable dyeing performance, including textile mills, paper coating operations, and manufacturers of inks and toners.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and other cationic-dyeable synthetic fibers.
• Paper Coloring: Used in the production of specialty papers, including decorative and high-visibility security papers.
• Ink & Toner Manufacturing: Serves as a colorant for inks, including jet printing inks, and specific toner formulations.
• Leather Finishing: Applied in the dyeing process for leather goods to achieve yellow hues.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics & Polymers: Can be incorporated for the mass coloration of certain plastics and polymers.

Basic Information

Product Name	Basic Yellow 29
CAS No.	39279-59-9
Molecular Formula	C21H29N3O4S
Molecular Weight	419.54 g/mol
Synonyms	Aizen Cathilon Yellow 3GLH; Astrazon Yellow 3GL; Basacryl Yellow X-3GL; C.I. Basic Yellow 29; Maxilon Yellow 3GL; Pyrazol Yellow; 4-[(4-Methoxyphenyl)azo]-1,3-dimethyl-1H-pyrazol-5-amine methosulfate; 1,3-Dimethyl-4-[(4-methoxyphenyl)azo]-5-amino-1H-pyrazolium methyl sulfate
EINECS	254-404-1

Quality Control

Our production of Basic Yellow 29 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 purity, assay, and conformance to agreed specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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-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 solution

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