Description

Acid Yellow 159 is a synthetic organic dye belonging to the azo chemical class, valued for its bright, stable yellow hue. It is engineered to deliver excellent color fastness, lightfastness, and wash resistance in demanding industrial applications. This high-performance dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking consistent and vibrant coloration.

Application

• Textile Dyeing: Primarily used for dyeing nylon, silk, and wool fibers, providing brilliant yellow shades with good leveling properties.
• Leather Finishing: Applied in the dyeing of leather goods, offering uniform penetration and rich color for products like upholstery, garments, and accessories.
• Paper Coloration: Suitable for specialty papers, including decorative and security papers, where color consistency and stability are critical.
• Ink Formulation: Used in the manufacture of inks for various printing applications, contributing to color intensity and print quality.
• Biological Staining: May find use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acid Yellow 159
CAS No.	12235-22-2
Molecular Formula	C16H13N4NaO4S
Molecular Weight	380.35 g/mol
Synonyms	Acid Yellow 159; C.I. 18690; Acid Leather Yellow D; Acid Fast Yellow E-2G; Acid Yellow E-2G; Acid Yellow G; Acid Yellow 2G; Acid Yellow 159 (C.I. 18690)
EINECS	Contact for details

Quality Control

Our Acid Yellow 159 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise color strength, purity, and application performance specifications. Certificates of Analysis (COA) detailing key parameters such as assay, shade, and solubility are available upon request to support your quality assurance protocols.

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)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%

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