Description

Acid Yellow 72 is a synthetic organic dye belonging to the azo class, widely recognized for its bright and stable yellow hue. Its primary value lies in providing excellent color fastness and compatibility with various substrates, making it a critical component for achieving consistent and durable coloration. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and high-performance dyeing agents.

Application

• Textile Dyeing: Primarily used for dyeing nylon, silk, and wool fibers, offering good leveling and wash-fastness properties.
• Leather Finishing: Applied in the coloration of leather goods, providing uniform and vibrant shades.
• Paper Coloring: Used in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: Serves as a colorant for inks used in various printing applications.
• Biological Staining: May be utilized in specific histological or microbiological staining protocols.

Basic Information

Product Name	Acid Yellow 72
CAS No.	52584-47-1
Molecular Formula	C16H13N4NaO4S
Molecular Weight	380.35 g/mol
Synonyms	Acid Yellow 72; C.I. 18961; Acid Leather Yellow 2GL; Acid Fast Yellow E-2GL; Acid Yellow 2GL; Acid Yellow E-2GL; 2-Naphthalenesulfonic acid, 7-(phenylazo)-8-hydroxy-, monosodium salt; Sodium 7-(phenylazo)-8-hydroxynaphthalene-2-sulfonate
EINECS	258-051-1

Quality Control

Our Acid Yellow 72 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous internal specifications, which typically include parameters for color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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%
Water Solubility	Freely soluble
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%

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