Description

Metanil Yellow is a synthetic anionic azo dye widely recognized for its vibrant yellow color and chemical stability. This compound is valued for its strong tinctorial strength and compatibility with various substrates, making it a versatile coloring agent in industrial processes. It is primarily utilized by manufacturers in the textile, paper, and leather industries, as well as in specialized applications such as biological staining and pH indicators.

Application

• Textile Dyeing: Used for coloring wool, silk, and synthetic fibers, providing a bright, fast yellow shade.
• Paper and Pulp Coloring: Imparts a uniform yellow color to paper products, including specialty papers and packaging materials.
• Leather Finishing: Applied in the dyeing of leather goods to achieve consistent and durable coloration.
• Biological Staining: Serves as a histological stain in microscopy for visualizing cellular structures in laboratory settings.
• pH Indicator: Functions as an acid-base indicator in certain analytical and educational chemistry applications.
• Ink Formulation: Incorporated into the production of printing inks and colorants for various marking applications.
• Detergent and Soap Coloring: Used to add color to household and industrial cleaning products.

Basic Information

Product Name	Metanil Yellow
CAS No.	587-98-4
Molecular Formula	C18H14N3NaO3S
Molecular Weight	375.38 g/mol
Synonyms	Acid Yellow 36; C.I. 13065; Tropaeolin G; Aniline Yellow G; Metanil Yellow G; Acid Leather Yellow G; Sodium 4-[(4-anilinophenyl)azo]benzenesulfonate; 4-Anilinoazobenzene-4'-sulfonic acid sodium salt
EINECS	209-608-2

Quality Control

Our Metanil Yellow is produced under a stringent quality management system to ensure batch-to-batch consistency and reliability. The product is tested against key parameters including purity, color strength, and solubility. While we offer standard industrial grade, our quality protocols ensure the material is suitable for demanding applications. Certificates of Analysis (COA) documenting specific test results are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 85%
Color Strength	95 - 105% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Ash Content	Max. 1.0%

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