Description

Acid Yellow 118 is a synthetic anionic dye belonging to the azo chemical class, valued for its bright, vivid yellow hue and good fastness properties. It is a critical component for imparting durable and consistent coloration to a variety of substrates. This dye is primarily utilized by manufacturers in the textile, leather, and paper industries seeking high-performance colorants for their products.

Application

• Textile Dyeing: Primarily used for dyeing polyamide (nylon) fibers, wool, and silk, offering good wash and light fastness.
• Leather Finishing: Applied in the dyeing of leather goods, providing rich and uniform yellow shades.
• Paper Coloring: Used in the production of colored papers, specialty packaging, and decorative paper products.
• Ink Formulation: A pigment source in the manufacturing of inks for various printing applications.
• Biological Staining: Potential use as a microscopic stain in histology and cytology laboratories.
• Plastics and Polymers: For coloring certain types of plastics and synthetic materials.

Basic Information

Product Name	Acid Yellow 118
CAS No.	12270-05-2
Molecular Formula	C16H10Cl2N4Na2O7S2
Molecular Weight	599.29 g/mol
Synonyms	Acid Yellow 118; C.I. 24820; Acid Leather Yellow G; Nylosan Yellow E-3G; Supranol Yellow GW; Telon Yellow G; Acid Fast Yellow E-3G; 7-Benzamide-4-hydroxy-3-[(4-methoxyphenyl)azo]naphthalene-2-sulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Acid Yellow 118 is produced under a stringent quality management system. Every batch is tested to ensure consistent strength, shade, and chemical purity, meeting relevant industry specifications for dye content and impurity profiles. Certificates of Analysis (COA) detailing specific batch results 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 (Dye Content)	Min. 95%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Shade	Conforms to standard
Fastness Properties	Contact for details

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