Description

Acid Yellow 155 is a high-performance, synthetic organic dye belonging to the acid dye class, known for its bright and vivid yellow hue. This product is engineered to deliver excellent color strength, wash fastness, and leveling properties, making it a critical component for achieving consistent and durable coloration. It is primarily used by manufacturers in the textile, leather, and paper industries seeking reliable and vibrant yellow dyes for their production processes.

Application

• Primary dyeing of polyamide (nylon) fibers and fabrics.
• Coloration of wool and silk textiles.
• Leather finishing and dyeing for apparel, upholstery, and accessories.
• Paper coloring for specialty and decorative papers.
• Ink formulation for specific printing applications.
• As a colorant for anodized aluminum in certain industrial processes.

Basic Information

Product Name	Acid Yellow 155
CAS No.	12220-81-4
Molecular Formula	C16H14N4Na2O7S2
Molecular Weight	492.41 g/mol
Synonyms	Acid Yellow 155; C.I. 13910; Acid Leather Yellow 2GL; Nylosan Yellow E-2GL; Telon Yellow K-2GL; Supranol Yellow 4GL; Acid Fast Yellow E-2G; 7-Benzoylamino-4-hydroxy-3-[(4-sulfophenyl)azo]-2-naphthalenesulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Acid Yellow 155 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analytical testing, including spectrophotometric analysis for strength and shade, to meet precise industry specifications. Certificates of Analysis (COA) documenting purity, solubility, and fastness properties are available upon request.

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-yellow powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Solubility in Water	Conforms
Fastness Properties	Contact for details

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