Description

Acid Yellow 235 is a high-performance, synthetic organic dye belonging to the azo chemical class, valued for its bright, vivid yellow hue and excellent fastness properties. This dye is engineered to deliver superior color strength and stability, making it a critical component for achieving consistent and durable coloration in demanding industrial processes. It is primarily utilized by manufacturers in the textile, leather, and specialty paper industries who require reliable and wash-fast yellow dyes for nylon, wool, and silk fibers.

Application

• Primary dyeing of nylon, wool, and silk textiles and fabrics.
• Leather finishing and coloration for footwear, apparel, and upholstery.
• Coloration of specialty papers, including decorative and security papers.
• Ink formulation for jet printing and other specialty printing applications.
• As a colorant for certain types of plastics and polymers.
• Used in the manufacture of colored wood stains and coatings.

Basic Information

Product Name	Acid Yellow 235
CAS No.	90585-54-9
Molecular Formula	C21H18N4Na2O8S2
Molecular Weight	580.50 g/mol
Synonyms	Acid Yellow 235; C.I. Acid Yellow 235; Acid Leather Yellow ARL; Nylosan Yellow E-3G; Telon Yellow A3G; Supranol Yellow 3GW; Acid Fast Yellow E-3G; Yellow 235
EINECS	Contact for details

Quality Control

Our Acid Yellow 235 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analysis, including spectrophotometric purity assessment, strength evaluation, and tests for insolubles and heavy metals. Certificates of Analysis (COA) documenting all critical parameters 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 ambient temperature (15-25°C). Keep away from incompatible materials and sources of heat.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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