Description

C.I. Acid Yellow 194 is a synthetic organic dye belonging to the acid dye class, valued for its bright yellow hue and good fastness properties. This dye is engineered for applications requiring strong color intensity and compatibility with protein-based and polyamide substrates. It is a critical component for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration. Our supply ensures high purity and batch-to-batch consistency for your production needs.

Application

This acid dye is utilized across various industrial sectors for its coloring performance. Key applications include:

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers, providing excellent levelness and wash fastness.
• Leather Finishing: Used for coloring leather goods, offering vibrant shades with good penetration and lightfastness.
• Paper Coloring: Employed in the production of specialty papers, decorative papers, and security papers.
• Ink Formulation: A component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Plastics and Polymers: For coloring certain types of plastics where acid dye compatibility exists.

Basic Information

Product Name	C.I. Acid Yellow 194
CAS No.	73507-73-0
Molecular Formula	C26H18N4Na2O8S2
Molecular Weight	624.55 g/mol
Synonyms	Acid Yellow 194; C.I. 56290; Acid Leather Yellow G; Acid Fast Yellow G; Nylosan Yellow E-G; Telon Yellow G; Supranol Yellow GW; Acid Yellow G; 2,7-Naphthalenedisulfonic acid, 5-[[4-[(2,5-dichlorophenyl)azo]-3-hydroxy-2,7-disulfo-1-naphthalenyl]azo]-4-hydroxy-3-[(4-nitrophenyl)azo]-, sodium salt (1:?); 5-({4-[(2,5-Dichlorophenyl)diazenyl]-3-hydroxy-2,7-disulfonaphthalen-1-yl}diazenyl)-4-hydroxy-3-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our C.I. Acid Yellow 194 is produced under strict quality management systems. Each batch undergoes rigorous testing to ensure it meets precise specifications for color strength, shade, solubility, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, heavy metal content, and identification. Our quality commitment ensures reliable performance and consistency for your industrial processes.

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 incompatible materials. The product is light-sensitive (store away from light).

Specification

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

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