Description

Mordant Yellow 66 is a synthetic organic dye belonging to the azo dye class, widely recognized for its strong chelating properties with metal ions. This compound is valued for its ability to form stable, colored complexes, making it a critical component in specialized staining and analytical procedures. It is primarily utilized in the textile industry for dyeing and printing, as well as in research and laboratory settings for histochemical staining and as a metallochromic indicator.

Application

• Textile Dyeing and Printing: Used as a mordant dye for wool, silk, and nylon, producing yellow to orange shades with good light and wash fastness when complexed with metal salts like chromium or aluminum.
• Histological Staining: Employed in biological and medical laboratories for staining tissue samples, particularly for highlighting specific cellular structures in conjunction with metal mordants.
• Analytical Chemistry: Functions as a metallochromic indicator in complexometric titrations for the detection and quantification of metal ions such as aluminum, iron, and zirconium.
• Ink Formulation: A component in the manufacture of specialized inks for security printing, textiles, and other industrial marking applications.
• Research & Development: Serves as a chemical intermediate or a reference standard in synthetic chemistry and dye research projects.

Basic Information

Product Name	Mordant Yellow 66
CAS No.	6408-35-1
Molecular Formula	C16H9N4Na3O9S2
Molecular Weight	574.36 g/mol
Synonyms	Acid Chrome Yellow K; Alizarin Yellow GG; Alizarin Yellow R; Alizarin Yellow 2G; C.I. 14025; C.I. Mordant Yellow 66; Chrome Fast Yellow GG; Eriochrome Yellow R; Mordant Orange 1; Sodium 5-[(4-sulfophenyl)azo]salicylate
EINECS	229-067-1

Quality Control

Our Mordant Yellow 66 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards and consistent performance characteristics for industrial and laboratory use. A Certificate of Analysis (COA) detailing key parameters such as purity, dye content, and impurity profile is provided with every shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (Dye Content)	Min. 95%
Water Solubility	Freely soluble
Loss on Drying	Max. 5.0%
Ash Content (Sulfated)	Max. 30.0%
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.