Description

Mordant Yellow 3 is a synthetic organic dye belonging to the azo dye class, widely recognized for its use as a metallochromic indicator and complexometric titration agent. Its primary commercial value lies in its ability to form stable, colored complexes with metal ions, making it an essential analytical reagent in quality control and research laboratories. This product is particularly critical for industries requiring precise metal ion quantification, such as water treatment, metallurgy, and chemical manufacturing.

Application

• Complexometric Titrations: Primarily used as a metallochromic indicator for the titration of aluminum, iron, and other metal ions with EDTA.
• Analytical Chemistry: Serves as a key reagent in spectrophotometric methods for the detection and determination of specific metal concentrations.
• Water Quality Testing: Employed in procedures to analyze hardness and metal ion content in industrial and municipal water supplies.
• Metallurgical Analysis: Used in the quality control of alloys and ores to determine metal composition.
• Dyeing and Staining: Functions as a mordant dye for textiles and as a biological stain in microscopy, though this is a secondary application.
• Research & Development: Utilized in chemical and material science research for studying metal-ligand interactions and developing new analytical methods.

Basic Information

Product Name	Mordant Yellow 3
CAS No.	6054-97-3
Molecular Formula	C13H9N3Na2O8S2
Molecular Weight	477.33 g/mol
Synonyms	Aluminon; Ammonium aurintricarboxylate; 5-[(3-Carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methyl]-2-hydroxybenzoic acid triammonium salt; C.I. Mordant Yellow 3; C.I. 43810; Aurintricarboxylic acid triammonium salt; Aluminum reagent
EINECS	227-993-1

Quality Control

Our Mordant Yellow 3 is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity suitable for analytical applications. Each lot is tested against stringent in-house specifications, which include identity confirmation, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, orange-red solution

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