Description

Sulfonazo Iii Sodium Salt is a high-purity analytical reagent and a metallochromic indicator belonging to the sulfonazo family of azo dyes. This compound is valued for its selective and sensitive colorimetric response to specific metal ions, making it a critical tool for precise quantitative analysis in research and industrial quality control. It is primarily used by analytical chemists and quality assurance professionals in the environmental monitoring, metallurgy, and chemical manufacturing sectors.

Application

• Spectrophotometric Determination of Metals: Used as a sensitive chromogenic agent for the quantitative analysis of barium, strontium, and other alkaline earth metals in solution.
• Complexometric Titration Indicator: Serves as a metallochromic indicator in EDTA titrations for the determination of metal ion concentrations.
• Environmental Water Analysis: Employed in testing kits and laboratory procedures to detect and quantify trace metal pollutants in water samples.
• Geological and Metallurgical Assaying: Applied in the analysis of ores, alloys, and geological samples to determine specific metal content.
• Research and Method Development: Utilized in academic and industrial R&D for developing new analytical methods and studying metal-ligand interactions.
• Quality Control Reagent: Acts as a standard reagent in pharmaceutical and chemical manufacturing processes where metal impurity limits are critical.

Basic Information

Product Name	Sulfonazo Iii Sodium Salt
CAS No.	314062-43-6
Molecular Formula	C22H14N4Na4O14S4
Molecular Weight	764.57 g/mol
Synonyms	Sulfonazo III, Sodium Salt; Sulfonazo III; 2,7-Bis(2-sulfophenylazo)chromotropic acid, tetrasodium salt; 2,7-Bis(4-sulfo-2-azophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid, tetrasodium salt; Chromotropic acid sulfonazo III; Barium chromophore III; Barium indicator Sulfonazo III
EINECS	Contact for details

Quality Control

Our Sulfonazo Iii Sodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR spectroscopy, to ensure it meets the high standards required for analytical applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark brown to purple-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, colored solution

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