Description

Arsenazoiiigr is a high-purity analytical reagent and complexometric indicator, widely recognized for its specific and sensitive colorimetric reactions. This compound is essential for the precise quantitative analysis of various metal ions in complex matrices. It is a critical material for analytical laboratories, research institutions, and quality control departments in industries such as environmental monitoring, metallurgy, and chemical manufacturing.

Application

• Spectrophotometric Determination: Primary use as a chromogenic reagent for the sensitive detection and quantification of rare earth elements, thorium, and uranium ions.
• Complexometric Titration: Employed as a metallochromic indicator in EDTA titrations for determining metal ion concentrations with high endpoint clarity.
• Environmental Analysis: Used in testing water and soil samples for trace heavy metal contamination, supporting environmental compliance and safety.
• Geological & Metallurgical Assaying: Applied in the analysis of ores, alloys, and industrial process streams to determine specific metal content.
• Biochemical Research: Utilized in studies involving metal-binding proteins and enzymatic reactions where metal ion concentration is a critical parameter.
• Quality Control Reagent: Serves as a standard reagent in pharmaceutical and chemical manufacturing for impurity profiling and raw material verification.

Basic Information

Product Name	Arsenazoiiigr
CAS No.	1688-00-4
Molecular Formula	C22H18As2N4O14S2
Molecular Weight	776.37 g/mol
Synonyms	Arsenazo III; 2,7-Bis[(2-arsonophenyl)azo]-1,8-dihydroxynaphthalene-3,6-disulfonic acid; Neothorin; Uranon III; 2,2'-(1,8-Dihydroxy-3,6-disulfo-2,7-naphthalene-bis(azo))dibenzenearsonic acid; 2,7-Bis(2-arsonophenylazo)chromotropic acid; Arsenazo 3; Arsenazotriigr
EINECS	Contact for details

Quality Control

Every batch of Arsenazoiiigr is manufactured and tested under a strict quality management system to ensure consistent performance as an analytical reagent. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and performance characteristics are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep the container tightly sealed in a dry environment to maintain stability and shelf life.

Specification

Item	Specification
Appearance	Dark brown to purple-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Absorbance Ratio	Meets internal standard
Sensitivity Test	Conforms to reference

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