Arsenazo III
Product name: Arsenazo III
Synonym(s): 2,2′-(1,8-Dihydroxy-3,6-disulfonaphthylene-2,7-bisazo)bisbenzenearsonic acid, 2,7-Bis(2-arsonophenylazo)chromotropic acid
CAS Number: 1668-00-4
Introduction
| Quality Level | 200 |
| form | powder |
| technique(s) | titration: suitable |
| impurities | <0.1% Ca |
| color | brown to very dark brown, and Black |
| mp | >320 °C (lit.) |
| solubility | ammonium hydroxide: 1 mg/mL |
| λmax | 530 nm |
| application(s) | diagnostic assay manufacturing hematology histology |
Application
Arsenazo III has been used as a color forming reagent to determine uranium concentration.
Biochem/physiol Actions
Arsenazo III is a metallochromic dye. Arsenazo III is used in the determination of calcium in biological samples. It is used to evaluate calcium transport in permeabilized cells. It is also used for the detection of rare earth metals (polyvalent metal ions). Arsenazo III is used for the spectrophotometric determination of uranium and thorium.
