62337-00-2 Usage
Uses
Used in Analytical Chemistry:
ARSENAZO III DISODIUM SALT is used as a diazo dye reagent for the spectrophotometric determination of aluminum, gallium, and indium. This application allows for the accurate measurement and analysis of these metal ions in various samples.
Used in Complexometric Determination:
In addition to its use in spectrophotometry, ARSENAZO III DISODIUM SALT is also employed in the complexometric determination of lanthanides, thallium, scandium, thorium, uranium, and yttrium. This technique involves the formation of complexes between the metal ions and the reagent, enabling their quantification and analysis.
Used as a Metal Indicator:
ARSENAZO III DISODIUM SALT serves as a metal indicator in various analytical processes. It forms specifically colored metal ion complexes in aqueous media, which can be used to identify and determine the concentration of different metal ions in a sample.
Purification Methods
Contaminants include monoazo derivatives, starting materials for synthesis and by-products. It is partially purified by precipitation of the dye from aqueous alkali on addition of HCl. More thorough purification is achieved by taking a 2g sample in 15-25mL of 5% aqueous NH3 and filter. Add 10mL HCl (1:1) to the filtrate to precipitate the dye. Repeat the procedure and dissolve the solid dye (0.5g) in 7mL of a 1:1:1 mixture of n-propanol/conc NH3/water at 50o. After cooling, filter the solution and chromatograph the filtrate through a cellulose column using a 3:1:1 mixture of n-propanol/conc NH3/water as eluent. Collect the blue band and evaporate it to 10-15mL below 80o, then add 10mL of conc HCl to precipitate pure Arsenazo III. Wash it with EtOH and dry it in air [Borak et al. Talanta 17 215 1970]. The sodium salt is then obtained by dissolving it in the equivalent amount of dilute NaOH and freeze-drying. The purity of the dye can be checked by paper chromatography using M HCl as eluent. It is used for the estimation of Th, U, Zr, Cd and Zn [Michaylova & Yuroukova Anal Chim Acta 68 73 1974.]
Check Digit Verification of cas no
The CAS Registry Mumber 62337-00-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,2,3,3 and 7 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 62337-00:
(7*6)+(6*2)+(5*3)+(4*3)+(3*7)+(2*0)+(1*0)=102
102 % 10 = 2
So 62337-00-2 is a valid CAS Registry Number.
InChI:InChI=1/C22H18As2N4O14S2.2Na/c29-21-18-11(9-16(43(37,38)39)19(21)27-25-14-7-3-1-5-12(14)23(31,32)33)10-17(44(40,41)42)20(22(18)30)28-26-15-8-4-2-6-13(15)24(34,35)36;;/h1-10,29-30H,(H2,31,32,33)(H2,34,35,36)(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2
