DIRECT SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF ALKYLBENZENESULFONATE WITH 1-(4-N-METHYLPYRIDINIUMAZO)-4-(4-AMINOPHENYLAZO) NAPHTHALENE IODIDE

5 June 1981

journal article
research article
Published by Oxford University Press (OUP) in Chemistry Letters

Vol. 10 (6) , 711-712
https://doi.org/10.1246/cl.1981.711

Abstract

A new reagent, 1-(4-N-methylpyridiniumazo)-4-(4-aminophenylazo) naphthalene iodide, can react with sodium alkylbenzenesulfonate to show a color change in an aqueous medium. The calibration graph is straight line over the range from 8×10⁻⁶ to 3.0×10⁻⁵ M of sodium dodecylbenzenesulfonate. The practical molar absorptivity is 1.8×10⁴ 1 mol⁻¹ cm⁻¹ at 594 nm.

Keywords

SODIUM
ALKYLBENZENESULFONATE
NAPHTHALENE IODIDE
METHYLPYRIDINIUMAZO
AMINOPHENYLAZO
REACT
MOLAR

This publication has 1 reference indexed in Scilit:

Spectrophotometric determination of anionic surfactants in river waters using 1-(4-nitrobenzyl)-4-(4-diethylaminophenylazo)-pyridinium bromide
The Analyst, 1980