Related Experiment Video
Updated: Jun 28, 2026

Extraction and Characterization of Surfactants from Atmospheric Aerosols
Published on: April 21, 2017
Two-phase titration of organic ammonium ions with lauryl sulphate and methyl yellow as indicator
S O Jansson1, R Modin, G Schill
1Department of Analytical Pharmaceutical Chemistry, University of Uppsala. Box 574, S-751 23 Uppsala, Sweden.
Abstract:
Conditions for determination of quaternary ammonium compounds and amines by two-phase titration have been calculated on the basis of extraction constants for the ion-pairs between the titrant (lauryl sulphate), the indicator (Methyl Yellow) and the sample. Methods for determination of extraction constants are presented. The precision and selectivity of the method are demonstrated by titrations of ammonium ions with different structures and degrees of substitution. The results are in agreement with the theoretical calculations.
More Related Videos
09:46Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
Published on: August 19, 2013
12:47Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
Published on: January 22, 2018
Related Concept Videos
Titration of a Weak Base with a Strong Acid
Using the ICE table and substituting the Kb value, we calculate the initial pH of 50 mL of 0.1 M ammonia to be 11.11. Addition of 25 mL of 0.1 M hydrochloric acid to this solution of ammonia results in a buffer with an equal concentration of ammonia and ammonium ions. The pH of this buffer can be calculated by substituting these...
Indicators
Titration of a Weak Acid with a Weak Base
As a result, there is no simple...
Precipitation Titration: Endpoint Detection Methods
In the Volhard method, a standard excess of AgNO3 is first added to the...
Titration of Polyprotic Base with a Strong Acid
Titration in Nonaqueous Solvents