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Gasometric titration for dimethylaluminum chloride analysis
Lin Wang1, Peter Maligres2, Kyle Eckenroad1
1Analytical Chemistry, Merck, Rahway, NJ 07065, USA.
Journal of Pharmaceutical and Biomedical Analysis
|March 28, 2016
Summary
A new gasometric titration method accurately quantifies active alkylaluminum in dimethylaluminum chloride solutions. This simple, cost-effective technique offers a selective alternative to ICP-MS analysis for reaction stoichiometry.
Area of Science:
- Chemical analysis
- Organometallic chemistry
Background:
- Accurate quantification of active alkylaluminum is crucial for reaction stoichiometry.
- Existing methods like ICP-MS can be costly and require inert conditions.
Purpose of the Study:
- To develop a gasometric titration method for quantifying active alkylaluminum content.
- To establish a simple, inexpensive, and selective analytical alternative.
Main Methods:
- Development of a gasometric titration procedure.
- Quantification of active alkylaluminum in dimethylaluminum chloride solutions.
- Comparison with Inductively Coupled Plasma Mass Spectrometry (ICP-MS).
Main Results:
- The gasometric titration method demonstrated reproducibility and good precision.
- Results showed good correlation with the ICP-MS method.
- The titration offers selective analysis of methylaluminum species without inertion.
Conclusions:
- Gasometric titration is a viable and advantageous method for determining active alkylaluminum content.
- This technique provides a simple, inexpensive, and selective alternative to ICP-MS.
- The method supports accurate stoichiometry calculations for reaction charges.
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