Nhlapo, N.S. (Nontete Suzan)Focke, Walter WilhelmVuorinen, Eino2012-10-052012-10-052012-10Nontete Suzan Nhlapo, Walter W. Focke & Eino Vuorinen, TGA-FTIR study of the vapors released by triethylamine-acetic acid mixtures, Thermochimica Acta, vol. 565, pp. 113-119 (2012), doi: 10.1016/j.tca.2012.07.029.0040-6031 (print)1872-762X (online)10.1016/j.tca.2012.07.029http://hdl.handle.net/2263/20041Proprietary mixtures of amines and carboxylic acids are used as volatile corrosion inhibitors (VCIs) for the protection of iron and steel components against atmospheric corrosion. This study was focused on the nature of the vapors they release. VCI model compounds comprising mixtures of triethylamine and acetic acid were studied using thermogravimetric analysis coupled with Fourier-transform infrared spectroscopy (TGA–FTIR) at 50 ◦C. As vaporization progressed, the composition of the remaining liquid and the emitted vapor converged to a fixed amine content of ca. 27 mol%. This was just above the composition expected for the 1:3 amine to carboxylic acid complex. Mixtures close to this composition also featured the lowest volatility.en© 2012 Elsevier. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Thermochimica Acta. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Thermochimica Acta, vol 546, October 2012, doi: 10.1016/j.tca.2012.07.029.TGA–FTIRVCIsAminesCarboxylic acidsCorrosion and anti-corrosivesVaporsInfrared spectroscopyThermogravimetryPostprint Article