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Updated: Jan 17, 2026

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
Published on: June 28, 2017
Liquid-Phase Density Measurements of Various Molten Chlorides
Alexandra Brusq1, Mathieu Gibilaro1, Laurent Massot1
1Université de Toulouse, CNRS, Toulouse INP, Laboratoire de Génie Chimique, Toulouse 31062, France.
None:
X-ray imaging technique was developed as an accurate way to measure the density of molten chlorides at high temperatures under an argon atmosphere. X-ray transmission allows the capture of an image of the salt sample inside of a furnace. Following a calibration of the pixel size and subsequent image processing, the volume of the liquid salt can be determined and the density calculated. After a method characterization in terms of precision, reliability, and sensitivity on pure salts (LiCl, KCl, and NaCl), different salt mixtures were studied. First, the density variation with the composition of LiCl-KCl, LiCl-NaCl, and KCl-NaCl mixtures at 1123 K was investigated. Then, NaCl-CaCl2 and NaCl-BaCl2 systems were examined at 1123 and 1283 K, respectively. A comparison was made between the observed variations in the mixture density and their theoretical ideal behavior.
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