Abstract
THE polymorphism of anhydrous sodium sulphate is well known1–4 and the latent heats associated with its two transitions (orthorhombic form V to the orthorhombic form III at 177° C, and III to the hexagonal form I at 241° C.) have recently been determined by J. P. Coughlin5.
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References
Kracek, C. F., J. Phys. Chem., 33, 1281 (1939).
Colby, Z. Krist., 77, 58 (1931).
Frevel, L. K., J. Chem. Phys., 8, 290 (1940).
Bredig, M. A., J. Phys. Chem., 46, 754 (1942).
Coughlin, J. P., J. Amer. Chem. Soc., 77, 868 (1955).
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KREIDL, E., SIMON, I. Effect of Water upon the Polymorphic Transitions in Anhydrous Sodium Sulphate. Nature 181, 1529 (1958). https://doi.org/10.1038/1811529a0
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DOI: https://doi.org/10.1038/1811529a0
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