Abstract
THE effect of pressure (P) on the isothermal compressibilities (χT) of liquids is well expressed in most cases by the empirical equation (1) of Tait1: 
For a given substance, C is a constant independent of temperature and L is a constant at a given temperature. Attempts in the past to give a formula for the variation of L, or the isothermal compressibility, with temperature have not proved satisfactory, and Gibson and Loeffler2 found that the empirical polynomial (2) gave the best fit with their results: 
where L25 is the value of the Tait constant L at 25° C, t is the temperature and a and b are constant for a given substance.
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References
Tait, P. G., Proc. Roy. Soc. Edin., 12, 45 233 and 757 (1884); 20, 63 and 141 (1895).
Gibson, R. E., and Loeffler, O. H., J. Amer. Chem. Soc., 61, 2515 (1939).
McGowan, J. C., Rec. Trav. Chim., 76, 155 (1957).
Lutskii, A. E., and Solon'ko, V. N., Russ. J. Phys. Chem., 38, 602 (1964); Zhur. Fiz. Khim., 38, 1097 (1964).
Handbook of Chemistry and Physics, edit. by Weast, R. C, and Selby, S. M., forty-fifth ed. (Chemical Rubber Publishing Company, Cleveland, Ohio, 1964).
Gibson, R. E., and Loeffler, O. H., J. Amer. Chem. Soc., 63, 898 (1941).
McGowan, J. C., Rec Trav. Chim., 75, 193 (1956).
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MCGOWAN, J. Variation of the Isothermal Compressibilities of Liquids with Temperature. Nature 210, 1255–1256 (1966). https://doi.org/10.1038/2101255a0
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DOI: https://doi.org/10.1038/2101255a0
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