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Cherkasov D. G., Parfenova V. D. Phase diagram of the β-alanine – water binary system. Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2021, vol. 21, iss. 1, pp. 44-47. DOI: https://doi.org/10.18500/1816-9775-2021-21-1-44-47
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544.344.016+536.44:544.344.013-16-14+544.344.3
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Phase diagram of the β-alanine – water binary system
Тип статьи для РИНЦ:
RAR научная статья
Abstract
The phase diagram of the β-alanine–water binary system was studied using the visual polythermal method and the method of time–temperature curves in а temperature range of -20–90°С. There is a eutectic equilibrium at -18.3°С in the system; the solid phases of this equilibrium are ice and individual β-alanine. For the first time, the composition of the liquid phase of the eutectic state was determined.
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References
- Khimicheskaya entsiklopediya: v 5 t., red. I. L. Knunyants [I. L. Knunyants, ed. Chemical Encyclopedy: in 5 vols.]. Moscow, Sov. Entsiklopediya Publ., 1988–1998, vols. 1–5 (in Russian).
- Smirnov V. I., Badelin V. G. Thermochemistry of the solution of β-alanine in (H2O+alcohol) mixtures at 298.15 K. Thermochimica Acta, 2013, vol. 565, pp. 202–204. http://dx.doi.org/10.1016/j.tca.2013.05.012
- McMeekin T. L., Cohn E. J., Weare J. H. Studies in the physical chemistry of amino acids, peptides and related substances. VII. A comparison of the solubility of amino acids, peptides and their derivatives. J. Amer. Chem. Soc., 1936, vol. 58, no. 11, pp. 2173–2181. https://doi.org/10.1021/ja01302a026
- Ramasami P. Solubilities of amino acids in water and aqueous sodium sulfate and related apparent transfer properties. J. Chem. Eng. Data, 2002, vol. 47, no. 5, pp. 1164–1166. https://doi.org/10.1021/je025503u
- Romero C. M., Oviedo C. D. Effect of temperature on the solubility of α-amino acids and α, ω-amino acids in water. J. Solut. Chem., 2013, vol. 42, no. 6, pp. 1355– 1362. https://doi.org/10.1007/s10953-013-0031-9
- Anosov V. Ya., Ozerova M. I., Fialkov Yu. Ya. Osnovy fi zikohimicheskogo analiza [Fundamentals of physico-chemical analysis]. Мoscow, Nauka Publ., 1976. 504 p. (in Russian).
- Il’in K. K., Sinegubova S. I., Demahin A. G. Rukovodstvo k prakticheskim zanyatiyam po fi ziko-himicheskomu analizu dvuhkomponentnyh sistem [A guide to practical exercises in physico-chemical analysis of two-component systems]. Saratov, Izd-vo Sarat. un-ta, 1990. 63 p. (in Russian).
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