Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)
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Language: 
Russian
Heading: 
Chemistry
Article type: 
Article
UDC: 
544.344.016+536.44:544.344.013-16-14+544.344.3
DOI: 
10.18500/1816-9775-2021-21-1-44-47

Phase diagram of the ?-alanine – water binary system

Autors: 
Cherkasov Dmitry G., Saratov State University
Parfenova Varvara D., Saratov State University
Abstract: 

The phase diagram of the ?-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 ?-alanine. For the first time, the composition of the liquid phase of the eutectic state was determined.

Key words: 
phase equilibria
binary system
phase diagram
eutectic
solubility of ?-alanine
Reference: 
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Received: 
12.11.2020
Accepted: 
30.11.2020
Published: 
01.03.2021