Abstract
A comprehensive physicochemical study of the “urea – DL-alanine – water” system was carried out to determine the nature of the interactions between its components. Methods of isomolar series, X-ray phase analysis, thermal analysis, and FTIR spectroscopy were applied. It was found that molecular associates with a stoichiometry of 1:1 are formed in an aqueous solution, as evidenced by deviations in density, viscosity, refractive index, and electrical conductivity from their additive values. In the solid phase, the system represents a mechanical mixture of the initial components without the formation of new crystalline phases. The presence of hydrogen bonds of the N – H ··· O = C and N – H ··· O(COO-) types, which stabilize the molecular associate, was confirmed. The results are of practical importance for the development of stable liquid nitrogen fertilizers based on urea-ammonium mixtures modified with amino acids.
Recommended Citation
NURMONOV, Suvonkul E. and AZIMOV, Saydullo Kh.
(2026)
"PHYSICOCHEMICAL INVESTIGATION OF INTERACTIONS IN THE UREA – DL-ALANINE SYSTEM,"
CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2026:
No.
1, Article 6.
DOI: https://doi.org/10.70189/1992-9498.1705
Available at:
https://cce.researchcommons.org/journal/vol2026/iss1/6