The interaction between urea and carboxylic acids in solution: The ternary systems water ‐ urea ‐ n‐valeric acid and water ‐urea ‐ 2‐methyl butyric acid (isovaleric acid)
1955; Royal Netherlands Chemical Society; Volume: 74; Issue: 1 Linguagem: Inglês
10.1002/recl.19550740115
ISSN1878-7096
AutoresJ. Α. Α. Ketelaar, B.O. Loopstra,
Tópico(s)Crystallization and Solubility Studies
ResumoAbstract The liquid miscibility gaps in the ternary systems water‐urea‐n‐valeric add and water‐urea‐2‐methyl butyric add respectively are determined at 25° C. The heats of mixing of n‐butyric add and of isobutyric acid with an equimolar amount of water and with a concentrated solution of urea in water are determined. No significant difference in the behaviour of branched and unbranched adds towards urea in solution is observed, contrary to former statements.
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