Solubility of 5-Amino Salicylic Acid in Different Solvents at Various Temperatures

Autor:	Arun Vaghasiya, Shipra Baluja, Ashish Patel, Ravi Gajera
Rok vydání:	2010
Předmět:	chemistry.chemical_compound chemistry General Chemical Engineering Enthalpy Inorganic chemistry Alcohol General Chemistry Activation energy Methanol Solubility Endothermic process Dissolution Tetrahydrofuran
Zdroj:	Journal of Chemical & Engineering Data. 55:1453-1455
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je900646u
Popis:	The solubility data of 5-amino salicylic acid in methanol, ethanol, carbon tetrachloride, and tetrahydrofuran (THF) at various temperatures were measured by gravimetrical method from (293.15 to 313.15) K under atmospheric pressure, and the solubility data were correlated as a function of temperature. The order of solubility is THF > carbon tetrachloride > ethanol > methanol. Further, some thermodynamic parameters such as enthalpy, Gibb’s energy, and entropy have also been evaluated for the dissolution process. It is observed that enthalpy and entropy are positive, whereas the Gibb’s energy of activation is negative for all of the four solvents. The negative Gibb’s energy suggests the spontaneous nature of dissolution process, whereas positive enthalpy indicates endothermic dissolution of compounds. The positive entropy is due to favorable dissolution in the studied solvents.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8675c8b3d3e11886774438b5afb8782 https://doi.org/10.1021/je900646u Zobrazit plný text záznamu