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Densities and molal volumes of n ‐alkylamines from 15 to 80°C
Author(s) -
Liew K. Y.,
Seng C. E.,
Lee C. G.
Publication year - 1994
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540556
Subject(s) - molality , chemistry , thermodynamics , methylamine , methylene , volume (thermodynamics) , atmospheric temperature range , constant (computer programming) , linear relationship , medicinal chemistry , organic chemistry , mathematics , physics , aqueous solution , computer science , programming language , statistics
Densities of seven n ‐alkylamines from 1‐butylamine to 1‐decylamine were determined from 15 to 80°C. The density was found to be a linear function of the temperature within this temperature range. At constant temperature, the molal volume was a linear function of the number of methylene units in the chain for the homologous series. A simple equation with four constants correlating the molal volume with the number of methylene units and temperature of the n ‐alkylamines was formulated. Excellent agreement between the calculated, the measured and the literature values were obtained. Accurate molal volumes, and hence the densities of any n ‐alkylamines, other than methylamine, within the temperature range can be calculated from the equation.