US EPA

1167387 

Journal Article 

Excess molar volumes and partial molar volumes of dipropylene glycol monomethyl ether plus n-alkanol mixtures at 25 degrees C 

Pal, A; Kumar, H 

2001 

Yes 

Journal of Solution Chemistry
ISSN: 0095-9782
EISSN: 1572-8927 

30 

5 

411-423 

10.1023/A:1010344414009 

WOS:000169710800002 

The excess molar volumes VE for binary liquid mixtures containing dipropylene glycol monomethyl ether and methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, and 1-heptanol have been measured using a continuous dilution dilatometer over the whole mole fraction range at 25 degreesC at atmospheric pressure. V-E are negative over the whole composition range except for the systems containing 1-pentanol, 1-hexanol, or 1-heptanol which are positve at every composition. V-E increases in a positive direction with increase in chain length of the n-alcohol. The results have been used to estimate the excess partial molar volumes (V) over bar (E)(i) of the components. The change of V-E and (V) over bar (E)(i) with composition and the number of carbon atoms in the alcohol molecule are discussed as a basis to understand some of the molecular interactions present in the mixtures. 

excess volumes; partial molar volumes; binary mixtures; dipropylene glycol monomethyl ether; n-alcohols