Partial molar volumes of organic solutes in water. IV. Benzoic and hydroxybenzoic acids at temperatures fromT= 298 K toT= 498 K and pressures up to 30 MPa

Partial molar volumes of organic solutes in water. VI.o-Chlorophenol andp-chlorophenol at temperatures from 298 K to 573 K and pressures up to 30 MPa

“…The third isomer (m-chlorophenol, 1-chloro-3-hydroxybenzene) was not studied since a sample of sufficient purity could not be obtained at a reasonable price. It is worth mentioning, however, that, as was observed for other disubstituted benzene derivatives, (2,3,5,6) the partial molar volumes of the 1,3-and 1,4-isomers are very close to each other.…”

“…The solutions were stored in the dark. Some organic solutes may have decomposed at high temperatures (3,5) causing a distortion of both the baseline and the sample plateau. No such indication of decomposition of aqueous chlorophenols was observed up to the highest experimental temperature.…”

“…The data for hydroxybenzene (phenol), (1) hydroxymethylbenzenes (cresols), (2) dihydroxybenzenes, (3) aminobenzene (aniline), (4) benzoic acid and its hydroxyderivatives, (5) and aminomethylbenzenes (toluidines) (6) have already been published. This paper presents new data for two chlorohydroxybenzenes (chlorophenols), i.e., 1-chloro-2-hydroxybenzene (o-chlorophenol) and 1-chloro-4-hydroxybenzene ( p-chlorophenol), obtained using a high-temperature and high-pressure (HTHP) vibrating-tube densimeter constructed in our laboratory (1) with a modified sample delivery system (3) and a commercial vibrating-tube cell DMA 602HT.…”

Partial molar volumes of organic solutes in water. V.o-,m-, andp-toluidine at temperatures from 298 K to 573 K and pressures up to 30 MPa

“…The solutions were stored in the dark under an argon atmosphere. Some organic solutes may decompose at high temperatures (3,5) which is always accompanied by a distortion of the course baselinesample plateau-baseline. No such indication of decomposition of aqueous toluidines was observed up to the highest experimental temperature.…”

“…The data for hydroxybenzene (phenol), (1) hydroxymethylbenzenes (cresols), (2) dihydroxybenzenes, (3) aminobenzene (aniline), (4) and benzoic acid and its hydroxyderivatives (5) have already been published. This paper presents new data for three aminomethylbenzenes (toluidines), i.e.…”