Russian Journal of Applied Chemistry, 2012, Vol. 85, No. 4, pp. 689−691.
Pleiades Publishing, Ltd., 2012.
Original Russian Text © V.V. Sergeev, Yu.Ya. Van-Chin-Syan, 2012, published in Zhurnal Prikladnoi Khimii, 2012, Vol. 85, No. 4, pp. 684−686.
Heats of Mixing Butylacrylate with Certain Organic Solvents
V. V. Sergeev and Yu. Ya. Van-Chin-Syan
“L’vov Polytechnics” National University, L’vov, Ukraine
Received June 10, 2011
Abstract—Heats (enthalpies) of mixing binary systems formed by butylacrylate with hexane, benzene, acetonitrile,
1,2-dichloroethane, and acetic acid at 293 K and atmospheric pressure were determined by the calorimetric method.
Acrylic acid and its ethers are important industrial
chemicals, which are used in the production of a great
variety of polymers. A great number of publications are
devoted to the properties of solutions of ethers of acrylic
acids. The authors of  have determined values heats
and excess volumes of mixing methyl methacrylate with
benzene, toluene, n-xylene, cyclohexane, and ethers.
Excess volumes for solutions of methylmethacrylate,
ethyl- and butylacrylates in styrene, m- xylene, benzene,
and 1,4-dioxane have been determined in the works [2–6].
Vyshnyak et al. [7, 8] have determined densities and
excess volumes for methacrylic esters mixed with ethers
and toluene. The excess volume and viscosity for ethers
of acrylic and methacrylic acids have been determined
in the Sastry’s works [9, 10].
At the same time publications devoted to the direct ca-
lorimetric determination of mixing heats of butylacrylate
(BAC) with organic solvents are misswing.
Mother substances (Merck, Germany) used for the
determination of mixing heats were additionally puriﬁ ed
by multiple distillation; in addition, benzene and acetic
acid were recrystallized. The substances were addition-
ally identiﬁ ed by the values of refraction index n
, purity of the substances was determined
chromatographically. Resulting values of the refraction
index and of the density and the corresponding published
data, and also contents of the main component are pre-
sented in Table 1.
The mixing heat was determined on a MID-200 dif-
ferential microcalorimeter using the ampoule procedure.
A cell for mixing and a striker were made of glass and
Table 1. Physicochemical characteristics of components of the studied solutions
according to d
, g cm
, according to
Content of the main
component, wt %
published data experimental data published data experimental data
Acetonitrile 1.3437  1.3441 0.7828  0.7824 99.8
Benzene 1.5011  1.5009 0.8790  0.8787 99.9
Butylacrylate 1.4190  1.4188 0.9078  0.9073 99.8
Hexane 1.3750  1.3751 0.6594  0.6593 99.9
1,2-dichloroethane 1.4448  1.4445 1.2530  1.2533 99.8
Acetic acid 1.3720  1.3716 1.0491  1.0491 99.9