Abstract

GRANDE, M. del C.; BIANCHI, H.L.  and  MARSCHOFF, C.M.. On the density of pure acetonitrile. An. Asoc. Quím. Argent. [online]. 2004, vol.92, n.4-6, pp.109-114. ISSN 0365-0375.

Density values for pure AN reported by several laboratories show differenceswell beyond experimental error, probably because of the presence of traces of water or other impurities. Density values of water - acetonitrile mixtures were measured over the whole composition range. Difficulties in obtainingabsolute pureness of AN are recognized and, hence, AN with a low, but controlled, amount of water was employed. A plot including our data and those of other workers shows very good consistency and leads to an extrapolated density for pure AN of 0.77588 g.cm-3,a value we recommend for precise measurements.

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