Naphthalene as a reference material for vapour pressure measurement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F05%3A00014831" target="_blank" >RIV/60461373:22340/05:00014831 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Naphthalene as a reference material for vapour pressure measurement

Original language description

The aim of the present work was to develop recommended sublimation vapour pressure data of naphthalene, consistent with calorimetric enthalpies of sublimation and also with properties at the triple point (vapour pressure, enthalpy of vaporization and enthalpy of fusion, where accurate data are available). Vapour pressure in the solid phase was measured by a static method in the temperature range from to 273 to 313 K, covering pressure range from 0.8 Pa to 45 Pa. Measurements at lower temperatures (downto 248 K) were performed in order to explore the capability of our apparatus; these values can be, however, subject to systematic errors and were not included in the correlation. Data were treated simultaneously with selected literature enthalpies of sublimation and differences between heat capacities of ideal gas and that of the solid. Resulting parameters of the Cox equation were constrained to agree with the recommended vapour pressure and enthalpy of vaporization at the triple point.

Czech name

Naftalen jako referenční látka pro měření tlaku nasycených par

Czech description

The aim of the present work was to develop recommended sublimation vapour pressure data of naphthalene, consistent with calorimetric enthalpies of sublimation and also with properties at the triple point (vapour pressure, enthalpy of vaporization and enthalpy of fusion, where accurate data are available). Vapour pressure in the solid phase was measured by a static method in the temperature range from to 273 to 313 K, covering pressure range from 0.8 Pa to 45 Pa. Measurements at lower temperatures (downto 248 K) were performed in order to explore the capability of our apparatus; these values can be, however, subject to systematic errors and were not included in the correlation. Data were treated simultaneously with selected literature enthalpies of sublimation and differences between heat capacities of ideal gas and that of the solid. Resulting parameters of the Cox equation were constrained to agree with the recommended vapour pressure and enthalpy of vaporization at the triple point.

Type

O - Miscellaneous

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů