E-Book Overview
Data on the densities of organic compounds are essential for both scientific and industrial applications. Knowledge of densities is important in many areas, including custody transfer of materials, product specification, development of various predictive methods, and for characterizing compounds and estimating their purity. The densities of aromatic hydrocarbons were collected from the original literature published from 1870 to early 1997 and critically evaluated. The tables contain the original literature data along with their estimated uncertainties, and the evaluated data, in both numerical form and as coefficients to equations with selected statistical information. The volume also contains the CASR Number Index, a Chemical Name Index and a CD-ROM which allows fast full text index search.
E-Book Content
Landolt-Börnstein Numerical Data and Functional Relationships in Science and Technology New Series / Editor in Chief: W. Martienssen Group IV: Physical Chemistry Volume 8 Thermodynamic Properties of Organic Compounds and their Mixtures Subvolume E Densities of Aromatic Hydrocarbons R.C. Wilhoit, X. Hong, M. Frenkel, K.R. Hall Edited by K.R. Hall and K.N. Marsh 12 3 Editors K.R. Hall Thermodynamics Research Center TheTexas A&M University System College Station, Texas 77843-3111, USA K.N. Marsh former Thermodynamics Research Center TheTexas A&M University System College Station, Texas 77843-3111, USA now University of Christchurch New Zealand Authors R.C. Wilhoit X. Hong M. Frenkel K.R. Hall Thermodynamics Research Center TheTexas A&M University System College Station, Texas 77843-3111, USA Preface Critically evaluated experimental data covering the densities of organic compounds is essential for both scientific and industrial applications. Knowledge of densities is important in many areas, including custody transfer of materials, product specification, development of various predictive methods, and for characterizing compounds and estimating their purity. Various compilations of densities for organic compounds have been published. The early LandoltBörnstein compilation [23-ano] contained recommended values at specific temperatures. International Critical Tables [28-ano-1] provided recommended densities at 0 °C and values of constants for either a second or third order polynomial equation to represent densities as a function of temperature. This compilation also gave the range of validity of the equation and the limits of uncertainty, references used in the evaluation and those not considered. This compilation is one of the most comprehensive ever published. Timmermans [50-tim, 65-tim], Dreisbach [55-dre, 59-dre, 61-dre] and Landolt-Börnstein [71-ano] published additional compilations, primarily of experimental data. These compilations contained experimental data along with reference sources but no estimates of uncertainty for the data nor recommended values. The Thermodynamics Research Center has published recommended values for the densities of organic compounds since 1942 in its two loose leaf publications: TRC Thermodynamic Tables - Hydrocarbons and Non-Hydrocarbons. These compilations are updated with four supplements per year. References to the literature values used in the selection and those not used in the selection appear in the references for each table. The accuracy of the values ia apparent from the number of significant figures provided. More recently, the Design Institute of Physical Property Data, Project 801 has assembled a set of recommended equations for the densities of over 1500 compounds [89-dau/dan, 91-dau/dan, 92-dau/dan, 93-dau/dan, 94-dau/dan, 95-dau/dan, 96-dau/dan, 97-dau/dan]. Densities are represented by an equation fit to selected values from the freezing temperature to the critical temperature. References to so