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ASTM-E2071:2010 Edition

ASTM-E2071:2010 Edition

$35.75

E2071-00(2010) Standard Practice for Calculating Heat of Vaporization or Sublimation from Vapor Pressure Data

Published By Publication Date Number of Pages
ASTM 2010 4
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1.1 This practice describes the calculation of the heat of vaporization of a liquid or the heat of sublimation of a solid from measured vapor pressure data. It is applicable to pure liquids, azeotropes, pure solids, and homogenous solid solutions over the temperature range for which the vapor pressure equation fitted to the measured data is applicable.

Note 1This practice is generally not applicable to liquid mixtures. For a pure liquid or azeotrope, composition does not change upon vaporization so that the integral heat of vaporization is identical to the differential heat of vaporization. Non-azeotropic liquid mixtures change composition upon vaporizing. Heat of vaporization data computed from this practice for a liquid mixture are valid only as an approximation to the mixture differential heat of vaporization; it is not a valid approximation to the mixture integral heat of vaporization.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 There is no ISO standard equivalent to this practice.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Practice
2 Significance and Use
Experimental Vapor Pressure Data
Calculation
Report
Keywords
A1. SAMPLE CALCULATIONS AND REPORT
A1.1 Source of Sample Vapor Pressure Data
A1.2 Sample Experimental Data
3 A1.3 Sample Calculation
A1.4 Sample Heat of Vaporization Report
4 REFERENCES

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