ASTM E 2071 : 2021
Current
The latest, up-to-date edition.
Standard Practice for Calculating Heat of Vaporization or Sublimation from Vapor Pressure Data
Hardcopy , PDF
English
14-04-2021
Important note : All end users must be registered with an Account prior to user licenses being assigned.| Committee |
E 37
|
| DocumentType |
Standard Practice
|
| Pages |
4
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Current
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| Supersedes |
1.1This 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 1:This 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.
1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
| ASTM E 1782 : 2014 | Standard Test Method for Determining Vapor Pressure by Thermal Analysis |
| ASTM E 1142 : 2022 | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1782 : 2014 | Standard Test Method for Determining Vapor Pressure by Thermal Analysis |
| ASTM E 1782 : 2022 | Standard Test Method for Determining Vapor Pressure by Thermal Analysis |
| ASTM E 1142 : 2022 : REV A | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2022 : REV C | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2015 : R2020 | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2021 : REV A | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2024 | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2022 : REV B | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2023 | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1142 : 2023 : REV B | Standard Terminology Relating to Thermophysical Properties |
| ASTM D 2879 : 2023 | Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope |
| ASTM E 1142 : 2021 | Standard Terminology Relating to Thermophysical Properties |
| ASTM D 2879 : 2018 | Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope |
| ASTM E 1142 : 2023 : REV A | Standard Terminology Relating to Thermophysical Properties |
| ASTM E 1719 : 2024 | Standard Test Method for Vapor Pressure of Liquids by Ebulliometry |
| ASTM E 1719 : 2012 : R2018 | Standard Test Method for Vapor Pressure of Liquids by Ebulliometry (Withdrawn 2023) |
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