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About This Item

 

Full Description

1.1 This guide covers suggested procedures for the operation of a calorimetric device designed to obtain temperature and pressure data as a function of time for systems undergoing a physicochemical change under nearly adiabatic conditions.

1.2 This guide outlines the calculation of thermodynamic parameters from the time, temperature, and pressure data recorded by a calorimetric device.

1.3 The assessment outlined in this guide may be used over a pressure range from full vacuum to the rated pressure of the reaction container and pressure transducer. The temperature range of the calorimeter typically varies from ambient to 500°C, but also may be user specified (see 6.6).

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

1.5 This statement 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 practices and to determine the applicability of regulatory limitations prior to use. Specific safety precautions are outlined in Section 7.

 

Document History

  1. ASTM E1981-98(2012)e2

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    Standard Guide for Assessing Thermal Stability of Materials by Methods of Accelerating Rate Calorimetry

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  2. ASTM E1981-98(2012)e1


    Standard Guide for Assessing Thermal Stability of Materials by Methods of Accelerating Rate Calorimetry

    • Historical Version
  3. ASTM E1981-98(2004)


    Standard Guide for Assessing the Thermal Stability of Materials by Methods of Accelerating Rate Calorimetry

    • Historical Version
  4. ASTM E1981-98


    Standard Guide for Assessing the Thermal Stability of Materials by Methods of Accelerating Rate Calorimetry

    • Historical Version