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Description of ASTM-E537 2024ASTM E537-24Active Standard: Standard Test Method for Thermal Stability of Chemicals by Differential Scanning CalorimetryASTM E537Scope 1.1 This test method describes the ascertainment of the presence of enthalpic changes in a test specimen, using minimum quantities of material, approximates the temperature at which these enthalpic changes occur and determines their enthalpies (heats) using differential scanning calorimetry or pressure differential scanning calorimetry. Note 1: Caution should be used if trying to use pressure differential scanning calorimetry to understand the thermal stability of a liquid or a solid (if it melts during the test or produces gas or liquid products), because the headspace volume to sample size is relatively large, so that the vaporization effect could significantly skew the results. Typically, the pressure differential scanning calorimeter would be limited to situations where a pressurized reactive headspace is required (that is, reactivity of a liquid or solid sample with a gas, more detail in Appendix X1). Sealed high-pressure sample containers are still recommended for the evaluation of intrinsic thermal stability of liquid or solid samples, even within a pressure DSC instrument. 1.2 This test method may be performed on solids, liquids, or slurries. 1.3 This test method may be performed in a sealed high-pressure sample container with an inert or a reactive headspace atmosphere with an absolute pressure range from 100 Pa through 30 MPa and over a temperature range from 273 K to 800 K (0 °C to 527 °C). 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4.1 Exceptions—Inch-pound units are provided as a courtesy to the user in X1.3.3, X1.4.1, and X1.4.2. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific safety precautions are given in Section 8. 1.6 This 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. Keywords differential scanning calorimetry; hazard potential; thermal analysis; thermal hazard; thermal stability; ICS Code ICS Number Code 07.030 (Physics. Chemistry) DOI: 10.1520/E0537-24 The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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