Designation: E 1269 - 01 Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry This standard is issued under the fixed designation E 1269; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Anumber in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope E 1142 Terminology Relating to Thermophysical Proper 1.1 This test method covers the determination of specific ties? 2.2 ISO Standard: heat capacity by differential scanning calorimetry. 1.2 This test method is generally applicable to thermally ISO11357-4Plastics- Differential Scanning Calorimetry (DSC)- Determination of Specific Heat Capacity3 stable solids and liquids. 1.3 The normal operating range of the test is from - 100 to 2.3 Japanese Industrial Standard: 600°C. The temperature range can be extended, depending K 7123 Testing Methods for Specific Heat Capacity of upon the instrumentation and specimen holders used. Plastics3 1.4 The values stated in SI units are to be regarded as the 3. Terminology standard. 1.5 Computer or electronic-based instrumentation, tech- 3.1 Definitions-Technical terms used in this test method niques, or data treatment equivalent to this test method may be are described in Terminologies E 473 and E 1142. used. 4. Summary of Test Method Nore 1-Users of this test method are expressly advised that all such 4.1 Thistestmethodconsists ofheatingthetestmaterial at instruments or techniques may not be equivalent. It is the responsibility of a controlled rate in a controlled atmosphere through the region the user of this test method to determine equivalency prior to use ofinterest.Thedifferenceinheatflow intothetestmaterialand 1.6 This method is similar to ISO 11357-4, but contains a reference material or blank due to energy changes in the additional methodology not found in that method. Additionally, material is continually monitored and recorded. ISO 11357-4 contains practices not found in this standard. This methodissimilartoJapaneseIndustrialStandardK7123,but 5. Significance and Use contains additional methodologynotfound in that method. 5.1 Differential scanning calorimetric measurements pro- 1.7 This standard does not purport to address all of the vide a rapid, simple method for determining specific heat safetyconcerns,if any,associated with its use.It is the capacities of materials. responsibility of the user of this standard to establish appro- 5.2 Specific heat capacities are important for reactor and priate safety and health practices and determine the applica- cooling system design purposes, quality control, and research bility of regulatory limitations prior to use. Specific precau- and development. tionary statements are given in Section 9. 6. Interferences 2. Referenced Documents 6.1 Since milligram quantities of specimen are used, it is 2.1 ASTM Standards: essential that specimens are homogeneous and representative. E 473 Terminology Relating to Thermal Analysis? 6.2 The occurrence of chemical changes or mass loss on E 967 Practice for Temperature Calibration of Differential heating during the measurement may invalidate the test. Scanning Calorimeters and Differential Thermal Analyz- Therefore, the temperature range and specimen holders should ers? be chosen so as to avoid these processes. E 968 Practice for Heat Flow Calibration of Differential Scanning Calorimeters and Differential Thermal Analyz- 7. Apparatus ers? 7.1 Differential Scanning Calorimeter (DSC)—The essen- tial instrumentation required to provide the minimum differen- tial scanning calorimetric capability for this method includes: 1 This test method is under the jurisdiction ofASTM Committee E37 on Thermal 7.1.1 DSC Test Chamber, composed of the following: Measurement and is the direct responsibility of Subcommittee E37.01 on Test Methods an