ASTM E698-18
Standard Test Method for Kinetic Parameters for Thermally Unstable Materials Using Differential Scanning Calorimetry and the Flynn/Wall/Ozawa Method

Standard No.

ASTM E698-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E698-23

Latest

ASTM E698-23

Scope

1.1 This test method covers the determination of the overall kinetic parameters for exothermic reactions using the Flynn/ Wall/Ozawa method and differential scanning calorimetry. 1.2 This technique is applicable to reactions whose behavior can be described by the Arrhenius equation and the general rate law. 1.3 Limitations—There are cases where this technique is not applicable. Limitations may be indicated by curves departing from a straight line (see 11.2) or the isothermal aging test not closely agreeing with the results predicted by the calculated kinetic values. In particular, this test method is not applicable to reactions that are partially inhibited. The technique may not work with reactions that include simultaneous or consecutive reaction steps. This test method may not apply to materials that undergo phase transitions if the reaction rate is significant at the transition temperature. 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 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. 1.6 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.

ASTM E698-18 Referenced Document

• ASTM E1142 Standard Terminology Relating to Thermophysical Properties
• ASTM E1231 Standard Practice for Calculation of Hazard Potential Figures-of-Merit for Thermally Unstable Materials
• ASTM E1445 Standard Terminology Relating to Hazardous Potential of Chemicals
• ASTM E1860 Standard Test Method for Elapsed Time Calibration Thermal Analyzers
• ASTM E1970 Standard Practice for Statistical Treatment of Thermoanalytical Data*， 2023-01-01 Update
• ASTM E2890 Standard Test Method for Determination of Kinetic Parameters and Reaction Order for Thermally Unstable Materials by Differential Scanning Calorimetry Using the Kissinger and Farjas Methods*， 2021-10-01 Update
• ASTM E473 Standard Terminology Relating to Thermal Analysis
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ASTM E967 Standard Practice for Temperature Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers
• ASTM E968 Standard Practice for Heat Flow Calibration of Differential Scanning Calorimeters

ASTM E698-18 history

• 2023 ASTM E698-23 Standard Test Method for Kinetic Parameters for Thermally Unstable Materials Using Differential Scanning Calorimetry and the Flynn/Wall/Ozawa Method
• 2018 ASTM E698-18 Standard Test Method for Kinetic Parameters for Thermally Unstable Materials Using Differential Scanning Calorimetry and the Flynn/Wall/Ozawa Method
• 2016 ASTM E698-16 Standard Test Method for Kinetic Parameters for Thermally Unstable Materials Using Differential Scanning Calorimetry and the Flynn/Wall/Ozawa Method
• 2011 ASTM E698-11 Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials Using Differential Scanning Calorimetry and the Flynn/Wall/Ozawa Method
• 2005 ASTM E698-05 Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials
• 2004 ASTM E698-04 Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials
• 2001 ASTM E698-01 Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials
• 1999 ASTM E698-99 Standard Test Method for Arrhenius Kinetic Constants for Thermally Unstable Materials