ASTM E698-01 - 10.4.2001
 
1. Scope

1.1 This method covers the determination of the overall kinetic parameters for exothermic reactions.

1.2 The kinetic parameters are obtained from differential scanning calorimetry (DSC) curves (see Section 3).

1.3 This technique is applicable to reactions whose behavior can be described by the Arrhenius equation and the general rate law.

1.4 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 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 method may not apply to materials that undergo phase transitions if the reaction rate is significant at the transition temperature.

1.5 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

E1860-23

Standard Test Method for Elapsed Time Calibration of Thermal Analyzers

E691-23

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E1231-19

Standard Practice for Calculation of Hazard Potential Figures of Merit for Thermally Unstable Materials

E1445-08(2023)

Standard Terminology Relating to Hazard Potential of Chemicals

E473-23b

Standard Terminology Relating to Thermal Analysis and Rheology (Includes all amendments and changes 10/5/2023).

E1970-23

Standard Practice for Statistical Treatment of Thermoanalytical Data

E2890-21

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

E968-02

Standard Practice for Heat Flow Calibration of Differential Scanning Calorimeters

E1142-23b

Standard Terminology Relating to Thermophysical Properties (Includes all amendments and changes 10/5/2023).