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ASTM-E1641:2012 Edition

ASTM-E1641:2012 Edition

$40.63

E1641-07(2012) Standard Test Method for Decomposition Kinetics by Thermogravimetry

Published By Publication Date Number of Pages
ASTM 2012 6
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ASTM E1641-07-Reapproved2012

Historical Standard: Standard Test Method for Decomposition Kinetics by Thermogravimetry

ASTM E1641

Scope

1.1 This test method describes the determination of the kinetic parameters, Arrhenius activation energy, and preexponential factor by thermogravimetry, based on the assumption that the decomposition obeys first-order kinetics.

1.2 This test method is generally applicable to materials with well-defined decomposition profiles, namely, a smooth, continuous mass change with a single maximum rate.

1.3 This test method is normally applicable to decomposition occurring in the range from 400 to 1300K (100 to 1000 °C). The temperature range may be extended depending on the instrumentation used.

1.4 Computer or electronic-based instruments, techniques, or data treatment equivalent to this test method may also be used.

Note 1—Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. It is the responsibility of the user of this test method to determine the necessary equivalency prior to use.

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

1.6 This method is similar to ISO 11358-2 but differs in its mathematical treatment.

1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

Arrhenius activation energy; Arrhenius pre-exponential factor; kinetic parameters; thermal decomposition; thermogravimetric analysis

ICS Code

ICS Number Code 71.040.40 (Chemical analysis)

DOI: 10.1520/E1641-07R12

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