ASTM E928-03
Standard Test Method for Determination of Purity by Differential Scanning Calorimetry

Standard No.

ASTM E928-03

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E928-08

Latest

ASTM E928-19

Scope

1.1 This method describes the determination of purity of materials greater than 98.5 mole percent purity using differential scanning calorimetry and the van't Hoff equation.

1.2 This test method is applicable to thermally stable compounds with well-defined melting temperatures.

1.3 Determination of purity by this test method is only applicable when the impurity dissolves in the melt and is insoluble in the crystal.

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

Note 18212;Since all data treatments are not equivalent, it is the responsibility of the user to verify equivalency prior to use.

1.5 SI values are the standard.

1.6 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.

1.7 There is no ISO method equivalent to this method.

ASTM E928-03 Referenced Document

• ASTM E1970 Standard Practice for Statistical Treatment of Thermoanalytical Data
• ASTM E473 Standard Terminology Relating to Thermal Analysis
• ASTM E793 Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry
• 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 E928-03 history

• 2019 ASTM E928-19 Standard Test Method for Purity by Differential Scanning Calorimetry
• 2008 ASTM E928-08(2014) Standard Test Method for Purity by Differential Scanning Calorimetry
• 2008 ASTM E928-08 Standard Test Method for Determination of Purity by Differential Scanning Calorimetry
• 2003 ASTM E928-03 Standard Test Method for Determination of Purity by Differential Scanning Calorimetry
• 2001 ASTM E928-01 Standard Test Method for Determination of Purity by Differential Scanning Calorimetry
• 1996 ASTM E928-96 Standard Test Method for Determination of Purity by Differential Scanning Calorimetry