ASTM-E794 Standard Test Method for Melting And Crystallization Temperatures By Thermal Analysis

ASTM-E794 - 2006 R18 EDITION - CURRENT
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Standard Test Method for Melting And Crystallization Temperatures By Thermal Analysis
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Scope

1.1 This test method describes the determination of melting (and crystallization) temperatures of pure materials by differential scanning calorimetry (DSC) and differential thermal analysis (DTA).

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

1.3 The normal operating range is from −120 to 600°C for DSC and 25 to 1500°C for DTA. The temperature range can be extended depending upon the instrumentation used.

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

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 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.

1.7 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.

Significance and Use

5.1 Differential scanning calorimetry and differential thermal analysis provide a rapid method for determining the fusion and crystallization temperatures of crystalline materials.

5.2 This test is useful for quality control, specification acceptance, and research.

Keywords

crystallization; differential scanning calorimeter; differential thermal analyzer; DSC; DTA; fusion; melting; temperature;

To find similar documents by ASTM Volume:

14.02 (General Test Methods; Forensic Psychophysiology; Forensic Sciences; Terminology; Conformity Assessment; Statistical Methods; Nanotechnology; Forensic Engineering; Manufacture of Pharmaceutical Products)

To find similar documents by classification:

17.200.10 (Heat. Calorimetry)

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Document Number

ASTM-E794-06(2018)

Revision Level

2006 R18 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

April 1, 2018

Document Type

Test Method

Page Count

4 pages

Committee Number

E37.01