ASTM-D6743 2001

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D6743-01e1 Standard Test Method for Thermal Stability of Organic Heat Transfer Fluids

Published By	Publication Date	Number of Pages
ASTM	2001	4

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Categories: 27.060.30 - Boilers and heat exchangers, ASTM

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Description

ASTM D6743-01e1

Historical Standard: Standard Test Method for Thermal Stability of Organic Heat Transfer Fluids

ASTM D6743

Scope

1.1 This test method covers the determination of the thermal stability of unused organic heat transfer fluids. The procedure is applicable to fluids used for the transfer of heat at temperatures both above and below their boiling point (refers to normal boiling point throughout the text unless otherwise stated). It is applicable to fluids with maximum bulk operating temperature between 260°C (500°F) and 454°C (850°F). The procedure shall not be used to test a fluid above its critical temperature. In this test method, the volatile decomposition products are in continuous contact with the fluid during the test. This test method will not measure the thermal stability threshold (the temperature at which volatile oil fragments begin to form), but instead will indicate bulk fragmentation occurring for a specified temperature and testing period. Because potential decomposition and generation of high pressure gas may occur at temperatures above 260°C (500°F), do not use this test method for aqueous fluids or other fluids which generate high-pressure gas at these temperatures.

1.2 DIN Norm 51528 covers a test method that is similar to this test method.

1.3 The applicability of this test method to siloxane-based heat transfer fluids has not been determined.

1.4 The values stated in SI are the standard. The values provided in parentheses are for information only.

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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 7.2, 8.8, 8.9 and 8.10.

Keywords

heat transfer fluids; thermal degradation; thermal fluids; thermal stability

ICS Code

ICS Number Code 27.060.30 (Boilers and heat exchangers)

DOI: 10.1520/D6743-01E01

Additional information

Standard Title	D6743-01e1 Standard Test Method for Thermal Stability of Organic Heat Transfer Fluids
Published Code	ASTM
Publication Date	2001
Pages Count	4
ICS Codes	27.060.30 - Boilers and heat exchangers