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Normas ASTM – AENOR
ASTM D7840-12

ASTM D7840-12

Standard Test Method for Foaming Tendencies of Non-Aqueous Engine Coolants in Glassware

Fecha:
2017-04-06 /Historical
Superseeded by:
Significance and Use:

5.1 In the test method, coolants generally will be distinguished that have a tendency to foam excessively from those that are suitable for further evaluation to determine performance in actual service.

Note 1In use, the foaming tendency of a coolant solution may be increased by service aging or contamination. A properly functioning pressure cap will tend to suppress foaming in coolant solutions.
Scope:

1.1 This test method covers a simple glassware test for evaluating the tendency of non-aqueous engine coolants to foam under laboratory controlled conditions of aeration and temperature.

1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.3 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 warning statements, see 7.2 and 7.3.

Keywords:
engine coolants; foaming; glassware; non-aqueous
50,71
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