Active Standard ASTM D6749 | Developed by Subcommittee: D02.07
Book of Standards Volume: 05.03
Historical (view previous versions of standard)
Significance and Use
5.1 The pour point of a petroleum product is an index of the lowest temperature of its utility for certain applications. Flow characteristics, like pour point, can be critical for the correct operation of lubricating systems, fuel systems, and pipeline operations.
5.4 This test method yields a pour point in a format similar to Test Method D97/IP 15 when the 3°C interval results are reported. However, when specification requires Test Method D97/IP 15, do not substitute this test method.
1.1 This test method covers the determination of pour point of petroleum products by an automatic apparatus that applies a slightly positive air pressure onto the specimen surface while the specimen is being cooled.
1.2 This test method is designed to cover the range of temperatures from −57 to +51°C; however, the range of temperatures included in the (1998) interlaboratory test program only covered the temperature range from −51 to −11°C.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D97 Test Method for Pour Point of Petroleum Products
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
Energy Institute StandardIP15 Test Method for Pour Point of Petroleum Products Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR, U.K., http://www.energyinst.org.uk.
ICS Number Code 75.080 (Petroleum products in general)