-
OLEFINS IN GASOLINES BY SUPERCRITICAL FLUID CHROMATOGRAPHY: ASTM D6550
OLEFINS IN GASOLINES BY SUPERCRITICAL FLUID CHROMATOGRAPHY: ASTM D6550EXPLANATIONGasoline-range olefinic hydrocarbons contribute to photo-chemical reactions in the atmosphere, which result in the formation of photochemical smog in susceptible urban areas. The California Air Resources Board (CARB) has ...
-
OLEFINS IN ENGINE FUELS BY GC: ASTM D6296
OLEFINS IN ENGINE FUELS BY GC: ASTM D6296EXPLANATIONThe quantitative determination of olefins in spark ignition engine fuels is required by government regulations. Knowledge of the total olefin content provides a means to monitor the efficiency of catalytic cracking processes. This test method can determine ...
-
OIL SEPARATION FROM GREASE (CONICAL SIEVE METHOD): ASTM D6184
OIL SEPARATION FROM GREASE (CONICAL SIEVE METHOD): ASTM D6184EXPLANATIONWhen a lubricating grease separates oil, the residual material changes in consistency which can affect the ability of the product to function as designed. Test results obtained with this procedure are intended to correlate with oil ...
-
OIL SEPARATION FROM GREASE BY CENTRIFUGING (KOPPERS METHOD): ASTM D4425
OIL SEPARATION FROM GREASE BY CENTRIFUGING (KOPPERS METHOD): ASTM D4425EXPLANATIONThis test method is useful in evaluating the degree to which a grease would separate into fluid and solid components when subjected to high centrifugal forces. Flexible shaft couplings, universal joints, and rolling element ...
-
OIL CONTENT OF PETROLEUM WAXES: ASTM D721
OIL CONTENT OF PETROLEUM WAXES: ASTM D721EXPLANATIONThe oil content of a wax may have significant effects on several of its properties such as strength, hardness, flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point, and oil straining. The importance of these ...
-
AUTOMOTIVE ENGINE OIL COMPATABILITY WITH TYPICAL SEAL ELASTOMERS: ASTM D7216
AUTOMOTIVE ENGINE OIL COMPATABILITY WITH TYPICAL SEAL ELASTOMERS: ASTM D7216EXPLANATIONSome engine oil formulations have been shown to lack compatibility with certain elastomers used for seals in automotive engines. These deleterious effects on the elastomer are greatest with new engine oils and when ...
-
ODOR OF PETROLEUM WAX: ASTM D1833
ODOR OF PETROLEUM WAX: ASTM D1833EXPLANATIONOdor intensity of wax is an important property in some uses of wax such as food packaging. It is often included in the specifications of petroleum wax. This method gives a basis for agreement between laboratories on the odor intensity of wax using a numerical ...
-
NITROGEN DETERMINATION KJELDAHL METHOD: ASTM D3228
NITROGEN DETERMINATION KJELDAHL METHOD: ASTM D3228EXPLANATIONThis test method is applicable for the determination of nitrogen in lubricating oils when present in the concentration from 0.03 to 0.10 weight %, and for the determination of nitrogen in fuel oils when present in the concentration from 0.015 ...
-
NITROGEN DETERMINATION OF CARBON, HYDROGEN, AND NITROGEN: ASTM D5291
NITROGEN DETERMINATION OF CARBON, HYDROGEN, AND NITROGEN: ASTM D5291EXPLANATIONThis is the only ASTM method for simultaneous determination of carbon, hydrogen, and nitrogen in petroleum products and lubricants. There are at least three instrumental techniques available for this analysis, each based on ...
-
NITROGEN DETERMINATION BY BOAT-INLET CHEMILUMINESCENCE: ASTM D5762
NITROGEN DETERMINATION BY BOAT-INLET CHEMILUMINESCENCE: ASTM D5762EXPLANATIONThis test method covers the determination of nitrogen in liquid hydrocarbons including petroleum process streams and lubricating oils in the concentration range from 40 to 10000 μg/g nitrogen. For light hydrocarbons containing ...
