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NITROGEN DETERMINATION TRACE NITROGEN BY OXIDATIVE COMBUSTION AND CHEMILUMINESCE
NITROGEN DETERMINATION TRACE NITROGEN BY OXIDATIVE COMBUSTION AND CHEMILUMINESCENCE DETECTION: ASTM D4629GENERALThe concentration of nitrogen is a measure of the presence of nitrogen-containing additives. Knowledge of its concentration can be used to predict performance.There are two ways of determining ...
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NEEDLE PENETRATION OF PETROLEUM WAXES: ASTM D1321
NEEDLE PENETRATION OF PETROLEUM WAXES: ASTM D1321(Equivalent Test Methods: IP 49, DIN 51579, and AFNOR T66-004)EXPLANATIONPetroleum waxes differ in hardness. Hardness may have a significant effect upon other physical properties. Needle penetration is a measurement of hardness. This method is applicable ...
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NAPTHALENE HYDROCARBONS IN AVIATION TURBINE FUELS BY ULTRAVIOLET (UV) SPECTROPHO
NAPTHALENE HYDROCARBONS IN AVIATION TURBINE FUELS BY ULTRAVIOLET (UV) SPECTROPHOTOMETRY: ASTM D1840EXPLANATIONNapthalenes when burned tend to have a relatively larger contribution to a sooty flame, smoke, and thermal radiation than single ring aromatics. This test method covers the determination of the ...
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METHYL TERT-BUTYL ETHER IN GASOLINE BY INFRARED SPECTROSCOPY: ASTM D5845
METHYL TERT-BUTYL ETHER IN GASOLINE BY INFRARED SPECTROSCOPY: ASTM D5845EXPLANATIONSee the discussion under Test Method ASTM D4815. This infrared method is faster, simpler, less expensive and more portable than the current methods. It measures MTBE and other alcohols in the concentration ranges from ...
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METHYL TERT-BUTYL ETHER IN GASOLINE BY GC: ASTM D4815
METHYL TERT-BUTYL ETHER IN GASOLINE BY GC: ASTM D4815EXPLANATIONEthers, alcohols, and other oxygenates can be added to gasoline to increase octane number and to reduce emissions. Type and concentration of various oxygenates are specified and regulated to ensure acceptable commercial gasoline quality. ...
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METHYL TERT-BUTYL ETHER BY GAS CHROMATOGRAPHY: ASTM D5441
METHYL TERT-BUTYL ETHER BY GAS CHROMATOGRAPHY: ASTM D5441EXPLANATIONThe presence of impurities in methyl tert-butyl ether (MTBE) can have a deleterious effect upon the value of MTBE as a gasoline additive. Oxygenates and olefins if present are of primary concern. This test method provides for the determination ...
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MOISTURE OF GREEN PETROLEUM COKE: ASTM D4931
MOISTURE OF GREEN PETROLEUM COKE: ASTM D4931EXPLANATIONMoisture adds weight to coke and serves no useful purpose. Acknowledgement of moisture is thus important in the purchase and sale of green petroleum coke. This test method covers both the preparation procedure for samples containing free water, and ...
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MOISTURE CORROSION RESISTANCE OF AUTOMOTIVE GEAR LUBRICANTS: ASTM D7038
MOISTURE CORROSION RESISTANCE OF AUTOMOTIVE GEAR LUBRICANTS: ASTM D7038EXPLANATIONThis test simulates a type of severe field service in which corrosion-promoting moisture in the form of condensed water vapor accumulates in the axle assembly. This may happen as a result of volume expansion and contraction ...
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MOLECULAR WEIGHT OF PETROLEUM OILS: ASTM D2502
MOLECULAR WEIGHT OF PETROLEUM OILS: ASTM D2502EXPLANATIONThis test method calculates molecular weight of petroleum oils from kinematic viscosity measurements at 100 and 210° F. It is applicable to samples with molecular weights in the range from 250 to 700 and is intended for use with average petroleum ...
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MOLECULAR WEIGHT OF HYDROCARBONS: ASTM D2503
MOLECULAR WEIGHT OF HYDROCARBONS: ASTM D2503EXPLANATIONMolecular weight is a fundamental physical constant that can be used in conjunction with other physical properties to characterize pure hydrocarbons and their mixtures. A knowledge of molecular weight is necessary for the application of a number ...
