1、Designation: D4175 15cD4175 16Standard Terminology Relating toPetroleum, Petroleum Products, Liquid Fuels, andLubricants1This standard is issued under the fixed designation D4175; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This terminology stand
3、ard covers the compilation of terminology developed by Committee D02 on Petroleum Products,Liquid Fuels, and Lubricants, except that it does not include terms/definitions specific only to the standards in which they appear.1.1.1 The terminology, mostly definitions, is unique to petroleum, petroleum
4、products, lubricants, and certain products frombiomass and chemical synthesis. Meanings of the same terms outside of applications to petroleum, petroleum products, andlubricants can be found in other compilations and in dictionaries of general usage.1.1.2 The terms/definitions exist in two places: (
5、1) in the standards in which they appear and (2) in this compilation.2. Terminology2.1 Alphabetical listing of terms with definitions for each term showing attributions as to source and subcommittee jurisdictionis in bold print following the definition. Those showing no attributes are under the juri
6、sdiction of Subcommittee CS 95. Someabbreviations, acronyms, and symbols are included in the list.3-MPA, n3-methylphenylamine D02.J0 D6812AAS, natomic absorption spectrometry, an analytical technique for measuring metal content of solutions, based on a combinationof flame source, hollow cathode lamp
7、, photomultiplier, and a readout device. D02.03 D7876abrasion, nwear due to hard particles or hard protuberances forced against and moving along a solid surface.D02.B0 D4998abrasive wearwear due to hard particles or hard protuberances forced against and moving along a solid surface. D02.L0D5182absol
8、ute filtration rating, nthe diameter of the largest hard spherical particle that will pass through a filter under specified testconditions. This is an indication of the largest opening in the filter element. D02.N0 D4174absorbance, nlogarithm to the base 10 of the ratio of the reciprocal of the tran
9、smittance. D02.03 D7740absorbance, A,nthe molecular property of a substance that determines its ability to take up radiant power, expressed by:A 5log10 1/T!52log10Twhere T is the transmittance.DISCUSSIONAbsorbance expresses the excess absorption over that of a specified reference or standard. It is
10、implied that compensation has been affected forreflectance losses, solvent absorption losses, and refractive effects, if present, and that attenuation by scattering is small compared with attenuation byabsorption. D02.04 D20081 This terminology is under the jurisdiction ofASTM Committee D02 on Petro
11、leum Products, Liquid Fuels, and Lubricants and is the direct responsibility of SubcommitteeD02.95 on Terminology.Current edition approved Oct. 15, 2015Jan. 1, 2016. Published November 2015February 2016. Originally approved in 1983. Last previous edition approved in 2015 asD4175 15bD4175 15c.1. DOI:
12、 10.1520/D4175-15C.10.1520/D4175-16.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM rec
13、ommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C
14、700, West Conshohocken, PA 19428-2959. United States1absorptivity, a,nthe specific property of a substance to absorb radiant power per unit sample concentration and path length,expressed by:a 5Af/bcwhere:A = the absorbance,f = the dilution factor,b = sample cell path length, andc = the quantity of a
15、bsorbing substance contained in a volume of solvent.D02.04 D2008acceptance limit (AL), na numerical value that defines the point between acceptable and unacceptable quality.DISCUSSIONThe AL is not necessarily the specification limit. It is the value that takes into account the specification value, t
16、he test method precision, and theconfidence level desired for defining minimum acceptable quality relative to the specification value.D02.94 D3244accepted reference value (ARV), nvalue that serves as an agreed-upon reference for comparison and that is derived as (1) atheoretical or established value
17、, based on scientific principles, (2) an assigned value, based on experimental work of somenational or international organization, such as the U.S. National Institute of Standards andTechnology (NIST), or (3) a consensusvalue, based on collaborative experimental work under the auspices of a scientif
18、ic or engineering group.DISCUSSIONIn the context of this test method, accepted reference value is understood to apply to the ignition delay of specific reference materials determined underreproducibility conditions by collaborative experimental work. D02.01 D6890, D02.94 D6299, D6792DISCUSSIONIn the
19、 context of this test method, accepted reference value is understood to apply to the Research octane number of specific reference materialsdetermined empirically under reproducibility conditions by the National Exchange Group or another recognized exchange testing organization.D02.01 D2699, D2700DIS
20、CUSSIONIn the context of this method, accepted reference value is understood to apply to the ignition delay of specific reference materials determined underreproducibility conditions by collaborative experimental work. D02.01 D7170DISCUSSIONIn the context of this test method, accepted reference valu
21、e is understood to apply to the Supercharge and octane number ratings of specific referencematerials determined empirically under reproducibility conditions by the National Exchange Group or another recognized exchange testingorganization. D02.01 D909accepted reference value (ARV), na value that ser
22、ves as an agreed-upon reference for comparison, and which is derived as:(1) a theoretical or established value, based on scientific principles, (2) an assigned or certified value, based on experimentalwork of some national or international organization, or (3) a consensus or certified value, based o
23、n collaborative experimentalwork under the auspices of a scientific or engineering group. D02.25 D3764; D02.01 D613accuracy, nthe closeness of agreement between a test result and an accepted reference value. D02.94 D6792accuracy, nthe closeness of agreement between an observed value and an accepted
24、reference value.D02.94 D6299, D7372acid number, nthe quantity of a specified base, expressed in milligrams of potassium hydroxide per gram of sample, requiredto titrate a sample in a specified solvent to a specified endpoint using a specified detection system.DISCUSSIOND4175 162In this test method,
25、acids or salts with dissociation constants greater than 109, are titrated to a green end point with p-naphtholbenzein indicator.D02.06 D3339DISCUSSIONIn this test method, the acid number is calculated from the number of drops required to produce a change in solution color from blue-green to orange,c
26、ompared to the number of drops required to produce an identical color change using a reference standard. Because this is a direct comparison method,the acid number value can be reported in milligrams of potassium hydroxide per gram of sample. D02.06 D5770DISCUSSIONIn this test method, the indicator
27、is p-naphtholbenzein titrated to a green/green-brown end point in a toluene-water-isopropanol solvent. D02.06D974DISCUSSIONThis test method expresses the quantity of base as milligrams of potassium hydroxide per gram of sample, that is required to titrate a sample in amixture of toluene and propan-2
28、-ol to which a small amount of water has been added from its initial meter reading in millivolts to a meter readingin millivolts corresponding to an aqueous basic buffer solution or a well-defined inflection point as specified in the test method. D02.06 D664DISCUSSIONThis test method provides additi
29、onal information. The quantity of base, expressed as milligrams of potassium hydroxide per gram of sample, requiredto titrate a sample in the solvent from its initial meter reading in millivolts to a meter reading in millivolts corresponding to a freshly prepared aqueousacidic buffer solution or a w
30、ell-defined inflection point as specified in the test method shall be reported as the strong acid number. D02.06 D664DISCUSSIONThe causes and effects of the so-called strong acids and the causes and effects of the other acids can be very significantly different. Therefore, the userof this test metho
31、d shall differentiate and report the two, when they are found. D02.06 D664acidity, nthe quality, state or degree of being acid.DISCUSSIONIn this test method, the criterion for acidity is a pink or red color when methyl orange indicator is used. D02.06 D1093across (or against) grain, ndirection in a
32、body with preferred orientation due to forming stresses that has the maximum c-axisalignment as measured in an X-ray diffraction test. D02.F0 C709activated sludge, nthe precipitated solid matter, consisting mainly of bacteria and other aquatic microorganisms, that is producedin a domestic wastewater
33、 treatment plant; activated sludge is used primarily in secondary sewage treatment to microbiallyoxidized dissolved organic matter in the effluent. D02.12 D6139activation energy (Ea)measure of temperature effects on the rate of oxidation in the kinetic, or chemical control, regime.Activation energy
34、is calculated from the Arrhenius equation:OR5Zexp2Ea/RT!where:OR = oxidation rate,R = 8.314 J mole-1 K-1 is the universal gas constant,T = absolute temperature (in Kelvin), andZ = pre-exponential factor.The activation energy and pre-exponential factor are calculated from linearized form of Arrhenius
35、 equation, that is, from theslope and intercept of the linear plot of the logarithm of oxidation rate versus the inverse of absolute temperature (1/T):log10 OR!5log10 Z 2Ea/2.303 RT!Activation energy is expressed in units of kJ/mol. Pre-exponential factor is expressed in the same units as the oxidat
36、ion rates,namely g h-1 m-2 (for Za calculated from area-normalized oxidation rates, ORa) or g g-1 h-1 (for Zw calculated from weight-normalized oxidation rates, ORw). D02.F0 D7542D4175 163active grease-sampling device, ndevice designed to take an active sample of a lubricating grease from a bearing,
37、 gear, or driveshaft located in a grease-lubricated component. D02.G0 D7718active sampling, vto use a sampling device to actively gather an in-service lubricating grease sample from a grease-lubricatedcomponent. D02.G0 D7718actuate, vto hold the interior cylinder of the active grease-sampling device
38、 while pushing the exterior cylinder forward towardthe grease-lubricated component that is being sampled allowing lubricating grease to fill the sampling device. D02.G0 D7718acute ecotoxicity, nthe propensity of a material to produce adverse behavioral, biochemical, or physiological effects innon-hu
39、man organisms or populations in a short period of time, usually not constituting a substantial portion of the life span ofthe organism. D02.N0 D6046acute ecotoxicity, nthe propensity of a test material to produce adverse behavioral, biochemical or physiological effects innon-human organisms or popul
40、ations in a short period, usually not constituting a substantial portion of the life span. D02.12D6384acute ecotoxicity test, na comparative ecotoxicity test in which a representative subpopulation of organisms is exposed todifferent treat rates of a test material and is observed for a short period,
41、 usually not constituting a substantial portion of theirlife span. D02.12 D6384acute toxicity test, na comparative toxicity test in which a representative subpopulation of organisms is exposed to different treatrates of a test material and is observed for a short period usually not constituting a su
42、bstantial portion of their life span. D02.12D6081additive, na material added to another, usually in small amounts, to impart or enhance desirable properties or to suppressundesirable properties. D02.B0 D5862additive, nsubstance added to a base aviation gasoline in relatively small amounts that eithe
43、r enables that base aviation gasolineto meet the applicable specification properties or does not alter the applicable specification properties of that base aviationgasoline beyond allowable limits. D02.J0 D7826adenosine monophosphate, nmolecule formed by the removal of two (2) molecules of phosphate
44、 (one pyrophosphate molecule)from ATP. D02.14 D7463adenosine triphosphate, nmolecule comprised of a purine and three phosphate groups, that serves as the primary energytransport molecule in all biological cells.D02.14 D7463adherent insolubles (formerly adherent gum), nmaterial that is produced in th
45、e course of stressing distillate fuel under theconditions of this test and which adheres to the glassware after fuel has been flushed from the system. D02.14 D7462adhesive wear(scuffing), nwear due to localized bonding between contacting solid surfaces leading to material transfer betweenthe two sur
46、faces or loss from either surface. D02.L0 D5182adiabaticity, nthe condition in which there is no significant gain or loss of heat throughout the length of the column.DISCUSSIONWhen distilling a mixture of compounds as is the case of crude petroleum, there will be a normal increase in reflux ratio do
47、wn the column. In the casewhere heat losses occur in the column, the internal reflux is abnormally greater than the reflux in the head. The opposite is true when the column gainsheat, as with an overheated mantle. D02.08 D2892adjustment, noperation of bringing the portable digital density meter to a
48、 state of performance suitable for its use, by settingor adjusting the instrument constants.D02.04 D7777aerobe, nan organism that requires oxygen to remain metabolically active.DISCUSSIONAerobes use oxygen as their terminal electron acceptor in their primary energy-generating metabolic pathways. Aer
49、obes require oxygen for survival,using aerobic metabolic processes to generate energy for growth and survival. D02.14 D6469aerobic, adj(1) taking place in the presence of oxygen; (2) living or active in the presence of oxygen.D02.N0 D6006, D6046D4175 164AETabbreviation for atmospheric equivalent temperature.agglomerate, nin manufactured carbon and graphite product technology, composite particle containing a number of grains.D02.F0
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