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ASTM D4530-15(2020)
Standard Test Method for Determination of Carbon Residue (Micro Method)
Přeložit název
NORMA vydána dne 1.5.2020
Informace o normě:
Označení normy: ASTM D4530-15(2020)
Datum vydání normy: 1.5.2020
Kód zboží: NS-994976
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D4530-15(2020) :
Keywords:
carbon residue, carbon residue (micro method), diesel fuel, lubricating oil, petroleum products,, ICS Number Code 75.080 (Petroleum products in general)
Doplňující informace
| Significance and Use | ||||||||||||||
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5.1 The carbon residue value of the various petroleum materials serves as an approximation of the tendency of the material to form carbonaceous type deposits under degradation conditions similar to those used in the test method, and can be useful as a guide in manufacture of certain stocks. However, care needs to be exercised in interpreting the results. 5.2 This test method offers advantages of better control of test conditions, smaller samples, and less operator attention compared to Test Method D189, to which it is equivalent. 5.3 Up to twelve samples may be run simultaneously, including a control sample when the vial holder shown in Fig. 1 is used exclusively for sample analysis. FIG. 1 Sample Vial Holder and Vial |
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| 1. Scope | ||||||||||||||
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1.1 This test method covers the determination of the amount of carbon residue (see Note 1) formed after evaporation and pyrolysis of petroleum materials under certain conditions and is intended to provide some indication of the relative coke forming tendency of such materials. 1.2 The test results are equivalent to the Conradson Carbon Residue test (see Test Method D189). Note 1: This procedure is a modification of the original
method and apparatus for carbon residue of petroleum materials,
where it has been demonstrated that thermogravimetry is another
applicable technique.1.3 This test method is applicable to
petroleum products that partially decompose on distillation at
atmospheric pressure and was tested for carbon residue values of
0.10 % to 30 % (m/m). Samples expected to be below 0.10 weight %
(m/m) residue should be distilled to remove 90 % (V/V) of the flask
charge (see Section 9). The
10 % bottoms remaining is then tested for carbon residue by this
test method.
1.4 Ash-forming constituents, as defined by Test Method D482, or non-volatile additives present in the sample will add to the carbon residue value and be included as part of the total carbon residue value reported. 1.5 Also in diesel fuel, the presence of alkyl nitrates, such as amyl nitrate, hexyl nitrate, or octyl nitrate, causes a higher carbon residue value than observed in untreated fuel, which may lead to erroneous conclusions as to the coke-forming propensity of the fuel. The presence of alkyl nitrate in the fuel may be detected by Test Method D4046. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6.1 Exception—6.4 and 6.5 include inch-pound units. 1.7 1.8 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, health, and environmental practices and to determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||
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