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1.1 This test method covers the determination of the amount of carbon residue (Note 1) left after evaporation and pyrolysis of an oil, and is intended to provide some indication of relative coke-forming propensity. This test method is generally applicable to relatively nonvolatile petroleum products which partially decompose on distillation at atmospheric pressure. Petroleum products containing ash-forming contituents as determined by Test Method D 482, will have an erroneously high carbon residue, depending upon the amount of ash formed (Notes 2 and 3).

Note 1 - The term carbon residue is used throughout this test method to designate the carbonaceous residue formed during evaporation and pyrolysis of a petroleum product. The residue is not composed entirely of carbon, but is a coke which can be further changed by pyrolysis. The term carbon residue is continued in this test method only in deference to its wide common usage.

Note 2 - Values obtained by this test method are not numerically the same as those obtained by Test Method D189, or Test Method D4530. Approximate correlations have been derived (see Fig. X2.1) but need not apply to all materials which can be tested because the carbon residue test is applicable to a wide variety of petroleum products. The Ramsbottom Carbon Residue test method is limited to those samples that are mobile below 90°C.

Note 3 - 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 can lead to erroneous conclusions as to the coke-forming propensity of the fuel. The presence of alkyl nitrate in the fuel can be detected by Test Method D4046.

1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.

 

Document History

  1. ASTM D524-15(2019)


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Most Recent
  2. ASTM D524-15


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  3. ASTM D524-10


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  4. ASTM D524-09


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  5. ASTM D524-04


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  6. ASTM D524-03

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    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  7. ASTM D524-00e1


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  8. ASTM D524-00


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version
  9. ASTM D524-88


    Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products

    • Historical Version