ASTM D2425 - 19 - Standard Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry

ASTM D2425 - 19

Standard Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry

Status : Current   Published : January 2019



1.1 This test method covers an analytical scheme using the mass spectrometer to determine the hydrocarbon types present in conventional and synthesized hydrocarbons that have a boiling range of 160 °C to 343 °C (320 °F to 650 °F), 5 % to 95 % by volume  as determined by Test Method D86. Samples with average carbon number value of paraffins between C 12 and C 16 and containing paraffins from C 10 and C 18 can be analyzed. This test method is intended for use with full boiling range products that contain no significant olefin content. Eleven hydrocarbon types are determined. These include: paraffins, noncondensed cycloparaffins, condensed dicycloparaffins, condensed tricycloparaffins, alkylbenzenes, indans or tetralins, or both, C nH 2 n-10 (indenes, etc.), naphthalenes, C nH 2 n-14  (acenaphthenes, etc.), C nH 2 n-16 (acenaphthylenes, etc.), and tricyclic aromatics.

Note 1:  This test method was developed on Consolidated Electrodynamics Corporation Type 103 Mass Spectrometers. Operating parameters for users with a Quadrupole Mass Spectrometer are provided.

1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.3  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 determine the applicability of regulatory limitations prior to use. For a specific warning statement, see 11.1.

1.4  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.

Standard NumberASTM D2425 - 19
TitleStandard Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry
Publication Date15 January 2019
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors conventional hydrocarbons, hydrocarbon types, mass spectrometry, middle distillates, synthesized hydrocarbons
File Size152 KB

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