ASTM D2425-17

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2425 − 17
Standard Test Method for
Hydrocarbon Types in Middle Distillates by Mass
1
Spectrometry
This standard is issued under the fixed designation D2425; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers an analytical scheme using the
D86Test Method for Distillation of Petroleum Products and
mass spectrometer to determine the hydrocarbon types present
Liquid Fuels at Atmospheric Pressure
invirginmiddledistillates204°Cto343°C(400°Fto650°F)
D2549Test Method for Separation of Representative Aro-
boiling range, 5% to 95% by volume as determined by Test
matics and Nonaromatics Fractions of High-Boiling Oils
Method D86. Samples with average carbon number value of
by Elution Chromatography
paraffins between C and C and containing paraffins from
12 16
C and C can be analyzed. Eleven hydrocarbon types are
10 18
3. Terminology
determined. These include: paraffins, noncondensed
3.1 The summation of characteristic mass fragments are
cycloparaffins, condensed dicycloparaffins, condensed
defined as follows:
tricycloparaffins, alkylbenzenes, indans or tetralins, or both,
+
∑71 (paraffins)=total peak height of m/e 71 + 85.
C H (indenes, etc.), naphthalenes, C H
n 2n-10 n 2n-14
∑67 (mono or noncondensed polycycloparaffins, or
(acenaphthenes, etc.),
+
both) = total peak height of m/e 67+68+69+81
C H (acenaphthylenes, etc.), and tricyclic aromatics.
n 2n-16
+82+83+96+97.
NOTE 1—This test method was developed on Consolidated Electrody- ∑123 (condensed dicycloparaffins)=total peak height of
+
namics Corporation Type 103 Mass Spectrometers.
m/e 123+124+137+138+··· etc. up to 249+250.
∑149 (condensed tricycloparaffins)=total peak height of
1.2 The values stated in SI units are to be regarded as the
+
m/e 149+150+163+164+··· etc. up to 247+248.
standard.
+
∑91 (alkyl benzenes) = total peak height of m/e
1.2.1 Exception—Theinch-poundunitsgiveninparentheses
91+92+105+106+··· etc. up to 175+176.
are for information only.
∑103 (indans or tetralins, or both)=total peak height of
+
1.3 This standard does not purport to address all of the m/e 103+104+117+118+··· etc. up to 187+188.
safety concerns, if any, associated with its use. It is the ∑115 (indenes or C H , or both)=total peak height of
n 2n-10
+
m/e 115+116+129+130+··· etc. up to 185+186.
responsibility of the user of this standard to establish appro-
+
128 (naphthalene)=total peak height of m/e 128.
priate safety, health, and environmental practices and deter-
+
∑141 (naphthalenes) = total peak height of m/e
mine the applicability of regulatory limitations prior to use.
141+142+155+156+··· etc. up to 239+240.
For a specific warning statement, see 10.1.
∑153 (acenaphthenes or C H , or both)=total peak
n 2n-14
1.4 This international standard was developed in accor-
+
height of m/e 153 + 154 + 167 + 168 + ··· etc. up to
dance with internationally recognized principles on standard-
251+252.
ization established in the Decision on Principles for the
∑151 (acenaphthylenes or C H , or both)=total peak
n 2n-16
Development of International Standards, Guides and Recom-
+
height of m/e 151 + 152 + 165 + 166 + ··· etc. up to
mendations issued by the World Trade Organization Technical
249+250.
Barriers to Trade (TBT) Committee.
+
∑177 (tricyclic aromatics) = total peak height of m/e
177+178+191+192+··· etc. up to 247+248.
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
2
Subcommittee D02.04.0M on Mass Spectroscopy. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2017. Published November 2017. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1965. Last previous edition approved in 2009 as D2425–04 (2009). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D2425-17. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2425 − 17
ics Corporation Type 103 Mass Spectrometers may have to develop their
4. Summary of Test Method
own operating parameters and calibration data.
4.1 Samples are separated into saturate and aromatic frac-
tions by Test Method D2549, and each fraction is analyzed by
9. Performance Test
mass spectrometry. The analysis is ba
...