Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography

SCOPE
1.1 This test method covers the determination of the total nonaromatic hydrocarbons, and trace monocyclic aromatic hydrocarbons in the purity of toluene and mixed xylenes by gas chromatography.
1.2 Nonaromatic aliphatic hydrocarbons containing 1 through 10 carbon atoms (methane through decanes) can be detected by this test method at concentrations ranging from 0.001 % to 2.500 weight %.
1.2.1 A small amount of benzene in mixed xylenes may not be distinguished from the nonaromatics and the concentrations are determined as a composite.
1.3 Monocyclic aromatic hydrocarbon impurities containing 6 through 9 carbon atoms (benzene through C9 aromatics) can be detected by this test method at individual concentrations ranging from 0.001 % to 1.000 weight %.
1.4 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E 29.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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. For specific hazard statement, see Section 9.

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Historical
Publication Date
31-May-2007
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ASTM D2360-07 - Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 2360 – 07
Standard Test Method for
Trace Impurities in Monocyclic Aromatic Hydrocarbons by
1
Gas Chromatography
This standard is issued under the fixed designation D2360; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
2
1.1 This test method covers the determination of the total 2.1 ASTM Standards:
nonaromatic hydrocarbons, and trace monocyclic aromatic D841 Specification for Nitration Grade Toluene
hydrocarbonsinthepurityoftolueneandmixedxylenesbygas D2306 Test Method for C Aromatic Hydrocarbon Analy-
8
3
chromatography. sis by Gas Chromatography
1.2 Nonaromatic aliphatic hydrocarbons containing 1 D3437 Practice for Sampling and Handling Liquid Cyclic
through 10 carbon atoms (methane through decanes) can be Products
detected by this test method at concentrations ranging from D3797 Test Method for Analysis of o-Xylene by Gas
0.001% to 2.500 weight %. Chromatography
1.2.1 Asmall amount of benzene in mixed xylenes may not D3798 Test Method for Analysis of p-Xylene by Gas
be distinguished from the nonaromatics and the concentrations Chromatography
are determined as a composite. D4492 Test Method for Analysis of Benzene by Gas
1.3 Monocyclicaromatichydrocarbonimpuritiescontaining Chromatography
6 through 9 carbon atoms (benzene through C aromatics) can D4790 Terminology of Aromatic Hydrocarbons and Re-
9
be detected by this test method at individual concentrations lated Chemicals
ranging from 0.001% to 1.000 weight %. D5211 Specification for Xylenes for p-Xylene Feedstock
1.4 In determining the conformance of the test results using D6809 Guide for Quality Control and Quality Assurance
this method to applicable specifications, results shall be Procedures for Aromatic Hydrocarbons and Related Ma-
rounded off in accordance with the rounding-off method of terials
PracticeE29. E29 Practice for Using Significant Digits in Test Data to
1.5 The values stated in SI units are to be regarded as Determine Conformance with Specifications
standard. No other units of measurement are included in this E260 Practice for Packed Column Gas Chromatography
standard. E355 Practice for Gas Chromatography Terms and Rela-
1.6 This standard does not purport to address all of the tionships
safety concerns, if any, associated with its use. It is the E691 Practice for Conducting an Interlaboratory Study to
responsibility of the user of this standard to establish appro- Determine the Precision of a Test Method
priate safety and health practices and determine the applica- E1510 Practice for Installing Fused Silica Open Tubular
bility of regulatory limitations prior to use. For specific hazard Capillary Columns in Gas Chromatographs
statement, see Section 9.
1
This test method is under the jurisdiction of ASTM CommitteeD16 on
2
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Derivatives. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved June 1, 2007. Published June 2007. Originally the ASTM website.
3
approved in 1966. Last previous edition approved in 2004 as D2360–04a. Withdrawn.
*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.
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D2360–07
TABLE 1 Instrumental Parameters
2.2 Other Document:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and Detector Flame ionization
4 Column:
1910.1200
Tubing fused silica
A
Stationary phase crosslinked polyethylene glycol
3. Terminology
Film thickness, µ 0.25
Length, m 60
3.1 Definitions:
Diameter, mm 0.32 ID
3.1.1 For definition of terms used in this test method see
Temperatures:
Injector, °C 270
Terminology D4790.
Detector, °C 300
Oven:
4. Summary of Test Method
Initial, °C 60
Time 1, min 10
4.1 Aknown amount of an internal standard is added to the
Final, °C 150
specimen that is then introduced into a gas chromatograph
Rate, °C/min 5
(GC) equipped with a flame ionization detector (FID). The
Time 2, min 10
Carrier gas helium
peak area of each impurity and the internal standard is
Flow rate, mL/min 1.0
measured and the amount of each impurity is calculated from
Split ratio 100:1
the ratio of the
...

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