ASTM D5917-15(2019)
(Test Method)Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and External Calibration
Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and External Calibration
SIGNIFICANCE AND USE
5.1 Determining the type and amount of hydrocarbon impurities remaining from the manufacture of toluene, mixed xylenes, and p-xylenes used as chemical intermediates and solvents is often required. This test method is suitable for setting specifications and for use as an internal quality control tool where these products are produced or are used. Typical impurities are: alkanes containing 1 to 10 carbons atoms, benzene, toluene, ethylbenzene (EB), xylenes, and aromatic hydrocarbons containing nine carbon atoms.
5.2 Purity is commonly reported by subtracting the determined expected impurities from 100.00. However, a gas chromatographic analysis cannot determine absolute purity if unknown or undetected components are contained within the material being examined.
5.3 This test method is similar to Test Method D2360, however, interlaboratory testing has indicated a bias may exist between the two methods. Therefore the user is cautioned that the two methods may not give comparable results.
SCOPE
1.1 This test method covers the determination of the total nonaromatic hydrocarbons and trace monocyclic aromatic hydrocarbons in toluene, mixed xylenes, and p-xylene by gas chromatography. The purity of toluene, mixed xylenes, or p-xylene can also be calculated. Calibration of the gas chromatographic system is done by the external standard calibration technique. A similar test method, using the internal standard calibration technique, is Test Method D2360.
1.2 Total 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 or p-xylenes may not be distinguished from the nonaromatics and the concentrations are determined as a composite (see 6.1).
1.3 Monocyclic aromatic hydrocarbon impurities containing 6 through 10 carbon atoms (benzene through C10 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 to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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 specific hazard statement, see Section 9.
1.7 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.
General Information
Relations
Standards Content (Sample)
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.
Designation: D5917 − 15 (Reapproved 2019)
Standard Test Method for
Trace Impurities in Monocyclic Aromatic Hydrocarbons by
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Gas Chromatography and External Calibration
This standard is issued under the fixed designation D5917; 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 ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This test method covers the determination of the total
mendations issued by the World Trade Organization Technical
nonaromatic hydrocarbons and trace monocyclic aromatic
Barriers to Trade (TBT) Committee.
hydrocarbons in toluene, mixed xylenes, and p-xylene by gas
chromatography. The purity of toluene, mixed xylenes, or
2. Referenced Documents
p-xylene can also be calculated. Calibration of the gas chro-
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2.1 ASTM Standards:
matographic system is done by the external standard calibra-
D841Specification for Nitration Grade Toluene
tion technique. A similar test method, using the internal
D2360Test Method for Trace Impurities in Monocyclic
standard calibration technique, is Test Method D2360.
Aromatic Hydrocarbons by Gas Chromatography (With-
1.2 Total aliphatic hydrocarbons containing 1 through 10
3
drawn 2016)
carbon atoms (methane through decanes) can be detected by
D3437Practice for Sampling and Handling Liquid Cyclic
this test method at concentrations ranging from 0.001 to 2.500
Products
weight %.
D4052Test Method for Density, Relative Density, and API
1.2.1 A small amount of benzene in mixed xylenes or
Gravity of Liquids by Digital Density Meter
p-xylenesmaynotbedistinguishedfromthenonaromaticsand
D4307Practice for Preparation of Liquid Blends for Use as
the concentrations are determined as a composite (see 6.1).
Analytical Standards
1.3 Monocyclicaromatichydrocarbonimpuritiescontaining
D4790Terminology ofAromatic Hydrocarbons and Related
6 through 10 carbon atoms (benzene through C aromatics)
10 Chemicals
canbedetectedbythistestmethodatindividualconcentrations
D5136Specification for High Purity p-Xylene
ranging from 0.001 to 1.000 weight %.
D5211Specification for Xylenes for p-Xylene Feedstock
D6526Test Method for Analysis of Toluene by Capillary
1.4 In determining the conformance of the test results to
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Column Gas Chromatography (Withdrawn 2018)
applicable specifications, results shall be rounded off in accor-
D6563Test Method for Benzene, Toluene, Xylene (BTX)
dance with the rounding-off method of Practice E29.
Concentrates Analysis by Gas Chromatography (With-
1.5 The values stated in SI units are to be regarded as
3
drawn 2018)
standard. No other units of measurement are included in this
D6809Guide for Quality Control and Quality Assurance
standard.
Procedures for Aromatic Hydrocarbons and Related Ma-
1.6 This standard does not purport to address all of the
terials
safety concerns, if any, associated with its use. It is the
E29Practice for Using Significant Digits in Test Data to
responsibility of the user of this standard to establish appro-
Determine Conformance with Specifications
priate safety, health, and environmental practices and deter-
E260Practice for Packed Column Gas Chromatography
mine the applicability of regulatory limitations prior to use.
E355PracticeforGasChromatographyTermsand Relation-
For specific hazard statement, see Section 9.
ships
1.7 This international standard was developed in accor-
E691Practice for Conducting an Interlaboratory Study to
dance with internationally recognized principles on standard-
Determine the Precision of a Test Method
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This test method is under the jurisdiction of ASTM Committee D16 on
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Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Their Derivatives. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved June 1, 2019. Published June 2019. Originally the ASTM website.
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approved in 1996. Last previous edition approved in 2015 as D5917–15 . DOI: The last approved version of this historical standard is referenced on
10.1520/D5917-15R19. www.astm.org.
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