Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography

SIGNIFICANCE AND USE
This test method was primarily developed to determine benzene, toluene, and xylenes in chemical intermediate and solvent streams such as reformate, BTX extracts, pyrolysis gasoline, hydrogenated pyrolysis gasoline, crude benzene, crude ethylbenzene, commercial toluene, and light blending aromatic feedstocks. This test method may not detect all components and there may be unknown components that would be assigned inappropriate response factors and thus, the results may not be absolute.
The relative distribution of C8 aromatics is useful for determining conformance to p-xylene feedstock specifications.
SCOPE
1.1 This test method covers the determination of the total nonaromatic hydrocarbons, benzene, toluene, ethylbenzene, xylenes, and total C9  + aromatic hydrocarbons in BTX concentrates by capillary column gas chromatography. This test method is applicable to materials with a final boiling point below 215°C.
1.2 This test method may also be used to determine the relative distribution of the individual C8 aromatic hydrocarbon isomers in mixed xylenes.
1.3 Individual components can be determined from 0.01 to 90 %.
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 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 and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see Section 9.

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Publication Date
31-Jan-2011
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6563–11
Standard Test Method for
Benzene, Toluene, Xylene (BTX) Concentrates Analysis by
1
Gas Chromatography
This standard is issued under the fixed designation D6563; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Procedures for Aromatic Hydrocarbons and Related Ma-
terials
1.1 This test method covers the determination of the total
E29 Practice for Using Significant Digits in Test Data to
nonaromatic hydrocarbons, benzene, toluene, ethylbenzene,
Determine Conformance with Specifications
xylenes, and total C + aromatic hydrocarbons in BTX con-
9
E355 Practice for Gas Chromatography Terms and Rela-
centrates by capillary column gas chromatography. This test
tionships
method is applicable to materials with a final boiling point
E691 Practice for Conducting an Interlaboratory Study to
below 215°C.
Determine the Precision of a Test Method
1.2 This test method may also be used to determine the
E1510 Practice for Installing Fused Silica Open Tubular
relative distribution of the individual C aromatic hydrocarbon
8
Capillary Columns in Gas Chromatographs
isomers in mixed xylenes.
2.2 Other Documents:
1.3 Individual components can be determined from 0.01 to
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
90 %.
3
1910.1200
1.4 In determining the conformance of the test results using
this method to applicable specifications, results shall be
3. Terminology
rounded off in accordance with the rounding-off method of
3.1 Definitions of Terms Specific to This Standard:
Practice E29.
3.1.1 extracted reformate, n—an aromatic concentrate ob-
1.5 The values stated in SI units are to be regarded as
tained by solvent extraction of reformate.
standard. No other units of measurement are included in this
3.1.2 reformate, n—the product of a catalytic process that
standard.
increases the concentration of aromatic hydrocarbons.
1.6 This standard does not purport to address all of the
3.1.3 pyrolysis gasoline, n—depentanized by-product re-
safety concerns, if any, associated with its use. It is the
covered from ethylene manufacture.
responsibility of the user of this standard to establish appro-
3.1.4 synthetic blend, n—blend of reagent hydrocarbons
priate safety and health practices and determine the applica-
that simulate a process product.
bility of regulatory limitations prior to use. For a specific
3.1.5 hydrogenated pyrolysis gasoline, n—pyrolysis gaso-
precautionary statement, see Section 9.
line that has been treated with hydrogen to reduce the olefins
2. Referenced Documents content.
2 3.1.6 crude ethylbenzene, n—product produced from the
2.1 ASTM Standards:
reaction of impure fluid cat cracking, (FCC) ethylene and
D3437 Practice for Sampling and Handling Liquid Cyclic
benzene.
Products
3.1.6.1 Discussion—It typically contains greater than 40 %
D6809 Guide for Quality Control and Quality Assurance
of ethylbenzene and benzene.
3.1.7 light blending aromatics feedstock, n—light aromatics
1
This test method is under the jurisdiction of ASTM Committee D16 on fraction (with high amounts of benzene and toluene) typically
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
recovered from the isomerization of a p-xylene or m-xylene
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their
depleted C aromatics stream.
8
Derivatives.
3.1.8 mixed xylenes, n—a mixture of C aromatic hydrocar-
Current edition approved Feb. 1, 2011. Published February 2011. Originally
8
´1
approved in 2000. Last previous edition approved in 2010 as D6463 – 05 (2010) .
bon isomers including ethylbenzene, but excluding stryene.
DOI: 10.1520/D6563-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
*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

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D6563–11
TABLE 1 Instrument Parameters
4. Summary of Test Method
Column 50 or 60 m by 0.25 mm ID bonded
4.1 The specimen to be analyzed is injected into a gas
polyethylene glycol-fused silica capillary,
chromatographequippedwithaflameionizationdetector(FID)
internally coated to a 0.25-µm thickness
Carrier gas h
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:D6563–05(Reapproved2010) Designation:D6563–11
Standard Test Method for
Benzene, Toluene, Xylene (BTX) Concentrates Analysis by
1
Gas Chromatography
This standard is issued under the fixed designation D6563; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—Section 16 was corrected editorially in July 2010.
1. Scope*
1.1 This test method covers the determination of the total nonaromatic hydrocarbons, benzene, toluene, ethylbenzene, xylenes,
andtotalC +aromatichydrocarbonsinBTXconcentratesbycapillarycolumngaschromatography.Thistestmethodisapplicable
9
to materials with a final boiling point below 215°C.
1.2This1.2 This test method may also be used to determine the relative distribution of the individual C aromatic hydrocarbon
8
isomers in mixed xylenes.
1.3 Individual components can be determined from 0.01 to 90 %.
1.4In1.4 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 E29.
1.5The1.5 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 and health practices and determine the applicability of regulatory
limitations prior to use. For a specific precautionary statement, see Section 9.
2. Referenced Documents
2
2.1 ASTM Standards:
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E355 Practice for Gas Chromatography Terms and Relationships
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1510 Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
2.2 Other Documents:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 extracted reformate, n—An—an aromatic concentrate obtained by solvent extraction of reformate.
3.1.2 reformate, n—The—the product of a catalytic process that increases the concentration of aromatic hydrocarbons.
3.1.3 pyrolysis gasoline, n—Ddepentanized by-product recovered from ethylene manufacture.
3.1.4 synthetic blend, n—Blend—blend of reagent hydrocarbons that simulate a process product.
3.1.5 hydrogenated pyrolysis gasoline, n—Ppyrolysisgasolinethathasbeentreatedwithhydrogentoreducetheolefinscontent.
1
This test method is under the jurisdiction ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.
Current edition approved June 15, 2010. Published July 2010. Originally approved in 2000. Last previous edition approved in 2005 as D6463–05. DOI:
10.1520/D6563-05R10E01.
´1
Current edition approved Feb. 1, 2011. Published February 2011. Originally approved in 2000. Last previous edition approved in 2010 as D6463 – 05 (2010) . DOI:
10.1520/D6563-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
*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 ----------------------
D6563–11
3.1.6 crude ethylbenzene, n—Product—product produced from the reaction of impure fluid cat cracking, (FCC) ethylene and
benzene.
3.1.6.1 Discussion—It typically contains greater than 40 % of ethylbenzene and benzene.
3.1.7 light blending aromatics feedstock, n—Light—light aromatics fraction (with high
...

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