ASTM D6563-12

Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography (Withdrawn 2018)

SIGNIFICANCE AND USE
5.1 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.  
5.2 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.
WITHDRAWN RATIONALE
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.
Formerly under the jurisdiction of Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals, this test method was withdrawn in January 2018 and replaced by Test Method D7504 for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number.1

General Information

• Status: Withdrawn
• Publication Date: 31-May-2012
• ICS: 71.040.50 - Physicochemical methods of analysis
• ICS: 71.080.15 - Aromatic hydrocarbons
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.01 - Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives

Standards Content (Sample)

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 − 12
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* D6809 Guide for Quality Control and Quality Assurance
Procedures for Aromatic Hydrocarbons and Related Ma-
1.1 This test method covers the determination of the total
terials
nonaromatic hydrocarbons, benzene, toluene, ethylbenzene,
E29 Practice for Using Significant Digits in Test Data to
xylenes, and total C + aromatic hydrocarbons in BTX con-
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Determine Conformance with Specifications
centrates by capillary column gas chromatography. This test
E355 Practice for Gas ChromatographyTerms and Relation-
method is applicable to materials with a final boiling point
ships
below 215°C.
E691 Practice for Conducting an Interlaboratory Study to
1.2 This test method may also be used to determine the
Determine the Precision of a Test Method
relative distribution of the individual C aromatic hydrocarbon
8
E1510 Practice for Installing Fused Silica Open Tubular
isomers in mixed xylenes.
Capillary Columns in Gas Chromatographs
1.3 Individual components can be determined from 0.01 to 2.2 Other Documents:
90 %.
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
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—depentanizedby-productrecov-
safety concerns, if any, associated with its use. It is the
ered from ethylene manufacture.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.1.4 synthetic blend, n—blendofreagenthydrocarbonsthat
bility of regulatory limitations prior to use. For a specific simulate a process product.
precautionary statement, see Section 9.
3.1.5 hydrogenated pyrolysis gasoline, n—pyrolysis gaso-
line that has been treated with hydrogen to reduce the olefins
2. Referenced Documents
content.
2
2.1 ASTM Standards:
3.1.6 crude ethylbenzene, n—product produced from the
D3437 Practice for Sampling and Handling Liquid Cyclic
reaction of impure fluid cat cracking, (FCC) ethylene and
Products
benzene.
3.1.6.1 Discussion—It typically contains greater than 40 %
of ethylbenzene and benzene.
1
This test method is under the jurisdiction of ASTM Committee D16 on
3.1.7 light blending aromatics feedstock, n—light aromatics
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their
fraction (with high amounts of benzene and toluene) typically
Derivatives.
recovered from the isomerization of a p-xylene or m-xylene
CurrenteditionapprovedJune1,2012.PublishedJuly2012.Originallyapproved
depleted C aromatics stream.
in 2000. Last previous edition approved in 2011 as D6463 – 11a. DOI: 10.1520/ 8
D6563-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. 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
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D6563 − 12
TABLE 1 Recommended Operating Conditions
3.1.8 mixed xylenes, n—a mixture of C aromatic hydrocar-
8
bon isomers including ethylbenzene, but excluding stryene. Column
Tubing fused silica capillary
Length, m 50 or 60
4. Summary of Test Method
Internal diameter, mm 0.25
Stationary phase bonded polyethylene glycol
4.1 The specimen to be analyzed is injected into a gas
Film thickness, µm 0.25
chromatographequippedwithaflameionizationdetector(FID) Ca
...