ASTM D5713-14
(Test Method)Standard Test Method for Analysis of High Purity Benzene for Cyclohexane Feedstock by Capillary Gas Chromatography
Standard Test Method for Analysis of High Purity Benzene for Cyclohexane Feedstock by Capillary Gas Chromatography
SIGNIFICANCE AND USE
5.1 This test method is useful for benzene purity on the basis of impurities normally present in benzene and may be used for final product inspections and process control.
5.2 This test method will detect the following impurities: toluene, methylcyclopentane, n-hexane, 2-methylhexane, cyclohexane, cyclopentane, 2-methylpentane, 2,3-dimethylpentane, 3-methylhexane, n-heptane, methylcyclohexane, ethylcyclopentane, 2,4-dimethylhexane, trimethylpentane, and others where specific impurity standards are available. Absolute purity cannot be accurately determined if unknown impurities are present.
SCOPE
1.1 This test method covers the determination of specific impurities in, and the purity of benzene for cyclohexane feedstock by gas chromatography.
1.2 This test method has been found applicable to benzene in the range from 99 to 100 % purity and to impurities at concentrations of 2 to 10 000 mg/kg.
1.3 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.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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 statements, see 7.2 and Section 8.
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Designation: D5713 − 14
Standard Test Method for
Analysis of High Purity Benzene for Cyclohexane Feedstock
1
by Capillary Gas Chromatography
This standard is issued under the fixed designation D5713; 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* E29Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This test method covers the determination of specific
E260Practice for Packed Column Gas Chromatography
impurities in, and the purity of benzene for cyclohexane
E355PracticeforGasChromatographyTermsandRelation-
feedstock by gas chromatography.
ships
1.2 This test method has been found applicable to benzene
E1510Practice for Installing Fused Silica Open Tubular
in the range from 99 to 100% purity and to impurities at
Capillary Columns in Gas Chromatographs
concentrations of 2 to 10000 mg/kg.
2.2 Other Document:
1.3 In determining the conformance of the test results using
OSHA Regulations, 29 CFRparagraphs 1910.1000 and
3
this method to applicable specifications, results shall be
1910.1200
rounded off in accordance with the rounding-off method of
Practice E29.
3. Terminology
1.4 The values stated in SI units are to be regarded as
3.1 Definitions:
standard. No other units of measurement are included in this
3.1.1 SeeTerminologyD4790fordefinitionoftermsusedin
standard.
this test method.
1.5 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 Inthistestmethod,thechromatogrampeakareaforeach
priate safety and health practices and determine the applica-
impurity is compared to the peak area of the internal standard
bility of regulatory limitations prior to use. For specific hazard (n-octane or other suitable known) added to the sample. From
statements, see 7.2 and Section 8.
the response factor of toluene relative to that of the internal
standard, and using a response factor of 1.00 for nonaromatic
2. Referenced Documents
impurities and the amount of internal standard added, the
2
concentrations of the impurities are calculated. The benzene
2.1 ASTM Standards:
content is obtained by subtracting the total amount of all
D3437Practice for Sampling and Handling Liquid Cyclic
impurities from 100.00.
Products
D4790Terminology ofAromatic Hydrocarbons and Related
5. Significance and Use
Chemicals
D6809Guide for Quality Control and Quality Assurance
5.1 This test method is useful for benzene purity on the
Procedures for Aromatic Hydrocarbons and Related Ma- basis of impurities normally present in benzene and may be
terials
used for final product inspections and process control.
5.2 This test method will detect the following impurities:
toluene, methylcyclopentane, n-hexane, 2-methylhexane,
1
This test method is under the jurisdiction of ASTM Committee D16 on
cyclohexane, cyclopentane, 2-methylpentane, 2,3-
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
dimethylpentane, 3-methylhexane, n-heptane,
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their
methylcyclohexane, ethylcyclopentane, 2,4-dimethylhexane,
Derivatives.
Current edition approved Feb. 15, 2014. Published March 2014. Originally
trimethylpentane,andotherswherespecificimpuritystandards
approved in 1995. Last previous edition approved in 2009 as D5713–09. DOI:
10.1520/D5713-14.
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
---------------------- Page: 1 ----------------------
D5713 − 14
TABLE 2 Summary of Precision Data
are available.Absolute purity cannot be accurately determined
if unknown impurities are present. Average
Intermediate
Component Concentration Reproducibility
Precision
mg/kg
6. Apparatus
Benzene (weight %) 99.96 0.006 0.022
99.97 0.007 0.020
6.1 Gas Chromatograph—Any gas chromatograph having a
99.96 0.008 0.025
temperatureprogrammableoven,flameionizationdetectorand
a splitter injector suitable for use with a fused silica capillary Methylcyclopentane 104 8.3 27.
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: D5713 − 09 D5713 − 14
Standard Test Method for
Analysis of High Purity Benzene for Cyclohexane Feedstock
1
by Capillary Gas Chromatography
This standard is issued under the fixed designation D5713; 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*
1.1 This test method covers the determination of specific impurities in, and the purity of benzene for cyclohexane feedstock by
gas chromatography.
1.2 This test method has been found applicable to benzene in the range from 99 to 100 % purity and to impurities at
concentrations of 2 to 10 000 mg/kg.
1.3 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.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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 hazard statement,statements, see 7.17.2 and Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4790 Terminology of Aromatic Hydrocarbons and Related Chemicals
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
E260 Practice for Packed Column Gas Chromatography
E355 Practice for Gas Chromatography Terms and Relationships
E1510 Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
2.2 Other Document:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 See Terminology D4790 for definition of terms used in this test method.
4. Summary of Test Method
4.1 In this test method, the chromatogram peak area for each impurity is compared to the peak area of the internal standard
(n-octane or other suitable known) added to the sample. From the response factor of toluene relative to that of the internal standard,
and using a response factor of 1.00 for nonaromatic impurities and the amount of internal standard added, the concentrations of
the impurities are calculated. The benzene content is obtained by subtracting the total amount of all impurities from 100.00.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.
Current edition approved Dec. 1, 2009Feb. 15, 2014. Published January 2010March 2014. Originally approved in 1995. Last previous edition approved in 20052009 as
D5713 – 05.D5713 – 09. DOI: 10.1520/D5713-09.10.1520/D5713-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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 ----------------------
D5713 − 14
5. Significance and Use
5.1 This test method is useful for benzene purity on the basis of impurities normally present in benzene and may be used for
final product inspections and process control.
5.2 This test method will detect the following impurities: toluene, methylcyclopentane, n-hexane, 2-methylhexane,
cyclohexane, cyclopentane, 2-methylpentane, 2,3-dimethylpentane, 3-methylhexane, n-heptane, methylcyclohexane,
ethylcyclopentane, 2,4-dimethylhexane, trimethylpentane, and others where specific impurity standards are available. Absolute
purity cannot be accurately determined if unknown impurities are pres
...
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