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ASTM D4735-09

(Test Method)

Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography

Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography

SIGNIFICANCE AND USE
This test method is suitable for setting specifications on benzene and for use as an internal quality control tool where benzene is either produced or used in a manufacturing process.
This test method was found applicable for determining thiophene in refined benzene conforming to the specifications described in Specification D2359 and may be applicable toward other grades of benzene if the user has taken the necessary precautions as described in the text.
This test method was developed as an alternative technique to Test Method D1685.
SCOPE
1.1 This test method covers the determination of thiophene in refined benzene in the range from 0.80 to 1.80 mg/kg for the Flame Photometric Detector (FPD), and from 0.14 to 2.61 mg/kg for the Pulsed Flame Photometric Detector (PFPD). For the PFPD, the minimum level of quantitation (LOQ) is 0.14 mg/kg and the minimum level of detection (LOD) is 0.04 mg/kg, as described in ASTM Research Report RR: D16-1038. The range of the test method may be extended by modifying the sample injection volume, split ratios, calibration range, or sample dilution with thiophene-free solvent.
1.2 This test method has been found applicable to benzene characteristic of the type described in Specifications D2359 and D4734 and may be applicable to other types or grades of benzene only after the user has demonstrated that the procedure can completely resolve thiophene from the other organic contaminants contained in the sample.
1.3 The following applies to all specified limits in this test method: for purposes of determining conformance to applicable specification using this test method, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit in accordance with the rounding-off method of Practice E29.
1.4 The values stated in SI units are to be regarded as 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 Section 7.

General Information

Status
Historical
Publication Date
30-Nov-2009
ICS
71.080.15 - Aromatic hydrocarbons
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.04 - Instrumental Analysis
Current Stage
Ref Project

Relations

Replaces
ASTM D4735-02 - Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
Effective Date
01-Dec-2009
Replaced By
ASTM D4735-09(2014) - Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
Effective Date
01-Feb-2014
Referred By
ASTM D7185-19 - Standard Specification for Low Toluene Low Dioxane (LTLD) Benzene
Effective Date
01-Dec-2009
Referred By
ASTM D7124-19 - Standard Specification for Benzene for Use with Zeolite Based Catalysts
Effective Date
01-Dec-2009
Referred By
ASTM D7011-15(2019) - Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography and Sulfur Selective Detection
Effective Date
01-Dec-2009
Referred By
ASTM D4734-20 - Standard Specification for Refined Benzene-545
Effective Date
01-Dec-2009
Referred By
ASTM D5871-19 - Standard Specification for Benzene for Cyclohexane Feedstock
Effective Date
01-Dec-2009
Referred By
ASTM D2359-19 - Standard Specification for Refined Benzene-535
Effective Date
01-Dec-2009

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REDLINE ASTM D4735-09 - Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas ChromatographyREDLINE ASTM D4735-09 - Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
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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:D4735 −09
StandardTest Method for
Determination of Trace Thiophene in Refined Benzene by
1
Gas Chromatography
This standard is issued under the fixed designation D4735; 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* 2. Referenced Documents
3
1.1 This test method covers the determination of thiophene
2.1 ASTM Standards:
in refined benzene in the range from 0.80 to 1.80 mg/kg for the
D1193 Specification for Reagent Water
Flame Photometric Detector (FPD), and from 0.14 to 2.61
D1685 Test Method for Traces of Thiophene in Benzene by
mg/kg for the Pulsed Flame Photometric Detector (PFPD). For
Spectrophotometry
the PFPD, the minimum level of quantitation (LOQ) is 0.14
D2359 Specification for Refined Benzene-535
mg/kg and the minimum level of detection (LOD) is 0.04
D3437 Practice for Sampling and Handling Liquid Cyclic
2
mg/kg,asdescribedinASTMResearchReportRR:D16-1038.
Products
The range of the test method may be extended by modifying
D4057 Practice for Manual Sampling of Petroleum and
the sample injection volume, split ratios, calibration range, or
Petroleum Products
sample dilution with thiophene-free solvent.
D4177 Practice for Automatic Sampling of Petroleum and
Petroleum Products
1.2 This test method has been found applicable to benzene
D4307 Practice for Preparation of Liquid Blends for Use as
characteristic of the type described in Specifications D2359
Analytical Standards
and D4734 and may be applicable to other types or grades of
D4734 Specification for Refined Benzene-545
benzeneonlyaftertheuserhasdemonstratedthattheprocedure
D6809 Guide for Quality Control and Quality Assurance
can completely resolve thiophene from the other organic
Procedures for Aromatic Hydrocarbons and Related Ma-
contaminants contained in the sample.
terials
1.3 The following applies to all specified limits in this test
E29 Practice for Using Significant Digits in Test Data to
method: for purposes of determining conformance to appli-
Determine Conformance with Specifications
cable specification using this test method, an observed value or
E177 Practice for Use of the Terms Precision and Bias in
a calculated value shall be rounded off “to the nearest unit” in
ASTM Test Methods
the last right-hand digit used in expressing the specification
E260 Practice for Packed Column Gas Chromatography
limit in accordance with the rounding-off method of Practice
E355 Practice for Gas ChromatographyTerms and Relation-
E29.
ships
E691 Practice for Conducting an Interlaboratory Study to
1.4 The values stated in SI units are to be regarded as
Determine the Precision of a Test Method
standard.
E840 PracticeforUsingFlamePhotometricDetectorsinGas
1.5 This standard does not purport to address all of the
Chromatography
safety concerns, if any, associated with its use. It is the
E1510 Practice for Installing Fused Silica Open Tubular
responsibility of the user of this standard to establish appro-
Capillary Columns in Gas Chromatographs
priate safety and health practices and determine the applica-
2.2 Other Document:
bility of regulatory limitations prior to use. For specific hazard
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
statements, see Section 7.
4
1910.1200
1
This test method is under the jurisdiction of ASTM Committee D16 on
3
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Subcommittee D16.04 on Instrumental Analysis. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Dec. 1, 2009. Published December 2009. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1987. Last previous edition approved in 2002 as D4735 – 02. DOI: the ASTM website.
4
10.1520/D4735-09. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
2
Supporting data have been filed at ASTM International Headquarters and may 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
be obtained by requesting Research Report RR:D16-1038. 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 ----------------------
D4735−09
TABLE 1 Thiophene in Benzene Instrumental Conditions
Column A B C D
1 1 1
Tubing 6 ft 3 ⁄8in.Ni 15ftby ⁄8 in. stainless steel 10 ft by ⁄8 in. stainless steel 30 meter, Fused Silica,
0.25 (or 0.32) mm ID
A
Phase TCEEP SP-1000 OV-351 Bonded P
...

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.
Designation:D4735–02 Designation: D4735 – 09
Standard Test Method for
Determination of Trace Thiophene in Refined Benzene by
1
Gas Chromatography
This standard is issued under the fixed designation D4735; 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
1.1This test method covers the determination of thiophene in refined benzene in the range from 0.5 mg/kg to 5.0 mg/kg. The
range of the test method may be extended by modifying the sample injection volume, split ratios, calibration range, or sample
dilution with thiophene-free solvent. *
1.1 This test method covers the determination of thiophene in refined benzene in the range from 0.80 to 1.80 mg/kg for the
Flame Photometric Detector (FPD), and from 0.14 to 2.61 mg/kg for the Pulsed Flame Photometric Detector (PFPD). For the
PFPD, the minimum level of quantitation (LOQ) is 0.14 mg/kg and the minimum level of detection (LOD) is 0.04 mg/kg, as
2
described in ASTM Research Report RR: D16-1038. The range of the test method may be extended by modifying the sample
injection volume, split ratios, calibration range, or sample dilution with thiophene-free solvent.
1.2 This test method has been found applicable to benzene characteristic of the type described in Specifications D2359 and
D4734 and may be applicable to other types or grades of benzene only after the user has demonstrated that the procedure can
completely resolve thiophene from the other organic contaminants contained in the sample.
1.3 The following applies to all specified limits in this test method: for purposes of determining conformance to applicable
specification using this test method, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last
right-hand digit used in expressing the specification limit in accordance with the rounding-off method of Practice E29.
1.4
1.4 The values stated in SI units are to be regarded as 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 Section 7.
2. Referenced Documents
3
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1685 Test Method for Traces of Thiophene in Benzene by Spectrophotometry
D2359 Specification for Refined Benzene-535
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
D4734 Specification for Refined Benzene-545
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
5
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications Practice for Using
Significant Digits in Test Data to Determine Conformance with Specifications
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E260 Practice for Packed Column Gas Chromatography
1
This test method is under the jurisdiction ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.04 on Instrumental Analysis.
Current edition approved July 10, 2002. Published September 2002. Originally published as D4735–87. Last previous edition D4735–96(2000). DOI: 10.1520/D4735-02.
Current edition approved Dec. 1, 2009. Published December 2009. Originally approved in 1987. Last previous edition approved in 2002 as D4735 – 02. DOI:
10.1520/D4735-09.
2
Annual Book of ASTM Standards, Vol 11.01.
2
Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR: D16-1038.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
, Vol 06.04.volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocke
...

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ASTM
ASTM D847-23(Test Method)
Standard Test Method for Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas, and Similar Industrial Aromatic Hydrocarbons

SIGNIFICANCE AND USE
5.1 This test method is suitable for setting specifications, for use as an internal quality control tool, and for use in development or research work on industrial aromatic hydrocarbons and related materials. This test method gives an indication of residual acidity and is a measure of the quality of the finished product. It is an indication of the tendency of the product to corrode equipment.
SCOPE
1.1 This test method is intended for the detection of acidity of benzene, toluene, xylenes, solvent naphthas, and similar industrial aromatic hydrocarbons.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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 statements see Section 9.  
1.4 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.

  • Standard
    3 pages
    English language
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  • Standard
    3 pages
    English language
    sale 15% off