ASTM D5808-09
(Test Method)Standard Test Method for Determining Chloride in Aromatic Hydrocarbons and Related Chemicals by Microcoulometry
Standard Test Method for Determining Chloride in Aromatic Hydrocarbons and Related Chemicals by Microcoulometry
SIGNIFICANCE AND USE
Organic as well as inorganic chlorine compounds can prove harmful to equipment and reactions in processes involving hydrocarbons.
Maximum chloride levels are often specified for process streams and for hydrocarbon products.
Organic chloride species are potentially damaging to refinery processes. Hydrochloric acid can be produced in hydrotreating or reforming reactors and this acid accumulates in condensing regions of the refinery.
SCOPE
1.1 This test method covers the organic chlorides in aromatic hydrocarbons, their derivatives, and related chemicals.
1.2 This test method is applicable to samples with chloride concentrations from 1 to 25 mg/kg.
1.3 This test method is preferred over Test Method D 5194 for products, such as styrene, that are polymerized by the sodium biphenyl reagent.
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 E 29.
1.5 Organic chloride values of samples containing inorganic chlorides will be biased high due to partial recovery of inorganic species during combustion. Interference from inorganic species can be reduced by water washing the sample before analysis. This does not apply to water soluble samples.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 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 7.3 and Section 9.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5808–09
Standard Test Method for
Determining Chloride in Aromatic Hydrocarbons and
1
Related Chemicals by Microcoulometry
This standard is issued under the fixed designation D5808; 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 D1555M Test Method for Calculation of Volume and
Weight of Industrial Aromatic Hydrocarbons and Cyclo-
1.1 This test method covers the organic chlorides in aro-
hexane [Metric]
matic hydrocarbons, their derivatives, and related chemicals.
D3437 Practice for Sampling and Handling Liquid Cyclic
1.2 This test method is applicable to samples with chloride
Products
concentrations from 1 to 25 mg/kg.
D5194 Test Method for Trace Chloride in Liquid Aromatic
1.3 This test method is preferred over Test Method D5194
Hydrocarbons
for products, such as styrene, that are polymerized by the
D6809 Guide for Quality Control and Quality Assurance
sodium biphenyl reagent.
Procedures for Aromatic Hydrocarbons and Related Ma-
1.4 In determining the conformance of the test results using
terials
this method to applicable specifications, results shall be
E29 Practice for Using Significant Digits in Test Data to
rounded off in accordance with the rounding-off method of
Determine Conformance with Specifications
Practice E29.
E691 Practice for Conducting an Interlaboratory Study to
1.5 Organic chloride values of samples containing inorganic
Determine the Precision of a Test Method
chlorides will be biased high due to partial recovery of
2.2 Other Document:
inorganic species during combustion. Interference from inor-
OSHA Regulations, 29CFR paragraphs 1910.1000 and
ganic species can be reduced by water washing the sample
3
1910.1200
before analysis. This does not apply to water soluble samples.
1.6 The values stated in SI units are to be regarded as
3. Terminology
standard. No other units of measurement are included in this
3.1 Definitions:
standard.
3.1.1 dehydration tube, n—chamber containing concen-
1.7 This standard does not purport to address all of the
trated sulfuric acid that scrubs the effluent gases from combus-
safety concerns, if any, associated with its use. It is the
tion to remove water vapor.
responsibility of the user of this standard to establish appro-
3.1.2 oxidative pyrolysis, n—a process in which a sample is
priate safety and health practices and determine the applica-
combusted in an oxygen-rich atmosphere at high temperature
bility of regulatory limitations prior to use. For specific hazard
to break down the components of the sample into elemental
statements, see 7.3 and Section 9.
oxides.
2. Referenced Documents 3.1.3 recovery factor, n—an indication of the efficiency of
2
the measurement computed by dividing the measured value of
2.1 ASTM Standards:
a standard by its theoretical value.
D1193 Specification for Reagent Water
3.1.4 reference sensor pair, n—detects changes in silver ion
concentration.
3.1.5 test titration, n—a process that allows the coulometer
1
This test method is under the jurisdiction of ASTM Committee D16 on
to set the endpoint and gain values to be used for sample
Aromatic Hydrocarbons and Related Chemicals is the direct responsibility of
analysis.
Subcommittee D16.04 on Instrumental Analysis.
3.1.6 titration parameters—various instrumental conditions
Current edition approved July 1, 2009. Published July 2009. Originally approved
in 1995. Last previous edition approved in 2003 as D5808 - 03. DOI: 10.1520/
that can be changed for different types of analysis.
D5808-09.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5808–09
3.1.7 working electrode (generator electrode), n—an elec- 7.4 Microcoulometer, capable of measuring the potential of
trode consisting of an anode and a cathode separated by a salt the sensing-reference electrode pair, and comparing this poten-
bridge; maintains a constant silver ion concentration. tial with a bias potential, and amplifying the difference to the
working electrode pair to generate a current. The microcou-
4. Summary of Test Method
lometer output voltage signal should be proportional
...
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:D5808–03 Designation:D5808–09
Standard Test Method for
Determining Organic Chloride in Aromatic Hydrocarbons
1
and Related Chemicals by Microcoulometry
This standard is issued under the fixed designation D 5808; 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 organic chlorides in aromatic hydrocarbons, their derivatives, and related chemicals.
1.2 This test method is applicable to samples with chloride concentrations from 1 to 25 mg/kg.
1.3 This test method is preferred over Test Method D 5194for products, such as styrene, that are polymerized by the sodium
biphenyl reagent.
1.4The following applies to all specified limits in this standard: for purposes of determining conformance with this standard, 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 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 E 29.
1.5
1.5 Organic chloride values of samples containing inorganic chlorides will be biased high due to partial recovery of inorganic
species during combustion. Interference from inorganic species can be reduced by water washing the sample before analysis. This
does not apply to water soluble samples.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 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 7.3 and Section 9.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
D 1555M Test Method for Calculation of Volume and Weight of IndustrialAromatic Hydrocarbons and Cyclohexane [Metric]
D 3437 Practice for Sampling and Handling Liquid Cyclic Products
3
D 5194 Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons
Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons
D 6809 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
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Other Document:
3
OSHA Regulations—29CFR OSHA Regulations, 29CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 dehydration tubedehydration tube, n—chamber containing concentrated sulfuric acid that scrubs the effluent gases from
combustion to remove water vapor.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals is the direct responsibility of Subcommittee
D16.04 on Instrumental Analysis.
Current edition approved Aug. 10, 2003. Published August 2003. Originally approved in 1995. Last previous edition approved in 1995 as D5808-95.
Current edition approved July 1, 2009. Published July 2009. Originally approved in 1995. Last previous edition approved in 2003 as D 5808 - 03.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 11.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 06.04.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5808–09
3.1.2 oxidative pyrolysisoxidativepyrolysis, n—aprocessinwhichasampleiscombustedinanoxygen-richatmosphereathigh
temperature to break down the components of the sample into elemental oxides.
3.1.3 recovery factorrecovery factor, n—an
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.