ASTM D5808-23
(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
5.1 Organic as well as inorganic chlorine compounds can prove harmful to equipment and reactions in processes involving hydrocarbons.
5.2 Maximum chloride levels are often specified for process streams and for hydrocarbon products.
5.3 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 determination of organic chloride in aromatic hydrocarbons, their derivatives, and related chemicals.
1.2 This test method is applicable to samples with chloride concentrations to 25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg and the limit of quantitation (LOQ) is 0.7 mg/kg. With careful analytical technique or the measurement of replicates, or both, this method can be used to successfully analyze concentrations below the LOD.
Note 1: The maximum is the highest concentration from the interlaboratory study and the LOD and LOQ were calculated from Performance Testing Program (PTP) data. See Table 1.
1.3 This test method is preferred over Test Method D5194 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 E29.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 7.3 and Section 9.
1.8 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.
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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.
Designation: D5808 − 23
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* 1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This test method covers the determination of organic
ization established in the Decision on Principles for the
chloride in aromatic hydrocarbons, their derivatives, and re-
Development of International Standards, Guides and Recom-
lated chemicals.
mendations issued by the World Trade Organization Technical
1.2 This test method is applicable to samples with chloride
Barriers to Trade (TBT) Committee.
concentrations to 25 mg/kg. The limit of detection (LOD) is 0.2
mg/kg and the limit of quantitation (LOQ) is 0.7 mg/kg. With
2. Referenced Documents
careful analytical technique or the measurement of replicates,
2
2.1 ASTM Standards:
or both, this method can be used to successfully analyze
D1193 Specification for Reagent Water
concentrations below the LOD.
D1555M Test Method for Calculation of Volume and Weight
NOTE 1—The maximum is the highest concentration from the interla- of Industrial Aromatic Hydrocarbons and Cyclohexane
boratory study and the LOD and LOQ were calculated from Performance
[Metric]
Testing Program (PTP) data. See Table 1.
D3437 Practice for Sampling and Handling Liquid Cyclic
1.3 This test method is preferred over Test Method D5194
Products
for products, such as styrene, that are polymerized by the
D5194 Test Method for Trace Chloride in Liquid Aromatic
sodium biphenyl reagent.
Hydrocarbons
D6809 Guide for Quality Control and Quality Assurance
1.4 In determining the conformance of the test results using
Procedures for Aromatic Hydrocarbons and Related Ma-
this method to applicable specifications, results shall be
terials
rounded off in accordance with the rounding-off method of
E29 Practice for Using Significant Digits in Test Data to
Practice E29.
Determine Conformance with Specifications
1.5 Organic chloride values of samples containing inorganic
2.2 Other Document:
chlorides will be biased high due to partial recovery of
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
inorganic species during combustion. Interference from inor-
3
1910.1200
ganic species can be reduced by water washing the sample
before analysis. This does not apply to water soluble samples.
3. Terminology
1.6 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 dehydration tube, n—chamber containing concen-
standard.
trated sulfuric acid that scrubs the effluent gases from combus-
1.7 This standard does not purport to address all of the tion to remove water vapor.
safety concerns, if any, associated with its use. It is the
3.1.2 oxidative pyrolysis, n—a process in which a sample is
responsibility of the user of this standard to establish appro-
combusted in an oxygen-rich atmosphere at high temperature
priate safety, health, and environmental practices and deter-
to break down the components of the sample into elemental
mine the applicability of regulatory limitations prior to use.
oxides.
For specific hazard statements, see 7.3 and Section 9.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee D16 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Aromatic, Industrial, Specialty and Related Chemicals is the direct responsibility of Standards volume information, refer to the standard’s Document Summary page on
Subcommittee D16.04 on Instrumental Analysis. the ASTM website.
3
Current edition approved Nov. 1, 2023. Published November 2023. Originally Available from U.S. Government Printing Office Superintendent of Documents,
approved in 1995. Last previous edition approved in 2020 as D5808 – 20. DOI: 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
10.1520/D5808-23. 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 ----------------------
D5808 − 23
3.1.3 recovery factor, n—an indication of the effi
...
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 − 20 D5808 − 23
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*
1.1 This test method covers the determination of organic chloride in aromatic hydrocarbons, their derivatives, and related
chemicals.
1.2 This test method is applicable to samples with chloride concentrations to 25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg
and the limit of quantitation (LOQ) is 0.7 mg/kg. With careful analytical technique or the measurement of replicates, or both, this
method can be used to successfully analyze concentrations below the LOD.
NOTE 1—The maximum is the highest concentration from the interlaboratory study and the LOD and LOQ were calculated from Performance Testing
Program (PTP) data. See Table 1.
1.3 This test method is preferred over Test Method D5194 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 E29.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. For specific hazard statements, see 7.3 and Section 9.
1.8 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.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals is the direct responsibility of Subcommittee
D16.04 on Instrumental Analysis.
Current edition approved Aug. 15, 2020Nov. 1, 2023. Published August 2020November 2023. Originally approved in 1995. Last previous edition approved in 20182020
as D5808 – 18.D5808 – 20. DOI: 10.1520/D5808-20.10.1520/D5808-23.
*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 ----------------------
D5808 − 23
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1555M Test Method for Calculation of Volume and Weight of Industrial Aromatic Hydrocarbons and Cyclohexane [Metric]
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D5194 Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons
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
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Other Document:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 dehydration tube, n—chamber containing concentrated sulfuric acid that scrubs the effluent gases from combustion to
remove water vapor.
3.1.2 oxidative pyrolysis, n—a process in which a sample is combusted in an oxygen-rich atmosphere at high temperature to break
down the components of the sample into elemental oxides.
3.1.3 recovery factor, n—an indication of the efficiency of the measurement computed by dividing the measured value of a
standard by its theoretical value.
3.1.4 reference sensor pair, n—detects chan
...
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