ASTM D5808-18
(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 organic chlorides in aromatic hydrocarbons, their derivatives, and related chemicals.
1.2 This test method is applicable to samples with chloride concentrations from 0.7 mg/kg limit of quantitation (LOQ) to 25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg based on PTP data.
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.
General Information
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Designation: D5808 − 18
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* 2. Referenced Documents
2
1.1 This test method covers the organic chlorides in aro- 2.1 ASTM Standards:
matic hydrocarbons, their derivatives, and related chemicals. D1193 Specification for Reagent Water
D1555M TestMethodforCalculationofVolumeandWeight
1.2 This test method is applicable to samples with chloride
of Industrial Aromatic Hydrocarbons and Cyclohexane
concentrations from 0.7 mg/kg limit of quantitation (LOQ) to
[Metric]
25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg based on
D3437 Practice for Sampling and Handling Liquid Cyclic
PTP data.
Products
1.3 This test method is preferred over Test Method D5194
D5194 Test Method for Trace Chloride in Liquid Aromatic
for products, such as styrene, that are polymerized by the
Hydrocarbons
sodium biphenyl reagent.
D6809 Guide for Quality Control and Quality Assurance
Procedures for Aromatic Hydrocarbons and Related Ma-
1.4 In determining the conformance of the test results using
this method to applicable specifications, results shall be terials
E29 Practice for Using Significant Digits in Test Data to
rounded off in accordance with the rounding-off method of
Practice E29. Determine Conformance with Specifications
E691 Practice for Conducting an Interlaboratory Study to
1.5 Organicchloridevaluesofsamplescontaininginorganic
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, 29 CFR 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.
3. Terminology
1.6 The values stated in SI units are to be regarded as
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-
tion to remove water vapor.
safety concerns, if any, associated with its use. It is the
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, health, and environmental practices and deter-
combusted in an oxygen-rich atmosphere at high temperature
mine the applicability of regulatory limitations prior to use.
to break down the components of the sample into elemental
For specific hazard statements, see 7.3 and Section 9.
oxides.
1.8 This international standard was developed in accor-
3.1.3 recovery factor, n—an indication of the efficiency of
dance with internationally recognized principles on standard-
the measurement computed by dividing the measured value of
ization established in the Decision on Principles for the
a standard by its theoretical value.
Development of International Standards, Guides and Recom-
3.1.4 reference sensor pair, n—detects changes in silver ion
mendations issued by the World Trade Organization Technical
concentration.
Barriers to Trade (TBT) Committee.
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 June 1, 2018. Published August 2018. Originally AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
approved in 1995. Last previous edition approved in 2014 as D5808 – 09a (2014). 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
DOI: 10.1520/D5808-18. 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 − 18
3.1.5 test titration, n—a process that allows the coulometer inert carrier gas. The pyrolysis tube must be of ample volume,
to set the endpoint and gain values to be used for sample so that complete pyrolysis of the sample is
...
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 − 09a (Reapproved 2014) D5808 − 18
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 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 0.7 mg/kg limit of quantitation (LOQ) to 25
mg/kg. The limit of detection (LOD) is 0.2 mg/kg based on PTP data.
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 safety, health, and healthenvironmental 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.
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, 29CFR29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons Aromatic, Industrial, Specialty and Related Chemicals is the direct
responsibility of Subcommittee D16.04 on Instrumental Analysis.
Current edition approved Feb. 1, 2014June 1, 2018. Published February 2014August 2018. Originally approved in 1995. Last previous edition approved in 20092014 as
D5808 – 09a.D5808 – 09a (2014). DOI: 10.1520/D5808-09AR14.10.1520/D5808-18.
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’sstandard’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 ----------------------
D5808 − 18
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
...
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