Standard Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons

SCOPE
1.1 This test method covers the determination of total chloride (organic and inorganic) in liquid aromatic hydrocarbons and cyclohexane.
1.2 The test method is applicable to samples with chloride concentrations of 1 to 25 mg/kg.
1.3 Bromides and iodides, if present, will be calculated as chlorides.
1.4 Materials, such as styrene, that are polymerized by sodium biphenyl reagent cannot be analyzed by this test method.
1.5 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.
1.6 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 a specific hazard statement, see Section .

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ASTM D5194-06 - Standard Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D5194–06
Standard Test Method for
1
Trace Chloride in Liquid Aromatic Hydrocarbons
This standard is issued under the fixed designation D5194; 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* D4052 Test Method for Density and Relative Density of
Liquids by Digital Density Meter
1.1 This test method covers the determination of total
D6809 Guide for Quality Control and Quality Assurance
chloride (organic and inorganic) in liquid aromatic hydrocar-
Procedures for Aromatic Hydrocarbons and Related Ma-
bons and cyclohexane.
terials
1.2 The test method is applicable to samples with chloride
E29 Practice for Using Significant Digits in Test Data to
concentrations of 1 to 25 mg/kg.
Determine Conformance with Specifications
1.3 Bromides and iodides, if present, will be calculated as
3
2.2 Other Documents:
chlorides.
OSHA Regulations 29 CFR paragraphs 1910.1000 and
1.4 Materials, such as styrene, that are polymerized by
1910.1200
sodium biphenyl reagent cannot be analyzed by this test
method.
3. Summary of Test Method
1.5 In determining the conformance of the test results using
3.1 A known amount of hydrocarbon sample is transferred
this method to applicable specifications, results shall be
into a separatory funnel containing toluene. Sodium biphenyl
rounded off in accordance with the rounding-off method of
reagent is added to convert organic halogens into inorganic
Practice E29.
halides. The excess reagent is decomposed with water and the
1.6 The values stated in SI units are to be regarded as
phases are separated. The aqueous phase is acidified, washed,
standard. No other units of measurement are included in this
and concentrated. Acetone is added and the solution is titrated
standard.
with silver nitrate solution.
1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 Organic and inorganic chlorine compounds can have a
priate safety and health practices and determine the applica-
deleterious effect on equipment and reactions in processes
bility of regulatory limitations prior to use. For a specific
involving aromatic hydrocarbons.
hazard statement, see Section 7.
4.2 Maximum chloride levels are often specified for process
2. Referenced Documents streams and for aromatic hydrocarbon products.
2
2.1 ASTM Standards:
5. Apparatus
D891 Test Methods for Specific Gravity, Apparent, of
5.1 Titrator, potentiometric, recording, + 2000 mV range, 1
Liquid Industrial Chemicals
mV resolution with dispenser having a volume readout of 0.00
D1193 Specification for Reagent Water
to 9.99 mL or 0.00 to 99.99 mL and 0.01 % resolution.
D3437 Practice for Sampling and Handling Liquid Cyclic
5.2 Electrode, glass, reference.
Products
5.3 Electrode, silver, billet type.
D3505 Test Method for Density or Relative Density of Pure
Liquid Chemicals
6. Reagents and Materials
6.1 Purity of Reagents—Reagent grade chemicals shall be
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This test method is under the jurisdiction of ASTM Committee D16 on
used in all tests. Unless otherwise indicated, it is intended that
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
all reagents conform to the specifications of the Committee on
Subcommittee D16.04 on Instrumental Analysis.
Analytical Reagents of theAmerican Chemical Society, where
Current edition approved March 1, 2006. Published March 2006. Originally
approved in 1991. Last previous edition approved in 2004 as D5194 – 04. DOI:
10.1520/D5194-06.
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.
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D5194–06
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such specifications are available. Other grades may be used, 9. Electrode Preparation
provided it is first ascertained that the reagent is of sufficiently
9.1 Clean the surface of the silver electrode with mild
high purity to permit its use without lessening the accuracy of
detergent and scouring powder, and rinse with water.
the determination.
9.2 Immerse the e
...

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