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 The following applies to all specified limits in this test method: for purposes of determining conformance with 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 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.
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 .

General Information

Status
Historical
Publication Date
30-Nov-2004
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D5194-04 - Standard Test Method for Trace Chloride in Liquid Aromatic Hydrocarbons
English language
4 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5194–04
Standard Test Method for
1
Trace Chloride in Liquid Aromatic Hydrocarbons
This standard is issued under the fixed designation D 5194; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* D 3437 Practice for Sampling and Handling Liquid Cyclic
Products
1.1 This test method covers the determination of total
D 3505 Test Method for Density or Relative Density of
chloride (organic and inorganic) in liquid aromatic hydrocar-
Pure Liquid Chemicals
bons and cyclohexane.
D 4052 Test Method for Density and Relative Density of
1.2 The test method is applicable to samples with chloride
Liquids by Digital Density Meter
concentrations of 1 to 25 mg/kg.
E29 Practice for Using Significant Digits in Test Data to
1.3 Bromides and iodides, if present, will be calculated as
Determine Conformance with Specifications
chlorides.
2.2 Other Documents:
1.4 Materials, such as styrene, that are polymerized by
OSHA Regulations, 29 CFR, paragraphs 1910.1000 and
sodium biphenyl reagent cannot be analyzed by this test
3
1910.1200
method.
1.5 The following applies to all specified limits in this test
3. Summary of Test Method
method: for purposes of determining conformance with this
3.1 A known amount of hydrocarbon sample is transferred
test method, an observed value or a calculated value shall be
into a separatory funnel containing toluene. Sodium biphenyl
rounded off “to the nearest unit” in the last right-hand digit
reagent is added to convert organic halogens into inorganic
used in expressing the specification limit, in accordance with
halides. The excess reagent is decomposed with water and the
the rounding-off method of PracticeE29.
phases are separated. The aqueous phase is acidified, washed,
1.6 The values stated in SI units are to be regarded as
and concentrated. Acetone is added and the solution is titrated
standard. No other units of measurement are included in this
with silver nitrate solution.
standard.
1.7 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
4.1 Organic and inorganic chlorine compounds can have a
responsibility of the user of this standard to establish appro-
deleterious effect on equipment and reactions in processes
priate safety and health practices and determine the applica-
involving aromatic hydrocarbons.
bility of regulatory limitations prior to use. For a specific
4.2 Maximum chloride levels are often specified for process
hazard statement, see Section 7.
streams and for aromatic hydrocarbon products.
2. Referenced Documents
5. Apparatus
2.1 ASTM Standards:
5.1 Titrator, potentiometric, recording, + 2000 mV range, 1
D 891 Test Methods for Specific Gravity, Apparent, of
2 mV resolution with dispenser having a volume readout of 0.00
Liquid Industrial Chemicals
to 9.99 mL or 0.00 to 99.99 mL and 0.01 % resolution.
D 1193 Specification for Reagent Water
5.2 Electrode, glass, reference.
5.3 Electrode, silver, billet type.
1
This test method is under the jurisdiction of ASTM Committee D16 on
6. Reagents and Materials
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
Subcommittee D16.04 on Instrumental Analysis.
6.1 Purity of Reagents—Reagent grade chemicals shall be
Current edition approved Dec. 1, 2004. Published January 2005. Originally
used in all tests. Unless otherwise indicated, it is intended that
approved in 1991. Last previous edition approved in 2000 as D 5194 – 96 (2000).
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
3
Standards volume information, refer to the standard’s Document Summary page on AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
the ASTM website. 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
*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 ----------------------
D5194–04
all reagents conform to the specifications of the Committee on 8. Sampling
Analytical Reagents of theAmerican Chemical Society, where
8.1 Refer to Practice D 3437 for proper sampling and
4
such specifications are available. Other grades may be used,
handling of liquid hydrocarbons analyzed by this test method.
provided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
9. Electrode Preparation
the determi
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.