ASTM D2384-19

Standard Test Methods for Traces of Volatile Chlorides in Butane-Butene Mixtures

SIGNIFICANCE AND USE
4.1 These test methods are used to determine trace amounts of volatile chlorides in butane-butene mixtures. Such information is valuable in cases where chloride is deleterious in the use of this product; also, chloride contributes to corrosion problems in processing units in instances where further processing of this material is involved.
SCOPE
1.1 These test methods cover the determination of the total volatile organic chlorides in concentrations from 10 mg/kg to 100 mg/kg in butane-butene mixtures. The amperometric finish is not directly applicable in the presence of other substances that combine with silver ion or oxidize chloride ion in dilute acid solution. Bromides, sulfides, ammonia, tobacco smoke, and more than 25 μg of hydrogen peroxide in the test solution interfere in the spectrophotometric procedure.  
1.2 Dissolved sodium chloride is not quantitatively determined using these test methods.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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. Specific warning statements are given in Sections 5, 8, 11, 14, 19, and Annex A1.  
1.5 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

• Status: Historical
• Publication Date: 30-Nov-2019
• ICS: 75.160.30 - Gaseous fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.D0.04 - C4 and C5 Hydrocarbons

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2384 − 19
Standard Test Methods for
1
Traces of Volatile Chlorides in Butane-Butene Mixtures
This standard is issued under the fixed designation D2384; 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* 3. Summary of Test Methods
1.1 These test methods cover the determination of the total 3.1 Combination Test Methods—Either the lamp or oxy-
volatile organic chlorides in concentrations from 10 mg ⁄kg to hydrogen test method may be used for combustion.
100 mg ⁄kg in butane-butene mixtures. The amperometric fin-
NOTE 1—Lamp combustion is readily applicable to multiple testing.
ish is not directly applicable in the presence of other substances
Although an oxy-hydrogen burner does not lend itself to multiple testing,
that combine with silver ion or oxidize chloride ion in dilute
it affords much more rapid analysis for a single sample than does the lamp
combustion.
acid solution. Bromides, sulfides, ammonia, tobacco smoke,
and more than 25 µg of hydrogen peroxide in the test solution
3.1.1 Lamp Combustion—The sample is burned in an atmo-
interfere in the spectrophotometric procedure.
sphere of carbon dioxide and oxygen or in purified air; the
halogen-containing combustion products are absorbed in dilute
1.2 Dissolved sodium chloride is not quantitatively deter-
sodium carbonate solution.
mined using these test methods.
3.1.2 Oxy-Hydrogen Combustion—The sample is burned in
1.3 The values stated in SI units are to be regarded as
an oxy-hydrogen atomizer burner, and the combustion products
standard. No other units of measurement are included in this
are absorbed in a dilute solution of sodium carbonate.
standard.
3.2 Finishes—Either the amperometric titration or spectro-
1.4 This standard does not purport to address all of the
photometric finish may be used for the chloride ion determi-
safety concerns, if any, associated with its use. It is the
nation.
responsibility of the user of this standard to establish appro-
3.2.1 Amperometric Titration—The chloride ion in aqueous
priate safety, health, and environmental practices and deter-
solution is titrated amperometrically with standard silver ni-
mine the applicability of regulatory limitations prior to use.
trate solution, using a saturated calomel electrode as reference
Specific warning statements are given in Sections 5, 8, 11, 14,
electrode. The diffusion currents are plotted against the corre-
19, and Annex A1.
sponding volumes of silver nitrate solution used; the end point
1.5 This international standard was developed in accor-
is taken as the intersection of the two straight-line portions of
dance with internationally recognized principles on standard-
the curve.
ization established in the Decision on Principles for the
3.2.2 Spectrophotometric Finish—Chloride ion in the ab-
Development of International Standards, Guides and Recom-
sorber solution is determined by reaction with mercuric thio-
mendations issued by the World Trade Organization Technical
cyanate to release thiocyanate, which forms a reddish orange
Barriers to Trade (TBT) Committee.
+++
complex with Fe . The intensity of the color is measured at
460 nm with a spectrophotometer or filter photometer.
2. Referenced Documents
2
2.1 ASTM Standards:
4. Significance and Use
D329 Specification for Acetone
4.1 These test methods are used to determine trace amounts
D1266 Test Method for Sulfur in Petroleum Products (Lamp
of volatile chlorides in butane-butene mixtures. Such informa-
Method)
tion is valuable in cases where chloride is deleterious in the use
of this product; also, chloride contributes to corrosion prob-
1
lems in processing units in instances where further processing
These test methods are under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and are the direct responsibility of this material is involved.
of Subcommittee D02.D0.04 on C4 and C5 Hydrocarbons.
Current edition approved Dec. 1, 2019. Published January 2020. Originally
5. Purity of Reagents
approved in 1965. Last previous edition approved in 2014 as D2384 – 83 (2014).
DOI: 10.1520/D2384-19.
5.1 Purity of Reagents—Reagent grade chemicals shall be
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
used in all tests. Unless otherwise indicated, it is intended that
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
all reagents shall conform to the specifications of the Commit-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tee on Analytical Reagents of the American Ch
...

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: D2384 − 83 (Reapproved 2014) D2384 − 19
Standard Test Methods for
1
Traces of Volatile Chlorides in Butane-Butene Mixtures
This standard is issued under the fixed designation D2384; 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 These test methods cover the determination of the total volatile organic chlorides in concentrations from 1010 mg ⁄kg to
100 ppm100 mg ⁄kg in butane-butene mixtures. The amperometric finish is not directly applicable in the presence of other
substances that combine with silver ion or oxidize chloride ion in dilute acid solution. Bromides, sulfides, ammonia, tobacco
smoke, and more than 25 μg of hydrogen peroxide in the test solution interfere in the spectrophotometric procedure.
1.2 Dissolved sodium chloride is not quantitatively determined using these test methods.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. Specific warning statements are given in Sections 5, 8, 11, 14, 19, and Annex
A1.
1.5 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:
D329 Specification for Acetone
D1266 Test Method for Sulfur in Petroleum Products (Lamp Method)
3. Summary of Test Methods
3.1 Combination Test Methods—Either the lamp or oxy-hydrogen test method may be used for combustion.
NOTE 1—Lamp combustion is readily applicable to multiple testing. Although an oxy-hydrogen burner does not lend itself to multiple testing, it affords
much more rapid analysis for a single sample than does the lamp combustion.
3.1.1 Lamp Combustion—The sample is burned in an atmosphere of carbon dioxide and oxygen or in purified air; the
halogen-containing combustion products are absorbed in dilute sodium carbonate solution.
3.1.2 Oxy-Hydrogen Combustion—The sample is burned in an oxy-hydrogen atomizer burner, and the combustion products are
absorbed in a dilute solution of sodium carbonate.
3.2 Finishes—Either the amperometric titration or spectrophotometric finish may be used for the chloride ion determination.
3.2.1 Amperometric Titration—The chloride ion in aqueous solution is titrated amperometrically with standard silver nitrate
solution, using a saturated calomel electrode as reference electrode. The diffusion currents are plotted against the corresponding
volumes of silver nitrate solution used; the end point is taken as the intersection of the two straight-line portions of the curve.
3.2.2 Spectrophotometric Finish—Chloride ion in the absorber solution is determined by reaction with mercuric thiocyanate to
+++
release thiocyanate, which forms a reddish orange complex with Fe . The intensity of the color is measured at 460 nm with a
spectrophotometer or filter photometer.
1
These test methods are under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and are the direct responsibility of
Subcommittee D02.D0.04 on C4 and C5 Hydrocarbons.
Current edition approved May 1, 2014Dec. 1, 2019. Published July 2014January 2020. Originally approved in 1965. Last previous edition approved in 20092014 as
D2384 – 83 (2014).(2009). DOI: 10.1520/D2384-83R14.10.1520/D2384-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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D2384 − 19
4. Significance and U
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