ASTM D2384-23

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.  
1.4.1 The user is advised to obtain LPG safety training for the safe operation of this test method procedure and related activities.  
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: Published
• Publication Date: 28-Feb-2023
• 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)

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: D2384 − 23
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* D1266 Test Method for Sulfur in Petroleum Products (Lamp
Method)
1.1 These test methods cover the determination of the total
volatile organic chlorides in concentrations from 10 mg ⁄kg to
3. Summary of Test Methods
100 mg ⁄kg in butane-butene mixtures. The amperometric fin-
3.1 Combination Test Methods—Either the lamp or oxy-
ish is not directly applicable in the presence of other substances
hydrogen test method may be used for combustion.
that combine with silver ion or oxidize chloride ion in dilute
acid solution. Bromides, sulfides, ammonia, tobacco smoke,
NOTE 1—Lamp combustion is readily applicable to multiple testing.
Although an oxy-hydrogen burner does not lend itself to multiple testing,
and more than 25 μg of hydrogen peroxide in the test solution
it affords much more rapid analysis for a single sample than does the lamp
interfere in the spectrophotometric procedure.
combustion.
1.2 Dissolved sodium chloride is not quantitatively deter-
3.1.1 Lamp Combustion—The sample is burned in an atmo-
mined using these test methods.
sphere of carbon dioxide and oxygen or in purified air; the
1.3 The values stated in SI units are to be regarded as
halogen-containing combustion products are absorbed in dilute
standard. No other units of measurement are included in this
sodium carbonate solution.
standard.
3.1.2 Oxy-Hydrogen Combustion—The sample is burned in
an oxy-hydrogen atomizer burner, and the combustion products
1.4 This standard does not purport to address all of the
are absorbed in a dilute solution of sodium carbonate.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.2 Finishes—Either the amperometric titration or spectro-
priate safety, health, and environmental practices and deter-
photometric finish may be used for the chloride ion determi-
mine the applicability of regulatory limitations prior to use.
nation.
Specific warning statements are given in Sections 5, 8, 11, 14,
3.2.1 Amperometric Titration—The chloride ion in aqueous
19, and Annex A1.
solution is titrated amperometrically with standard silver ni-
1.4.1 The user is advised to obtain LPG safety training for
trate solution, using a saturated calomel electrode as reference
the safe operation of this test method procedure and related
electrode. The diffusion currents are plotted against the corre-
activities.
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
4. Significance and Use
2.1 ASTM Standards:
D329 Specification for Acetone
4.1 These test methods are used to determine trace amounts
of volatile chlorides in butane-butene mixtures. Such informa-
1
These test methods are under the jurisdiction of ASTM Committee D02 on
tion is valuable in cases where chloride is deleterious in the use
Petroleum Products, Liquid Fuels, and Lubricants and are the direct responsibility
of this product; also, chloride contributes to corrosion prob-
of Subcommittee D02.D0.04 on C4 and C5 Hydrocarbons.
lems in processing units in instances where further processing
Current edition approved March 1, 2023. Published June 2023. Originally
approved in 1965. Last previous edition approved in 2019 as D2384 – 19. DOI: of this material is involved.
10.1520/D2384-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5. Purity of Reagents
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1 Purity of Reagents—Reagent grade chemicals shall be
S
...

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 − 19 D2384 − 23
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*
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.
1.4 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.
1.4.1 The user is advised to obtain LPG safety training for the safe operation of this test method procedure and related activities.
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.
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 Dec. 1, 2019March 1, 2023. Published January 2020June 2023. Originally approved in 1965. Last previous edition approved in 20142019 as
D2384 – 83 (2014).D2384 – 19. DOI: 10.1520/D2384-19.10.1520/D2384-23.
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2384 − 23
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 plott
...