ASTM D6505-00(2022)

Standard Test Method for Assay of <emph type="bdit">normal</emph>-Propyl Bromide Content

SIGNIFICANCE AND USE
3.1 This test method provides an analysis in weight percent of the normal-propyl bromide concentration of virgin, formulated, or reclaimed normal-propyl bromide: compounds that co-elute with normal-propyl bromide or normal-heptane (internal standard) may interfere with this test method.
SCOPE
1.1 This test method provides a basis for the determination of the normal-propyl bromide (weight %) in the presence of stabilizers and impurities, in virgin or reclaimed normal-propyl bromide (nPB). The application range is from 50 wt % to 100 wt %.  
1.2 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: 30-Apr-2022
• ICS: 71.080.20 - Halogenated hydrocarbons
• Technical Committee: D26 - Halogenated Organic Solvents and Fire Extinguishing Agents
• Drafting Committee: D26.04 - Test Methods

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: D6505 − 00 (Reapproved 2022)
Standard Test Method for
Assay of normal-Propyl Bromide Content
This standard is issued under the fixed designation D6505; 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 4.5 Crimp Top Vials—Hewlett Packard 2 mL glass crimp
top vials withTFE-fluorocarbon-lined silicone septa or equiva-
1.1 This test method provides a basis for the determination
lent.
of the normal-propyl bromide (weight %) in the presence of
stabilizers and impurities, in virgin or reclaimednormal-propyl 4.6 Volumetric Pipet—25 mL.
bromide (nPB). The application range is from 50 wt % to 100
4.7 GlassVials—32 mLglassvials(25 mmby95mm),with
wt %.
TFE-fluorocarbon-lined screw caps.
1.2 This international standard was developed in accor-
4.8 Transfer Pipets—Borosilicate glass transfer pipets.
dance with internationally recognized principles on standard-
4.9 Precision Balance, accurate to 0.1 mg.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Required Chemicals
mendations issued by the World Trade Organization Technical
5.1 n-Propyl Bromide (1-Bromopropane), 99+ %, Aldrich
Barriers to Trade (TBT) Committee.
Chemical Company
2. Summary of Test Method
5.2 n-Heptane (internal standard), Reagent Grade, 99.5+ %,
J.T. Baker (or equivalent)
2.1 This analytical test method describes the determination
of the assay of n-propyl bromide by gas chromatography using
5.3 Methylene Chloride, 99+ %, Aldrich Chemical Com-
an internal standard.The results are reported in weight percent.
pany (or equivalent)
3. Significance and Use
6. Suggested Analysis Conditions
3.1 This test method provides an analysis in weight percent
6.1 Chromatographic Conditions:
of the normal-propyl bromide concentration of virgin,
Injector 150 °C
formulated, or reclaimed normal-propyl bromide: compounds
Detector temperature 250 °C
that co-elute with normal-propyl bromide or normal-heptane
(internal standard) may interfere with this test method.
FID detector range most sensitive setting
Temperature 30 °C for 10 min
4. Apparatus
program 30 °C to 250 °C at 15 °C ⁄min
4.1 Gas Chromatograph—Hewlett Packard 5890 Series II
hold at 250 °C for 10 min
equipped with a split/splitless injector, a flame ionization
Carrier gas He (or N ) at 1 mL/min
detector, and an autosampler, HP, or equivalent, if available.
split flow: 25 mL/min
column head pressure: 7.5 psi
4.2 Column—30 m by 0.25 mm, 1.0 µm film thickness
AllTech AT-5, or equivalent, capillary column.
Make-up gas He (or N ) at 30 mL/min
4.3 Syringe—5 µL or 10 µL GC autosampler syringe.
Injection volume 0.5 µL
4.4 Data Acquisition and Analysis Device—VAX MULTI-
7. Analytical Procedure
CHROM or equivalent chromatography data collection and
7.1 Internal Standard Calibration Mixture—Carefully
processing system, or integrator.
weigh about 0.25 g of n-heptane internal standard and about
0.5gof n-propyl bromide into a 32 mL glass vial. Record the
actualweightsforeach.Pipet25mLofmethylenechlorideinto
This test method is under the jurisdiction of ASTM Committee D26 on
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
this vial and cap immediately. Mix well and then transfer
responsibility of Subcommittee D26.04 on Test Methods.
approximately 1 mL of this standard solution into an autosam-
Current edition approved May 1, 2022. Published May 2022. Originally
pler vial. Cap the vial and analyze in accordance with the
approved in 2000. Last previous edition approved in 2017 as D6505–00 (2017).
DOI: 10.1520/D6505-00R22. conditions specified in the chromatographic conditions section.
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D6505 − 00 (2022)
Inject this standard at least three times and calibrate an internal
Wtl = amount of n-heptane (internal standard) in standard
standard method in the da
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