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ASTM D3760-02e1

(Test Method)

Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography

Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography

SCOPE
1.1 This test method covers the determination of the purity of isopropylbenzene (cumene) by gas chromatography.
1.2 This test method has been found applicable to the measurement of impurities such as nonaromatic hydrocarbons, benzene, ethylbenzene, t-butylbenzene, n-propylbenzene, alpha-methylstyrene, sec-butylbenzene, and diisopropylbenzene, which are common to the manufacturing process of isopropylbenzene. Limit of detection for these impurities is 10 mg/kg (see 5.1).
1.3 The following applies to all specified limits in this standard: for purposes of determining conformance with this standard, 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.
1.4 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7.

General Information

Status
Historical
Publication Date
09-Jan-2002
ICS
71.080.10 - Aliphatic hydrocarbons
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.07 - Styrene, Ethylbenzene and C9 and C10 Aromatic Hydrocarbons
Current Stage
Ref Project

Relations

Replaces
ASTM D3760-02 - Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography
Effective Date
10-Jan-2002
Replaced By
ASTM D3760-08 - Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography
Effective Date
01-Jan-2008

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ASTM D3760-02e1 - Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas ChromatographyASTM D3760-02e1 - Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography
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ASTM D3760-02e1 - Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography
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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
e1
Designation:D3760–02
Standard Test Method for
Analysis of Isopropylbenzene (Cumene) by Gas
1
Chromatography
This standard is issued under the fixed designation D 3760; 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
e NOTE—Research report was added editorially in September 2004.
1. Scope E 355 Practice for Gas Chromatography Terms and Rela-
tionships
1.1 This test method covers the determination of the purity
2.2 Other Document:
of isopropylbenzene (cumene) by gas chromatography.
OSHA Regulations, 29CFR, paragraphs 1910.1000 and
1.2 This test method has been found applicable to the
3
1910.1200
measurement of impurities such as nonaromatic hydrocarbons,
benzene, ethylbenzene, t-butylbenzene, n-propylbenzene,
3. Summary of Test Method
alpha-methylstyrene, sec-butylbenzene, and diisopropylben-
3.1 A known amount of internal standard is added to a
zene, which are common to the manufacturing process of
sample of isopropylbenzene. The prepared sample is mixed
isopropylbenzene. Limit of detection for these impurities is 10
and analyzed by a gas chromatograph equipped with a flame
mg/kg (see 5.1).
ionization detector (FID). The peak area of each impurity and
1.3 The following applies to all specified limits in this
the internal standard is measured and the amount of each
standard: for purposes of determining conformance with this
impurity is calculated from the ratio of the peak area of the
standard, an observed value or a calculated value shall be
internalstandardversusthepeakareaoftheimpurity.Purityby
rounded off “to the nearest unit” in the last right-hand digit
GC (the isopropylbenzene content) is calculated by subtracting
used in expressing the specification limit, in accordance with
the sum of the impurities found from 100.00. Results are
the rounding-off method of PracticeE29.
reported in weight percent.
1.4 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 This test method is suitable for setting specifications on
priate safety and health practices and determine the applica-
thematerialsreferencedin1.2andforuseasaninternalquality
bility of regulatory limitations prior to use. For specific hazard
control tool where isopropylbenzene is produced or is used in
statements, see Section 7.
a manufacturing process. It may also be used in development
2. Referenced Documents or research work involving isopropylbenzene.
2 4.2 This test method is useful in determining the purity of
2.1 ASTM Standards:
isopropylbenzene with normal impurities present including
D 3437 Practice for Sampling and Handling Liquid Cyclic
diisopropylbenzenes. If extremely high boiling or unusual
Products
impuritiesarepresentintheisopropylbenzene,thistestmethod
E29 Practice for Using Significant Digits in Test Data to
would not necessarily detect them and the purity calculation
Determine Conformance with Specifications
would be erroneous.
E 260 Practice for Packed Gas Chromatography
4.3 Cumene hydroperoxide, if present, will yield decompo-
sition products that will elute in the chromatogram thereby
1
giving incorrect results.
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
4.4 The nonaromatic hydrocarbons commonly present from
Subcommittee D16.07 on Styrene, Ethylbenzene, and C and C Aromatic Hydro-
9 10
theisopropylbenzenemanufacturingprocesswillinterferewith
carbons.
the determination of benzene when Column A in Table 1 is
Current edition approved Aug. 30, 2004. Published March 2002. Originally
used.
published as D 3760 – 79. Last previous edition D 3760 – 98.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
e1
D3760–02
TABLE 1 Instrumental Parameters
6.3 Compressed Air—Chromatographic grade.
Column A Column B 6.4 Hydrogen—High purity.
Detector Flame Ionization Flame Ionization
7. Hazards
Column:
Tubing fused silica fused silica
7.1 Consult current OSHAregulations and suppliers’ Mate-
Statio
...

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5.1 The results of this practice may be used to distinguish tar-based emulsion from an asphalt-based emulsion for specification compliance purposes.
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