ASTM D3760-18

Standard Test Method for Analysis of Isopropylbenzene (Cumene) by Gas Chromatography (Withdrawn 2022)

SIGNIFICANCE AND USE
4.1 This test method is suitable for setting specifications on the materials referenced in 1.2 and for use as an internal quality control tool where isopropylbenzene is produced or is used in a manufacturing process. It may also be used in development or research work involving isopropylbenzene.  
4.2 This test method is useful in determining the purity of isopropylbenzene with normal impurities present including diisopropylbenzenes. If extremely high boiling or unusual impurities are present in the isopropylbenzene, this test method would not necessarily detect them and the purity calculation would be erroneous.  
4.3 Cumene hydroperoxide, if present, will yield decomposition products that will elute in the chromatogram thereby giving incorrect results.  
4.4 The nonaromatic hydrocarbons commonly present from the isopropylbenzene manufacturing process will interfere with the determination of benzene when Column A in Table 1 is used.  
4.5 The internal standard must be sufficiently resolved from any impurity and the isopropylbenzene peak.
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. The limit of quantitation for these impurities averages 0.0030 wt.% based on the data in Table 2, while the limit of detection for these impurities averages 0.0010 wt.%. This method has been found applicable for concentrations of various components up to 0.0571 wt.%.  
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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. For specific hazard statements, see Section 7.  
1.6 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.
WITHDRAWN RATIONALE
This test method covers the determination of the purity of isopropylbenzene (cumene) by gas chromatography.
Formerly under the jurisdiction of Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals, this test method was withdrawn in September 2022 and replaced by Test Method D7504 on Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number.1

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2017
• ICS: 71.080.10 - Aliphatic hydrocarbons
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.04 - Instrumental Analysis

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: D3760 − 18
Standard Test Method for
Analysis of Isopropylbenzene (Cumene) by Gas
1
Chromatography
This standard is issued under the fixed designation D3760; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of the purity
D3437 Practice for Sampling and Handling Liquid Cyclic
of isopropylbenzene (cumene) by gas chromatography.
Products
1.2 This test method has been found applicable to the
D6809 Guide for Quality Control and Quality Assurance
measurement of impurities such as nonaromatic hydrocarbons,
Procedures for Aromatic Hydrocarbons and Related Ma-
benzene, ethylbenzene, t-butylbenzene, n-propylbenzene,
terials
alpha-methylstyrene, sec-butylbenzene, and
E29 Practice for Using Significant Digits in Test Data to
diisopropylbenzene, which are common to the manufacturing
Determine Conformance with Specifications
processofisopropylbenzene.Thelimitofquantitationforthese
E260 Practice for Packed Column Gas Chromatography
impurities averages 0.0030 wt.% based on the data in Table 2,
E355 Practice for Gas Chromatography Terms and Relation-
while the limit of detection for these impurities averages
ships
0.0010 wt.%. This method has been found applicable for
E691 Practice for Conducting an Interlaboratory Study to
concentrations of various components up to 0.0571 wt.%.
Determine the Precision of a Test Method
E1510 Practice for Installing Fused Silica Open Tubular
1.3 In determining the conformance of the test results using
Capillary Columns in Gas Chromatographs
this method to applicable specifications, results shall be
2.2 Other Document:
rounded off in accordance with the rounding-off method of
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
Practice E29.
3
1910.1200
1.4 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this 3. Summary of Test Method
standard.
3.1 A known amount of internal standard is added to a
sample of isopropylbenzene. The prepared sample is mixed
1.5 This standard does not purport to address all of the
and analyzed by a gas chromatograph equipped with a flame
safety concerns, if any, associated with its use. It is the
ionization detector (FID). The peak area of each impurity and
responsibility of the user of this standard to establish appro-
the internal standard is measured and the amount of each
priate safety, health, and environmental practices and deter-
impurity is calculated from the ratio of the peak area of the
mine the applicability of regulatory limitations prior to use.
internalstandardversusthepeakareaoftheimpurity.Purityby
For specific hazard statements, see Section 7.
GC (the isopropylbenzene content) is calculated by subtracting
1.6 This international standard was developed in accor-
the sum of the impurities found from 100.00. Results are
dance with internationally recognized principles on standard-
reported in weight percent.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4. Significance and Use
mendations issued by the World Trade Organization Technical
4.1 This test method is suitable for setting specifications on
Barriers to Trade (TBT) Committee.
thematerialsreferencedin1.2andforuseasaninternalquality
1 2
This test method is under the jurisdiction of ASTM Committee D16 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi- contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
bility of Subcommittee D16.07 on Styrene, Ethylbenzene and C9 and C10Aromatic Standards volume information, refer to the standard’s Document Summary page on
Hydrocarbons. the ASTM website.
3
Current edition approved Jan. 1, 2018. Published January 2018. Originally AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
approved in 1979. Last previous edition approved in 2013 as D3760 – 13. DOI: 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
10.1520/D3760-18. www.access.gpo.gov.
*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
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D3760 − 18
TABLE 1 Recommended Operating Conditions
ment. Recorders are not considered adequate for meeting the
Column A Column B precision requirements of this standard.
Detector Flame Ioni
...