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ASTM D7124-05

(Specification)

Standard Specification for Benzene for use with Zeolite Based Catalysts

Standard Specification for Benzene for use with Zeolite Based Catalysts

SCOPE
1.1 This specification covers benzene for use with zeolite based catalysts.
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, 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.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 Consult current OSHA regulations, supplier's Material Safety Data Sheets, and local regulations for all materials used in this specification.

General Information

Status
Historical
Publication Date
28-Feb-2005
ICS
71.080.15 - Aromatic hydrocarbons
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.01 - Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives
Current Stage
Ref Project

Relations

Replaced By
ASTM D7124-06 - Standard Specification for Benzene for use with Zeolite Based Catalysts
Effective Date
01-Oct-2006

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ASTM D7124-05 - Standard Specification for Benzene for use with Zeolite Based CatalystsASTM D7124-05 - Standard Specification for Benzene for use with Zeolite Based Catalysts
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ASTM D7124-05 - Standard Specification for Benzene for use with Zeolite Based Catalysts
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D 7124 – 05
Standard Specification for
Benzene for use with Zeolite Based Catalysts
This standard is issued under the fixed designation D 7124; 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. Scope tion and Chemiluminescence Detection
D 4735 Test Method for Determination of Trace Thiophene
1.1 This specification covers benzene for use with zeolite
in Refined Benzene by Gas Chromatography
based catalysts.
D 5194 Test Method for Trace Chloride in LiquidAromatic
1.2 The following applies to all specified limits in this
Hydrocarbons
specification: for purposes of determining conformance with
D 5386 Test Method for Color of Liquids UsingTristimulus
this specification, an observed value or a calculated value shall
Colorimetry
be rounded off “to the nearest unit” in the last right-hand digit
D 5776 Test Methods for Bromine Index of Aromatic Hy-
used in expressing the specification limit, in accordance with
drocarbons by Electrometric Titration
the rounding-off method of PracticeE29.
D 6069 Test Method for Trace Nitrogen in Aromatic Hy-
1.3 The values stated in SI units are to be regarded as the
drocarbons by Oxidative Combustion and Reduced Pres-
standard. The values given in parentheses are for information
sure Chemiluminescence Detection
only.
D 6212 Test Method for Total Sulfur in Aromatic Com-
1.4 Consult current OSHA regulations, supplier’s Material
pounds by Hydrogenolysis and Rateometric Colorimetry
Safety Data Sheets, and local regulations for all materials used
D 6304 Test Method for Determination of Water in Petro-
in this specification.
leum Products, Lubricating Oils, and Additives by Coulo-
2. Referenced Documents
metric Karl Fisher Titration
D 6313 Test Method for Total Sulfur in Aromatic Com-
2.1 ASTM Standards:
pounds by Hydrogenolysis and Sulfur Specific Difference
D 848 Test Method for Acid Wash Color of Industrial
Photometry
Aromatic Hydrocarbons
D 6366 Test Method for Total Trace Nitrogen and Its
D 1209 Test Method for Color of Clear Liquids (Platinum-
Derivatives in Liquid Aromatic Hydrocarbons by Oxida-
Cobalt Scale)
tive Combustion and Electrochemical Detection
D 1492 Test Method for Bromine Index of Aromatic Hy-
D 6428 Test Method for Total Sulfur in Liquid Aromatic
drocarbons by Coulometric Titration
Hydrocarbons and Their Derivatives by Oxidative Com-
D 1685 Test Method forTraces ofThiophene in Benzene by
bustion and Electrochemical Detection
Spectrophotometry
D 7011 Test Method for Determination of Trace Thiophene
D 3437 Practice for Sampling and Handling Liquid Cyclic
in Refined Benzene by Gas Chromatography and Sulfur
Products
Selective Detection
D 4045 Test Method for Sulfur in Petroleum Products by
E29 Practice for Using Significant Digits in Test Data to
Hydrogenolysis and Rateometric Colorimetry
Determine Conformance with Specifications
D 4492 Test Method for Analysis of Benzene by Gas
E 1064 Test Method for Water in Organic Liquids by
Chromatography
Coulometric Karl Fischer Titration
D 4629 Test Method f
...

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1.1 This specification covers ethylbenzene.  
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ASTM D7057-23(Test Method)
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SIGNIFICANCE AND USE
5.1 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.  
5.2 This test method is useful in determining the purity of isopropylbenzene with normal impurities present. 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.  
5.3 Cumene hydroperoxide, if present, will yield thermal decomposition products, primarily AP and DMPC as stated in 4.1, that will elute in the chromatogram thereby giving incorrect results unless they are excluded as indicated in 4.1. It is also possible to get erroneous results for trace alpha-methylstyrene present in isopropylbenzene if the inlet has become unduly contaminated with non-volatile foreign substances.  
5.4 The nonaromatic hydrocarbons commonly present from the isopropylbenzene manufacturing process, particularly a non-zeolitic one, will interfere with the determination of xylenes (if present).
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1.1 This test method covers the determination of the purity of isopropylbenzene (cumene) by gas chromatography. Calibration of the gas chromatography system is done by the external standard calibration technique.  
1.2 This test method has been found applicable to the measurement of impurities such as nonaromatic hydrocarbons, benzene, toluene, ethylbenzene, phenol, cymenes, t-butylbenzene, n-butylbenzene, n-propylbenzene, alpha-methylstyrene, sec-butylbenzene, and diisopropylbenzenes, which are impurities that can be found in isopropylbenzene. The latter impurities can be analyzed over a range of 1 mg/kg to 500 mg/kg by this method (see Table 1). The limit of quantitation averages 3.8 mg/kg while the limit of detection for these impurities averages 1.1 mg/kg based on the data in Table 1.  
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 9.  
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