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ASTM D5211-00

(Specification)

Standard Specification for Xylenes for p-Xylene Feedstock

Standard Specification for Xylenes for <i>p</i>-Xylene Feedstock

SCOPE
1.1 This specification covers xylenes for  p-xylene feedstock. These xylenes typically are extracted from reformate.
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or 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 E29.
1.3 Consult current OSHA regulations, suppliers' Material Safety Data Sheets (MSDS), and local regulations for all materials used in this specification.

General Information

Status
Historical
Publication Date
09-Jun-2001
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 D5211-01 - Standard Specification for Xylenes for <i>p</i>-Xylene Feedstock
Effective Date
10-Jun-2001
Referred By
ASTM D7504-23 - Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number
Effective Date
10-Jun-2001
Referred By
ASTM D5917-15(2019) - Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and External Calibration
Effective Date
10-Jun-2001

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ASTM D5211-00 - Standard Specification for Xylenes for <i>p</i>-Xylene FeedstockASTM D5211-00 - Standard Specification for Xylenes for <i>p</i>-Xylene Feedstock
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ASTM D5211-00 - Standard Specification for Xylenes for <i>p</i>-Xylene Feedstock
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5211 – 00
Standard Specification for
Xylenes for p-Xylene Feedstock
This standard is issued under the fixed designation D 5211; 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 * D 5808 Test Method for Determining Organic Chloride in
Aromatic Hydrocarbons and Related Chemicals by Micro-
1.1 This specification covers xylenes for p-xylene feed-
coulometry
stock. These xylenes typically are extracted from reformate.
E 29 Practice for Using Significant Digits in Test Data to
1.2 The following applies to all specified limits in this
Determine Conformance with Specifications
specification: for purposes of determining conformance with
2.2 Other Document:
this specification, an observed value or calculated value shall
OSHA Regulations, 29 CFR, paragraphs 1910.1000 and
be rounded off “to the nearest unit” in the last right hand digit
1910.1200
used in expressing the specification limit, in accordance with
the rounding-off method of Practice E 29.
3. Properties
1.3 Consult current OSHA regulations, suppliers’ Material
3.1 Xylenes for p-xylene feedstock shall conform to the
Safety Data Sheets (MSDS), and local regulations for all
following requirements:
materials used in this specification.
ASTM
Test
2. Referenced Documents
Property Specification Method
A
2.1 ASTM Standards:
p-xylene, min, weight % 18 D 2306
A
Ethylbenzene, max, weight % 20 D 2306
D 850 Test Method for Distillation of Industrial Aromatic
Toluene, max, weight % 0.5 D 2360
Hydrocarbons and Related Materials
C9 and higher boiling aromatic hydro- 1.0 D 2360
D 1209 Test Method for Color of Clear Liquids (Platinum- carbons, max, weight %
Nonaromatic hydrocarbons, max, 0.3 D 2360
Cobalt Scale)
weight %
D 2306 Test Method for C Aromatic Hydrocarbon Analy-
Nitrogen, max, mg/kg 1.0 D 4629
sis by Gas Chromatography Sulfur, max, mg/kg 1.0 D 4045
B
Appearance .
D 2360 Test Method for Trace Impurities in Monocyclic
Chloride if needed D 5194 or
Aromatic Hydrocarbons by Gas Chromatography
D 5808
D 3437 Practice for Sampling and Handling Liquid Cyclic Color, max, Pt/Co scale 20 D 1209 or
D 5386
Products
Distillation range, at 101.3 kPa (760 5 D 850
D 4045 Test Method for Sulfur in Petroleum Products by
mm Hg) pressure, max, °C
Hydrogenolysis and Rateometric Colorimetry Initial distillation temperature, min, 137 .
°C
D 4629 Test Method for Trace Nitrogen in Liquid Petro-
Dry point, max, °C 143 .
leum Hydrocarbons by Syringe/Inlet Oxidative Combus-
_____________
A
tion and Chemiluminescence Detection
The p-xylene and ethylbenzene specifications represent the distributi
...

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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.  
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