ASTM D7124-19
(Specification)Standard Specification for Benzene for Use with Zeolite Based Catalysts
Standard Specification for Benzene for Use with Zeolite Based Catalysts
ABSTRACT
This specification covers benzene for use with zeolite based catalysts. Tests shall be performed to determine the property requirements of benzene in accordance to the following test methods: benzene weight percentage; sulfur mass; thiophene mass; toluene mass; nonaromatic hydrocarbons weight percentage; nitrogen mass; acid wash color; bromine index, water, and appearance.
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 E29.
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 Safety Data Sheets, and local regulations for all materials used in this specification.
1.5 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
- 31-Oct-2019
- Technical Committee
- D16 - Aromatic, Industrial, Specialty and Related Chemicals
- Drafting Committee
- D16.01 - Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives
Relations
- Effective Date
- 01-Nov-2019
- Effective Date
- 01-Jan-2024
- Effective Date
- 01-Jan-2024
- Effective Date
- 01-Nov-2023
- Effective Date
- 01-Nov-2023
- Effective Date
- 15-Aug-2020
- Effective Date
- 01-Jun-2020
- Effective Date
- 01-Jun-2019
- Effective Date
- 01-Jun-2019
- Effective Date
- 01-Nov-2018
- Effective Date
- 01-Jun-2017
- Effective Date
- 01-Apr-2017
- Effective Date
- 01-Jul-2015
- Effective Date
- 01-Jul-2015
- Effective Date
- 01-Jun-2015
Overview
ASTM D7124-19: Standard Specification for Benzene for Use with Zeolite Based Catalysts defines the quality, purity, and testing requirements for benzene intended for use in processes employing zeolite-based catalysts. This ASTM standard ensures benzene meets stringent purity levels and physical property specifications to optimize catalyst performance and maintain reliability in chemical manufacturing processes. The document establishes clear guidelines for sample testing, documentation, and compliance, supporting safe and consistent operations across the chemical and petrochemical industries.
Key Topics
Purity Requirements:
Benzene must meet minimum purity standards (e.g., 99.8% by mass and weight) to guarantee compatibility and effectiveness with zeolite catalysts.Property Testing:
Multiple tests are required to confirm the specification, including determination of:- Sulfur content
- Thiophene levels
- Toluene content
- Nonaromatic hydrocarbon percentage
- Nitrogen content
- Chloride contaminants
- Water content
- Acid wash color
These requirements help prevent catalyst poisoning and unwanted process reactions.
Analytical Methods:
Testing methods referenced include advanced techniques such as:- Gas chromatography
- Coulometric titration
- Spectrophotometry
- Visual inspection for appearance and color evaluation
The standard provides flexibility by allowing for more than one method, with the preferred approach agreed upon between producer and user.
Sample Handling:
Detailed sampling protocols ensure representative samples using ASTM D3437.Units and Rounding:
All measurements are reported in SI units. Conformance is determined using standardized rounding rules as per ASTM E29.
Applications
Petrochemical Manufacturing:
Industries processing benzene in the production of ethylbenzene, cumene, and other petrochemical derivatives benefit from this specification to ensure feedstock consistency with zeolite catalysts.Refining Catalytic Processes:
This standard helps refiners maintain catalyst integrity by tightly controlling impurities known to deactivate zeolite-based catalysts.Quality Assurance:
Procurement, supply chain, and laboratory professionals utilize ASTM D7124-19 to define benzene acceptance criteria, ensuring raw materials meet industry-standard quality benchmarks.Regulatory Compliance:
Conformance with ASTM D7124-19 supports compliance with safety regulations (such as OSHA requirements) and international trade agreements, facilitating market access and safe operation.
Related Standards
For proper implementation and verification, ASTM D7124-19 references numerous related standards, including:
- ASTM D848: Acid Wash Color of Industrial Aromatic Hydrocarbons
- ASTM D1492, D5776: Bromine Index of Aromatic Hydrocarbons
- ASTM D3437: Sampling and Handling Liquid Cyclic Products
- ASTM D7360, D7504: Gas Chromatographic Analysis of Aromatics
- ASTM D7183, D7184, D7359: Sulfur and Nitrogen Content in Aromatic Hydrocarbons
- ASTM E29: Rounding Significant Digits in Test Data
- OSHA Regulations: Safety and handling guidelines for hazardous chemicals
For a complete list, consult ASTM D7124-19 and referenced ASTM methods.
By adhering to ASTM D7124-19, organizations ensure benzene purity and process reliability in zeolite-catalyzed applications, supporting optimal production outcomes and meeting evolving regulatory and quality control requirements.
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Frequently Asked Questions
ASTM D7124-19 is a technical specification published by ASTM International. Its full title is "Standard Specification for Benzene for Use with Zeolite Based Catalysts". This standard covers: ABSTRACT This specification covers benzene for use with zeolite based catalysts. Tests shall be performed to determine the property requirements of benzene in accordance to the following test methods: benzene weight percentage; sulfur mass; thiophene mass; toluene mass; nonaromatic hydrocarbons weight percentage; nitrogen mass; acid wash color; bromine index, water, and appearance. 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 E29. 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 Safety Data Sheets, and local regulations for all materials used in this specification. 1.5 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.
ABSTRACT This specification covers benzene for use with zeolite based catalysts. Tests shall be performed to determine the property requirements of benzene in accordance to the following test methods: benzene weight percentage; sulfur mass; thiophene mass; toluene mass; nonaromatic hydrocarbons weight percentage; nitrogen mass; acid wash color; bromine index, water, and appearance. 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 E29. 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 Safety Data Sheets, and local regulations for all materials used in this specification. 1.5 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.
ASTM D7124-19 is classified under the following ICS (International Classification for Standards) categories: 71.080.15 - Aromatic hydrocarbons. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D7124-19 has the following relationships with other standards: It is inter standard links to ASTM D7124-17, ASTM E1064-24, ASTM D5194-24, ASTM D5808-23, ASTM E2680-23, ASTM D7536-20, ASTM D7184-20, ASTM D7184-15(2019)e1, ASTM D7011-15(2019), ASTM D7183-18a, ASTM D7504-17a, ASTM D7504-17, ASTM D7504-15e1, ASTM D7504-15, ASTM D8005-15. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D7124-19 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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: D7124 −19
Standard Specification for
Benzene for Use with Zeolite Based Catalysts
This standard is issued under the fixed designation D7124; 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 D4735 Test Method for Determination of Trace Thiophene
in Refined Benzene by Gas Chromatography
1.1 This specification covers benzene for use with zeolite
D5194 Test Method for Trace Chloride in Liquid Aromatic
based catalysts.
Hydrocarbons
1.2 The following applies to all specified limits in this
D5386 Test Method for Color of Liquids Using Tristimulus
specification: for purposes of determining conformance with
Colorimetry
this specification, an observed value or a calculated value shall
D5776 Test Method for Bromine Index of Aromatic Hydro-
be rounded off “to the nearest unit” in the last right-hand digit
carbons by Electrometric Titration
used in expressing the specification limit, in accordance with
D5808 Test Method for Determining Chloride in Aromatic
the rounding-off method of Practice E29.
Hydrocarbons and Related Chemicals by Microcoulom-
1.3 The values stated in SI units are to be regarded as the
etry
standard. The values given in parentheses are for information
D7011 Test Method for Determination of Trace Thiophene
only.
in Refined Benzene by Gas Chromatography and Sulfur
Selective Detection
1.4 Consult current OSHA regulations, supplier’s Safety
Data Sheets, and local regulations for all materials used in this D7183 Test Method for Determination of Total Sulfur in
specification. Aromatic Hydrocarbons and Related Chemicals by Ultra-
violet Fluorescence
1.5 This international standard was developed in accor-
D7184 Test Method for Ultra Low Nitrogen in Aromatic
dance with internationally recognized principles on standard-
Hydrocarbons by Oxidative Combustion and Reduced
ization established in the Decision on Principles for the
Pressure Chemiluminescence Detection
Development of International Standards, Guides and Recom-
D7359 Test Method for Total Fluorine, Chlorine and Sulfur
mendations issued by the World Trade Organization Technical
in Aromatic Hydrocarbons and Their Mixtures by Oxida-
Barriers to Trade (TBT) Committee.
tive Pyrohydrolytic Combustion followed by Ion Chroma-
2. Referenced Documents tography Detection (Combustion Ion Chromatography-
CIC)
2.1 ASTM Standards:
D7360 Test Method for Analysis of Benzene by Gas Chro-
D848 Test Method for Acid Wash Color of Industrial Aro-
matography with External Calibration
matic Hydrocarbons
D7457 Test Method for Determining Chloride in Aromatic
D1492 Test Method for Bromine Index of Aromatic Hydro-
Hydrocarbons and Related Chemicals by Microcoulom-
carbons by Coulometric Titration
etry
D3437 Practice for Sampling and Handling Liquid Cyclic
D7504 Test Method for Trace Impurities in Monocyclic
Products
Aromatic Hydrocarbons by Gas Chromatography and
Effective Carbon Number
D7536 Test Method for Chlorine in Aromatics by Mono-
This specification is under the jurisdiction of ASTM Committee D16 on
chromatic Wavelength Dispersive X-ray Fluorescence
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and
Spectrometry
Their Derivatives.
D8005 Test Method for Color of Clear Liquids (Platinum-
Current edition approved No
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7124 − 17 D7124 − 19
Standard Specification for
Benzene for Use with Zeolite Based Catalysts
This standard is issued under the fixed designation D7124; 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
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 E29.
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 Safety Data Sheets, and local regulations for all materials used in this
specification.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
D848 Test Method for Acid Wash Color of Industrial Aromatic Hydrocarbons
D1492 Test Method for Bromine Index of Aromatic Hydrocarbons by Coulometric Titration
D1685 Test Method for Traces of Thiophene in Benzene by Spectrophotometry (Withdrawn 2009)
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4492D4735 Test Method for Analysis of Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
(Withdrawn 2018)
D4735D5194 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas ChromatographyChloride in
Liquid Aromatic Hydrocarbons
D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry
D5776 Test Method for Bromine Index of Aromatic Hydrocarbons by Electrometric Titration
D6304D5808 Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric
Karl Fischer TitrationDetermining Chloride in Aromatic Hydrocarbons and Related Chemicals by Microcoulometry
D7011 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography and Sulfur Selective
Detection
D7183 Test Method for Determination of Total Sulfur in Aromatic Hydrocarbons and Related Chemicals by Ultraviolet
Fluorescence
D7184 Test Method for Ultra Low Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced Pressure
Chemiluminescence Detection
D7359 Test Method for Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons and Their Mixtures by Oxidative
Pyrohydrolytic Combustion followed by Ion Chromatography Detection (Combustion Ion Chromatography-CIC)
D7360 Test Method for Analysis of Benzene by Gas Chromatography with External Calibration
D7375 Test Method for Trace Quantities of Water in Aromatic Hydrocarbons and Their Mixtures by Coulometric Karl Fischer
Titration (Withdrawn 2017)
This specification is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.
Current edition approved June 1, 2017Nov. 1, 2019. Published June 2017November 2019. Originally approved in 2005. Last previous edition approved in 20162017 as
D7124 – 16.D7124 – 17. DOI: 10.1520/D7124-17.10.1520/D7124-19.
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 Standards
volume information, refer to th
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