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ASTM D4734-20

(Specification)

Standard Specification for Refined Benzene-545

Standard Specification for Refined Benzene-545

ABSTRACT
This specification covers benzene-545. Tests shall be performed to determine the property requirements of benzene-545 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, appearance, and solidification point.
SCOPE
1.1 This specification covers benzene-545.  
1.2 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 in Practice E29.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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-Mar-2020
ICS
87.060.30 - Solvents
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

Refers
ASTM D7184-20 - Standard Test Method for Ultra Low Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced Pressure Chemiluminescence Detection
Effective Date
01-Jun-2020
Referred By
ASTM D4790-23 - Standard Terminology of Aromatic Hydrocarbons and Related Chemicals
Effective Date
01-Apr-2020

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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: D4734 −20
Standard Specification for
1
Refined Benzene-545
This standard is issued under the fixed designation D4734; 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* D5776 Test Method for Bromine Index of Aromatic Hydro-
carbons by Electrometric Titration
1.1 This specification covers benzene-545.
D6875 Test Method for Solidification Point of Industrial
1.2 The following applies to all specified limits in this
Organic Chemicals by Thermistor
standard: for purposes of determining conformance with this
D7011 Test Method for Determination of Trace Thiophene
standard, an observed value or a calculated value shall be
in Refined Benzene by Gas Chromatography and Sulfur
rounded off “to the nearest unit” in the last right-hand digit
Selective Detection
used in expressing the specification limit in accordance with
D7183 Test Method for Determination of Total Sulfur in
the rounding-off method in Practice E29.
Aromatic Hydrocarbons and Related Chemicals by Ultra-
violet Fluorescence
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this D7184 Test Method for Ultra Low Nitrogen in Aromatic
Hydrocarbons by Oxidative Combustion and Reduced
standard.
Pressure Chemiluminescence Detection
1.4 Consult current OSHA regulations, supplier’s Safety
D7360 Test Method for Analysis of Benzene by Gas Chro-
Data Sheets, and local regulations for all materials used in this
matography with External Calibration
specification.
D7504 Test Method for Trace Impurities in Monocyclic
1.5 This international standard was developed in accor-
Aromatic Hydrocarbons by Gas Chromatography and
dance with internationally recognized principles on standard-
Effective Carbon Number
ization established in the Decision on Principles for the
D8005 Test Method for Color of Clear Liquids (Platinum-
Development of International Standards, Guides and Recom-
Cobalt Scale)
mendations issued by the World Trade Organization Technical
E29 Practice for Using Significant Digits in Test Data to
Barriers to Trade (TBT) Committee.
Determine Conformance with Specifications
E1064 Test Method for Water in Organic Liquids by Coulo-
2. Referenced Documents
metric Karl Fischer Titration
2
2.1 ASTM Standards:
E2680 Test Method for Appearance of Clear, Transparent
D852 Test Method for Solidification Point of Benzene
Liquids (Visual Inspection Procedure)
D1492 Test Method for Bromine Index of Aromatic Hydro-
2.2 Other Document:
carbons by Coulometric Titration
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
3
D3437 Practice for Sampling and Handling Liquid Cyclic
1910.1200
Products
D4735 Test Method for Determination of Trace Thiophene
in Refined Benzene by Gas Chromatography
D5386 Test Method for Color of Liquids Using Tristimulus
Colorimetry
1
This specification is under the jurisdiction of ASTM Committee D16 on
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and
Their Derivatives.
Current edition approved April 1, 2020. Published April 2020. Originally
approved in 1987. Last previous edition approved in 2019 as D4734 – 19. DOI:
10.1520/D4734-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. 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
1

---------------------- Page: 1 ----------------------
D4734 − 20
3. Properties
Solidification point, anhydrous 5.45 D852 or D6875
basis, min, °C
3.1 Benzene-545 shall conform to the following require-
ments: A
If more than one method is listed, the producer and user should agree on the
referee method.
ASTM Test
Property Specification
A
Method
3.2 See Section S1.1 for non-mandatory supplementary
Benzene, min, mass % 99.90 D7360 or D7504
requirements.
Sulfur, max, mg/kg 1.0 D7183
Thiophene, max, mg/kg 0.6 D4735 or D7011
Toluene, max, mass % 0.05 D7360 or D7504
4. Sampling
Nonaromatic hydrocarbons, max, 0.10
D7360 or D
...

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: D4734 − 19 D4734 − 20
Standard Specification for
1
Refined Benzene-545
This standard is issued under the fixed designation D4734; 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 Scope*
1.1 This specification covers benzene-545.
1.2 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 in Practice E29.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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
2.1 ASTM Standards:
D848 Test Method for Acid Wash Color of Industrial Aromatic Hydrocarbons
D852 Test Method for Solidification Point of Benzene
D1492 Test Method for Bromine Index of Aromatic Hydrocarbons by Coulometric Titration
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4735 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry
D5776 Test Method for Bromine Index of Aromatic Hydrocarbons by Electrometric Titration
D6875 Test Method for Solidification Point of Industrial Organic Chemicals by Thermistor
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
D7360 Test Method for Analysis of Benzene by Gas Chromatography with External Calibration
D7504 Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon
Number
D8005 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E1064 Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration
E2680 Test Method for Appearance of Clear, Transparent Liquids (Visual Inspection Procedure)
1
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 Nov. 1, 2019April 1, 2020. Published November 2019April 2020. Originally approved in 1987. Last previous edition approved in 20182019 as
D4734 – 18D4734 – 19.A. DOI: 10.1520/D4734-19.10.1520/D4734-20.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1

---------------------- Page: 1 ----------------------
D4734 − 20
2.2 Other Document:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
2

---------------------- Page: 2 ----------------------
D4734 − 20
3. Properties
3.1 Benzene-545 shall conform to the following requirements:
ASTM Test
Property Specification
A
Method
Benzene, min, mass % 99.90 D7360 or D7504
Sulfur, max, mg/kg 1.0 D7183
Thiophene, max, mg/kg 0.6 D4735 or D70
...

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1.1 These test methods cover the quantitative determination of dissolved or occluded water present in any proportion in liquid pine chemicals, such as turpentine, pinene, dipentene, pine oil, tall oil, and tall oil fatty acids. Three methods of moisture testing are included. The Karl Fisher titration method is the preferred method for testing tall oil, Test Methods D803.  
1.1.1 The Karl Fischer Titration method is based on the reaction between water and a complex reagent2 consisting of iodine, sulfur dioxide, pyridine, and methanol, whereby the iodine is converted to a colorless compound. The appearance of a persistent iodine color in the reaction mixture indicates the complete removal of free water by reaction with the reagent, and the endpoint may be measured colorimetrically. Automatic titrators find this endpoint by the restoration of a current strength when the resistance provided by the presence of water is eliminated. Amperometric automatic titrators find this endpoint by detecting the current flow that occurs once water is eliminated.  
1.1.2 The coulometric titration method determines water content by electronic integration of a current sufficient to generate the precise amount of iodine from the required reagent to react with the water in the sample.  
1.1.3 The azeotropic method utilizes the relatively low boiling point of water, as compared with other sample constituents, in a toluene or xylene matrix so that water is collected in a trap and measured.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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.

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