ASTM D848-23

Standard Test Method for Acid Wash Color of Industrial Aromatic Hydrocarbons

SIGNIFICANCE AND USE
5.1 This test method is suitable for setting specifications on the materials referenced in 1.1. It may also be used as an internal quality control tool and in development or research work.  
5.2 The color developed in the acid layer gives an indication of impurities which if sulfonated would cause the material to be discolored.
SCOPE
1.1 This test method covers the determination of the acid wash color of benzene, toluene, xylenes, refined solvent naphthas, and similar industrial aromatic hydrocarbons.  
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. For specific hazard statements, see Section 8 and 12.1.  
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.

General Information

• Status: Published
• Publication Date: 31-Mar-2023
• 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

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: D848 − 23
Standard Test Method for
1
Acid Wash Color of Industrial Aromatic Hydrocarbons
This standard is issued under the fixed designation D848; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
3
1. Scope* 2.2 Other Document:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
1.1 This test method covers the determination of the acid
1910.1200
wash color of benzene, toluene, xylenes, refined solvent
naphthas, and similar industrial aromatic hydrocarbons.
3. Terminology
1.2 The values stated in SI units are to be regarded as
3.1 See Terminology D4790 for definitions of terms used in
standard. No other units of measurement are included in this
this test method.
standard.
4. Summary of Test Method
1.3 This standard does not purport to address all of the
4.1 A mixture of the aromatic hydrocarbon and sulfuric acid
safety concerns, if any, associated with its use. It is the
is vigorously shaken and the color of the acid layer is compared
responsibility of the user of this standard to establish appro-
with that of color standards prepared from CoCl and FeCl .
priate safety, health, and environmental practices and deter-
2 3
mine the applicability of regulatory limitations prior to use.
5. Significance and Use
For specific hazard statements, see Section 8 and 12.1.
5.1 This test method is suitable for setting specifications on
1.4 This international standard was developed in accor-
the materials referenced in 1.1. It may also be used as an
dance with internationally recognized principles on standard-
internal quality control tool and in development or research
ization established in the Decision on Principles for the
work.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.2 The color developed in the acid layer gives an indication
Barriers to Trade (TBT) Committee.
of impurities which if sulfonated would cause the material to
be discolored.
2. Referenced Documents
6. Apparatus
2
2.1 ASTM Standards:
6.1 Containers for Color Standards—Clear and
D1193 Specification for Reagent Water
unblemished, clean, French square, flint-glass, flat-bottom,
D3437 Practice for Sampling and Handling Liquid Cyclic
glass-stoppered, 30 mL capacity bottles holding 31 mL to
Products
33 mL when filled to the neck. The bottles shall be labeled with
D4790 Terminology of Aromatic Hydrocarbons and Related
the reference number of the color standard they contain (see
Chemicals
11.2).
D6809 Guide for Quality Control and Quality Assurance
Procedures for Aromatic Hydrocarbons and Related Ma-
6.2 Test Containers—Containers exactly like those de-
terials
scribed in 6.1 except that each French square bottle shall be
marked by etching to show when the bottle contains the
volume of 7 mL and 28 mL, respectively. Colored crayons and
1 similar markers shall not be used for marking the bottles.
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
7. Reagents
bility of Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and
Their Derivatives.
7.1 Purity of Reagents—Reagent grade chemicals shall be
Current edition approved April 1, 2023. Published April 2023. Originally
used in all tests. Unless otherwise indicated, it is intended that
approved in 1945. Last previous edition approved in 2018 as D848 – 18. DOI:
10.1520/D0848-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from U.S. Government Printing Office Superintendent of Documents,
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 ----------------------
D848 − 23
1
all reagents shall conform to the specifications of the Commit- 11.1.3 Solution C—Mix 3 ⁄2 volumes of Solution A with
1
tee on Analytical Reagents of the American Chemical Society, 36 ⁄2 volumes of Solution B and dilute with 90 volumes of
4
where such specifi
...

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: D848 − 18 D848 − 23
Standard Test Method for
1
Acid Wash Color of Industrial Aromatic Hydrocarbons
This standard is issued under the fixed designation D848; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This test method covers the determination of the acid wash color of benzene, toluene, xylenes, refined solvent naphthas, and
similar industrial aromatic hydrocarbons.
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. For specific hazard statements, see SectionsSection 8 and 12.1.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4790 Terminology of Aromatic Hydrocarbons and Related Chemicals
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
3
2.2 Other Document:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 See Terminology D4790 for definitions of terms used in this test method.
4. Summary of Test Method
4.1 A mixture of the aromatic hydrocarbon and sulfuric acid is vigorously shaken and the color of the acid layer is compared with
that of color standards prepared from CoCl and FeCl .
2 3
1
This test method 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, 2018April 1, 2023. Published June 2018April 2023. Originally approved in 1945. Last previous edition approved in 20142018 as
D848 – 14.D848 – 18. DOI: 10.1520/D0848-18.10.1520/D0848-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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.
*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 ----------------------
D848 − 23
5. Significance and Use
5.1 This test method is suitable for setting specifications on the materials referenced in 1.1. It may also be used as an internal
quality control tool and in development or research work.
5.2 The color developed in the acid layer gives an indication of impurities which if sulfonated would cause the material to be
discolored.
6. Apparatus
6.1 Containers for Color Standards—Clear and unblemished, clean, French square, flint-glass, flat-bottom, glass-stoppered,
30-mL30 mL capacity bottles holding 31 to 33 mL 31 mL to 33 mL when filled to the neck. The bottles shall be labeled with the
reference number of the color standard they contain (see 11.2).
6.2 Test Containers—Containers exactly like those described in 6.1 except that each French square bottle shall be marked by
etching to show when the bottle contains the volume of 7 and 28 mL, 7 mL and 28 mL, respectively. Colored crayons and similar
markers shall not be used for marking the bottles.
7. Reagents
7.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all
reagents shall conform to the specifications
...