ASTM D1686-19

Standard Test Method for Color of Solid Aromatic Hydrocarbons and Related Materials in the Molten State (Platinum-Cobalt Scale)

SIGNIFICANCE AND USE
3.1 Color by this test method is a measure of color-producing impurities present in the thermally stable solids. This test method is suitable for setting specifications and for use as an internal quality control tool.
SCOPE
1.1 This test method covers the visual measurement of the color of thermally stable solids melting below 150°C. It is applicable only to materials in which the color-producing bodies present have light absorption characteristics quite similar to those of the standards used. The scope of this method covers the range of calibration which is 0 to 100 Pt-Co color.  
1.2 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.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Weight% should be used rather than Mass%.  
1.4 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 Sections 7 and 9.  
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: 14-Jan-2019
• ICS: 71.080.15 - Aromatic hydrocarbons
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.02 - Oxygenated Aromatics

Relations

• Refers: ASTM D8005-15 - Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
• Effective Date: 01-Jun-2015
• Refers: ASTM D3438-19 - Standard Practice for Sampling and Handling Naphthalene, Maleic Anhydride, and Phthalic Anhydride
• Effective Date: 01-Nov-2019
• Refers: ASTM D6809-02(2016) - Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
• Effective Date: 01-Nov-2016
• Refers: ASTM D3852-16 - Standard Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid
• Effective Date: 01-Jun-2016
• Refers: ASTM D3852-20 - Standard Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid
• Effective Date: 01-Jun-2020

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: D1686 − 19
Standard Test Method for
Color of Solid Aromatic Hydrocarbons and Related Materials
1
in the Molten State (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D1686; 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* D3852 Practice for Sampling and Handling Phenol, Cresols,
and Cresylic Acid
1.1 This test method covers the visual measurement of the
D6809 Guide for Quality Control and Quality Assurance
color of thermally stable solids melting below 150°C. It is
Procedures for Aromatic Hydrocarbons and Related Ma-
applicable only to materials in which the color-producing
terials
bodies present have light absorption characteristics quite simi-
D8005 Test Method for Color of Clear Liquids (Platinum-
lar to those of the standards used. The scope of this method
Cobalt Scale)
covers the range of calibration which is 0 to 100 Pt-Co color.
E29 Practice for Using Significant Digits in Test Data to
1.2 In determining the conformance of the test results using
Determine Conformance with Specifications
this method to applicable specifications, results shall be
E691 Practice for Conducting an Interlaboratory Study to
rounded off in accordance with the rounding-off method of
Determine the Precision of a Test Method
Practice E29.
2.2 Other Document:
1.3 The values stated in SI units are to be regarded as
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
3
standard. No other units of measurement are included in this
1910.1200
standard. Weight% should be used rather than Mass%.
3. Significance and Use
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1 Color by this test method is a measure of color-
responsibility of the user of this standard to establish appro-
producing impurities present in the thermally stable solids.
priate safety, health, and environmental practices and deter-
This test method is suitable for setting specifications and for
mine the applicability of regulatory limitations prior to use.
use as an internal quality control tool.
For specific hazard statements see Sections 7 and 9.
1.5 This international standard was developed in accor-
4. Apparatus
dance with internationally recognized principles on standard-
4.1 Color Comparison Tubes—Matched 100-mL, tall-form
ization established in the Decision on Principles for the
Nessler tubes, provided with ground-on, optically clear, glass
Development of International Standards, Guides and Recom-
caps.Tubesshouldbeselectedsothattheheightofthe100-mL
mendations issued by the World Trade Organization Technical
graduation mark is 300 6 3 mm above the bottom of the tube.
Barriers to Trade (TBT) Committee.
The use of heat-resistant tubes is preferred for safety reasons.
2. Referenced Documents 4.2 Color Comparator—A color comparator constructed to
2 permit visual comparison of light transmitted through tall-
2.1 ASTM Standards:
form, 100-mL Nessler tubes in the direction of their longitu-
D1193 Specification for Reagent Water
dinal axes.The comparator should be constructed so that white
D3438 Practice for Sampling and Handling Naphthalene,
light is reflected off a white plate and directed with equal
Maleic Anhydride, and Phthalic Anhydride
intensity through the tubes, and should be shielded so that no
light enters the tubes from the side.
1
This test method is under the jurisdiction of ASTM Committee D16 on
4.3 Oven—An oven, preferably of the forced draft type and
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.02 on Oxygenated Aromatics. capable of maintaining a constant temperature 61°C in the
Current edition approved Jan. 15, 2019. Published February 2019. Originally
range up to 150°C. Alternatively, the use of an aluminum
approved in 1959. Last previous edition approved in 2010 as D1686 – 10. DOI:
10.1520/D1686-19.
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 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,
...

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: D1686 − 10 D1686 − 19
Standard Test Method for
Color of Solid Aromatic Hydrocarbons and Related Materials
1
in the Molten State (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D1686; 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 test method covers the visual measurement of the color of thermally stable solids melting below 150°C. It is applicable
only to materials in which the color-producing bodies present have light absorption characteristics quite similar to those of the
standards used. The scope of this method covers the range of calibration which is 0 to 100 Pt-Co color.
1.2 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.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
Weight% should be used rather than Mass%.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. For specific hazard statements see Sections 7 and 9.
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:
D1193 Specification for Reagent Water
D3438 Practice for Sampling and Handling Naphthalene, Maleic Anhydride, and Phthalic Anhydride
D3852 Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
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
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Other Document:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Significance and Use
3.1 Color by this test method is a measure of color-producing impurities present in the thermally stable solids. This test method
is suitable for setting specifications and for use as an internal quality control tool.
4. Apparatus
4.1 Color Comparison Tubes—Matched 100-mL, tall-form Nessler tubes, provided with ground-on, optically clear, glass caps.
Tubes should be selected so that the height of the 100-mL graduation mark is 300 6 3 mm above the bottom of the tube. The use
of heat-resistant tubes is preferred for safety reasons.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons Aromatic, Industrial, Specialty and Related Chemicals and is the direct
responsibility of Subcommittee D16.02 on Oxygenated Aromatics.
Current edition approved Jan. 1, 2010Jan. 15, 2019. Published January 2010February 2019. Originally approved in 1959. Last previous edition approved in 20042010 as
D1686 – 96 (2004).D1686 – 10. DOI: 10.1520/D1686-10.10.1520/D1686-19.
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’sstandard’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

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D1686 − 19
4.2 Color Comparator—A color comparator constructed to permit visual comparison of light transmitted through tall-form,
100-mL Nessler tubes in the direction of their longitudinal axes. The comparato
...