ASTM D1686-10
(Test Method)Standard Test Method for Color of Solid Aromatic Hydrocarbons and Related Materials in the Molten State (Platinum-Cobalt Scale)
Standard Test Method for Color of Solid Aromatic Hydrocarbons and Related Materials in the Molten State (Platinum-Cobalt Scale)
SIGNIFICANCE AND USE
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.
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.
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Sections 7 and 9.
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Designation: D1686 − 10
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* 2.2 Other Document:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
1.1 This test method covers the visual measurement of the
3
1910.1200
color of thermally stable solids melting below 150°C. It is
applicable only to materials in which the color-producing
3. Significance and Use
bodies present have light absorption characteristics quite simi-
lar to those of the standards used.
3.1 Color by this test method is a measure of color-
1.2 In determining the conformance of the test results using
producing impurities present in the thermally stable solids.
this method to applicable specifications, results shall be
This test method is suitable for setting specifications and for
rounded off in accordance with the rounding-off method of
use as an internal quality control tool.
Practice E29.
4. Apparatus
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4.1 Color Comparison Tubes—Matched 100-mL, tall-form
standard.
Nessler tubes, provided with ground-on, optically clear, glass
1.4 This standard does not purport to address all of the
caps.Tubesshouldbeselectedsothattheheightofthe100-mL
safety concerns, if any, associated with its use. It is the
graduation mark is 300 6 3 mm above the bottom of the tube.
responsibility of the user of this standard to establish appro-
The use of heat-resistant tubes is preferred for safety reasons.
priate safety and health practices and determine the applica-
4.2 Color Comparator—A color comparator constructed to
bility of regulatory limitations prior to use. For specific hazard
permit visual comparison of light transmitted through tall-
statements see Sections 7 and 9.
form, 100-mL Nessler tubes in the direction of their longitu-
2. Referenced Documents
dinal axes.The comparator should be constructed so that white
2
2.1 ASTM Standards: light is reflected off a white plate and directed with equal
D1193 Specification for Reagent Water
intensity through the tubes, and should be shielded so that no
D3438 Practice for Sampling and Handling Naphthalene,
light enters the tubes from the side.
Maleic Anhydride, and Phthalic Anhydride
4.3 Oven—An oven, preferably of the forced draft type and
D3852 Practice for Sampling and Handling Phenol, Cresols,
capable of maintaining a constant temperature 61°C in the
and Cresylic Acid
range up to 150°C. Alternatively, the use of an aluminum
D6809 Guide for Quality Control and Quality Assurance
heating block provided with proper temperature control or
Procedures for Aromatic Hydrocarbons and Related Ma-
other similar equipment is permissible.
terials
E29 Practice for Using Significant Digits in Test Data to
5. Reagents
Determine Conformance with Specifications
5.1 Purity of Reagents—Reagent grade chemicals shall be
1
This test method is under the jurisdiction of ASTM Committee D16 on
used in all tests. Unless otherwise indicated, it is intended that
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
all reagents shall conform to the specifications of the Commit-
Subcommittee D16.02 on Oxygenated Aromatics.
tee onAnalytical Reagents of theAmerican Chemical Society,
Current edition approved Jan. 1, 2010. Published January 2010. Originally
approved in 1959. Last previous edition approved in 2004 as D1686 – 96 (2004).
DOI: 10.1520/D1686-10.
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
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D1686 − 10
A
TABLE 1 Platinum-Cobalt Color Standards
8. Sampling
Color Stock Color Stock
8.1 SamplethematerialinaccordancewithPracticesD3438
Standard Solution, Standard Solution,
No. mL No. mL
or D3852.
51 35 7
10 2 40 8
9. Procedure
15 3 50 10
20 4 60 12
9.1 Melt approximately 150 g of the sample and simultane-
25 5 70 14
ously
...
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:D1686–96(Reapproved2004) Designation:D1686–10
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.
1.2The following applies to all specified limits in this test method: for purposes of determining conformance with this test
method, 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
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
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 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 and health practices and determine the applicability of regulatory
limitations prior to use. For specific hazard statements see Sections 7 and 9.
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
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
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.
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 comparator should be constructed so that white light is
reflected off a white plate and directed with equal 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 ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.02 on Oxygenated Aromatics.
Current edition approved JuneJan. 1, 2004.2010. Published June 2004.January 2010. Originally approved in 1959. Last previous edition approved in 20002004 as
D1686 – 96 (20004). DOI: 10.1520/D1686-96R04.10.1520/D1686-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
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 ----------------------
D1686–10
4.3 Oven—An oven, preferably of the forced draft type and capable of maintaining a constant temperature 61°C in the range
up to 150°C. Alterna
...
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