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ASTM D8087-18

(Test Method)

Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus Colorimetry

Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus Colorimetry

SIGNIFICANCE AND USE
4.1 The color of maleic anhydride can be an indication of the purity of these materials. A high color after heating normally indicates contamination or decomposition.  
4.2 This standard is suitable for process quality control and determining if the product meets specifications.
SCOPE
1.1 This test method covers an instrumental method for the CIE (Commission International de l’Eclairage) tristimulus measurement of the color of maleic anhydride melt before and after prolonged heating under specified conditions of time and temperature. The measurement is converted to color values in the platinum-cobalt system.  
1.2 This test method covers the range 0 to100 Pt-Co color.  
1.3 In determining the conformance of the test results using this method to applicable specification, results shall be rounded in accordance with the rounding off methods of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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, 10.3, and 10.6.  
1.6 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-Jan-2018
ICS
71.080.50 - Anhydrides
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.02 - Oxygenated Aromatics
Current Stage
Ref Project

Relations

Refers
ASTM E313-15 - Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates
Effective Date
01-Jan-2015
Refers
ASTM E308-15 - Standard Practice for Computing the Colors of Objects by Using the CIE System
Effective Date
01-Apr-2015
Refers
ASTM D8005-15 - Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
Effective Date
01-Jun-2015
Refers
ASTM E308-17 - Standard Practice for Computing the Colors of Objects by Using the CIE System
Effective Date
01-May-2017
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

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ASTM D8087-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus ColorimetryASTM D8087-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus Colorimetry
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ASTM D8087-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale) Using Tristimulus Colorimetry
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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: D8087 − 18
Standard Test Method for
Color of Maleic Anhydride in the Molten State and After
Heating (Platinum-Cobalt Scale) Using Tristimulus
1
Colorimetry
This standard is issued under the fixed designation D8087; 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 D1209 Test Method for Color of Clear Liquids (Platinum-
Cobalt Scale)
1.1 This test method covers an instrumental method for the
D1686 Test Method for Color of Solid Aromatic Hydrocar-
CIE (Commission International de l’Eclairage) tristimulus
bons and Related Materials in the Molten State (Platinum-
measurement of the color of maleic anhydride melt before and
Cobalt Scale)
after prolonged heating under specified conditions of time and
D3438 Practice for Sampling and Handling Naphthalene,
temperature. The measurement is converted to color values in
Maleic Anhydride, and Phthalic Anhydride
the platinum-cobalt system.
D5386 Test Method for Color of Liquids Using Tristimulus
1.2 This test method covers the range 0 to100 Pt-Co color.
Colorimetry
D6809 Guide for Quality Control and Quality Assurance
1.3 In determining the conformance of the test results using
thismethodtoapplicablespecification,resultsshallberounded Procedures for Aromatic Hydrocarbons and Related Ma-
terials
in accordance with the rounding off methods of Practice E29.
D8005 Test Method for Color of Clear Liquids (Platinum-
1.4 The values stated in SI units are to be regarded as
Cobalt Scale)
standard. No other units of measurement are included in this
E29 Practice for Using Significant Digits in Test Data to
standard.
Determine Conformance with Specifications
1.5 This standard does not purport to address all of the
E179 Guide for Selection of Geometric Conditions for
safety concerns, if any, associated with its use. It is the
Measurement of Reflection and Transmission Properties
responsibility of the user of this standard to establish appro-
of Materials
priate safety, health, and environmental practices and deter-
E308 PracticeforComputingtheColorsofObjectsbyUsing
mine the applicability of regulatory limitations prior to use.
the CIE System
For specific hazard statements, see Sections 7, 10.3, and 10.6.
E313 Practice for Calculating Yellowness and Whiteness
1.6 This international standard was developed in accor-
Indices from Instrumentally Measured Color Coordinates
dance with internationally recognized principles on standard-
E691 Practice for Conducting an Interlaboratory Study to
ization established in the Decision on Principles for the
Determine the Precision of a Test Method
Development of International Standards, Guides and Recom-
3
2.2 Other Document:
mendations issued by the World Trade Organization Technical
OSHA regulations, 29 CFR paragraphs 1910.1000 and
Barriers to Trade (TBT) Committee.
1910.1200
2. Referenced Documents
3. Summary of Test Method
2
2.1 ASTM Standards:
3.1 A specimen is melted at 60°C.
D1193 Specification for Reagent Water
3.2 Color is measured by tristimulus values of light trans-
mitted by a freshly melted specimen as percent of light
transmitted by distilled water. Convert the measured tristimu-
1
This test method is under the jurisdiction of ASTM Committee D16 on
lus values by appropriate equations to the platinum-cobalt
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.02 on Oxygenated Aromatics.
scale.
Current edition approved Feb. 1, 2018. Published June 2018. DOI: 10.1520/
D8087-18
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 Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8087 − 18
3.3 Afterheatingfor2hat140°C,thecolorofthespecimen 6.4 Hydrochloric Acid (sp gr. 1.19)—Concentrated hydro-
is again measured by tristimulus values. Then convert the chloric acid (HCl).
measured tristimulus values by appropriate equations to the
6.5 Potassium Chloroplatinate, (K PtCl ).
2 6
platinum-cobalt scale.
6.6 Platimum-Cobalt Stock Solution—Dissolve 1.
...

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