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ASTM D3366-18

(Test Method)

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

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

SIGNIFICANCE AND USE
4.1 The color of maleic anhydride can be an indication of the purity of these materials. High colors normally indicate contamination or decomposition. 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 determination of the visual measurement of the color of maleic anhydride melt before and after prolonged heating under specified conditions of time and temperature. Color values are expressed in terms of platinum-cobalt standards.  
1.2 This test method covers the range 0 to 100 color standard numbers.  
1.3 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.  
1.4 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, 10.2.1, and 10.4.2.  
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 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

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ASTM D3366-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale)ASTM D3366-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale)
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ASTM D3366-18 - Standard Test Method for Color of Maleic Anhydride in the Molten State and After Heating (Platinum-Cobalt Scale)
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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: D3366 − 18
Standard Test Method for
Color of Maleic Anhydride in the Molten State and After
1
Heating (Platinum-Cobalt Scale)
This standard is issued under the fixed designation D3366; 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 the determination of the visual
D1686 Test Method for Color of Solid Aromatic Hydrocar-
measurement of the color of maleic anhydride melt before and
bons and Related Materials in the Molten State (Platinum-
after prolonged heating under specified conditions of time and
Cobalt Scale)
temperature. Color values are expressed in terms of platinum-
D3438 Practice for Sampling and Handling Naphthalene,
cobalt standards.
Maleic Anhydride, and Phthalic Anhydride
1.2 This test method covers the range 0 to 100 color
D6809 Guide for Quality Control and Quality Assurance
standard numbers.
Procedures for Aromatic Hydrocarbons and Related Ma-
terials
1.3 In determining the conformance of the test results using
this method to applicable specifications, results shall be D8005 Test Method for Color of Clear Liquids (Platinum-
Cobalt Scale)
rounded off in accordance with the rounding-off method of
Practice E29. E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.4 The values stated in SI units are to be regarded as
E691 Practice for Conducting an Interlaboratory Study to
standard. No other units of measurement are included in this
Determine the Precision of a Test Method
standard.
3
2.2 Other Document:
1.5 This standard does not purport to address all of the
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
safety concerns, if any, associated with its use. It is the
1910.1200
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3. Summary of Test Method
mine the applicability of regulatory limitations prior to use.
3.1 A specimen is melted at 60°C.
For specific hazard statements see Sections 7, 10.2.1, and
3.2 A freshly melted specimen is filled to mark into a
10.4.2.
Nessler tube and compared with Platinum-Cobalt color stan-
1.6 This international standard was developed in accor-
dards.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.3 After heating for2hat 140°C, the specimen is again
Development of International Standards, Guides and Recom-
compared to the color standards.
mendations issued by the World Trade Organization Technical
4. Significance and Use
Barriers to Trade (TBT) Committee.
4.1 The color of maleic anhydride can be an indication of
2. Referenced Documents
the purity of these materials. High colors normally indicate
2
2.1 ASTM Standards:
contamination or decomposition. This test method is suitable
D1193 Specification for Reagent Water
for setting specifications and for use as an internal quality
control tool.
1
This test method is under the jurisdiction of ASTM Committee D16 on
5. Apparatus
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.02 on Oxygenated Aromatics.
5.1 Color Comparison Tubes—Matched 100-mL, tall-form
Current edition approved Feb. 1, 2018. Published June 2018. DOI: 10.1520/
ε1
Nessler tubes, provided with ground-on, optically clear, glass
D3366-18. Last previous edition approved in 2003 as D3366-95(2003) which was
withdrawn January 2012 and reinstated in February 2018.
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.
*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 ----------------------
D3366 − 18
caps.Tubesshouldbeselectedsothattheheightofthe100-mL Cobalt Stock Solution in a cell having a 10-mm light path with
graduation mark is 300 6 3 mm above the bottom of the tube. distilled water in a matched cell as the reference so
...

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16  
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