ASTM D7977-23 + Redline

ASTM D7977-23 + Redline

Standard Test Methods for Polymer Content of AMS (a-Methylstyrene)

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Details

1.1 This test method covers the determination of the polymer content of AMS (a-Methylstyrene). Dimers and trimers are not measured by these test methods.

1.2 This test method has been found applicable to determining the polymer content of AMS in concentrations up to 15?mg/kg with an LOQ of 0.6 mg/kg and an LOD of 0.2 mg/kg based on the data in Table 1. Samples containing more than 15 mg/kg of polymer must be suitably diluted before measurement.

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 Section 8.

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.


Significance and Use:

4.1 This test method can be used for determining polymer concentrations in AMS monomer.

4.2 This test method will not detect dimers and trimers.

4.3 This test method can be used for plant control and for specification analysis. Information regarding plant control and specification analysis can be found in test method D6367.

Additional Info

Author American Society for Testing and Materials (ASTM International)
Committee D16.07 - Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals
Published by ASTM
Document type Standard
Theme ,Aromatic hydrocarbons
ICS 71.080.15 : Aromatic hydrocarbons
Number of pages 4
Replace ASTM D7977-19 + Redline
Set ASTM Volume 06.04 - Multi-User - Single-Site Online
Keyword D7977

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