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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.
1.1 This test method covers the determination of the polymer content of AMS (α-Methystyrene). 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. 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 .
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 .
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D6367 Specification for AMS (-Methylstyrene)
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
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Other DocumentOSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
ICS Number Code 71.080.15 (Aromatic hydrocarbons)
UNSPSC Code 12352005(Aromatic or heterocyclic compounds)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D7977-19, Standard Test Methods for Polymer Content of AMS (α-Methylstyrene), ASTM International, West Conshohocken, PA, 2019, www.astm.orgBack to Top