ASTM D 2121 : 2016 : REDLINE
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Methods for Polymer Content of Styrene Monomer
25-11-2023
English
26-07-2016
Important note : All end users must be registered with an Account prior to user licenses being assigned.CONTAINED IN VOL. 06.04, 2017 Defines the determination of the polymer content of styrene monomer.
| Committee |
D 16
|
| DocumentType |
Redline
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| Pages |
4
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
1.1These test methods cover the determination of the polymer content of styrene monomer. It should be noted, however, that dimers and trimers are not measured by these test methods.
1.2Test Method A, which is based on the use of a spectrophotometer or photometer, is intended for the quantitative determination of the polymer content of styrene monomer in concentrations up to 15 mg/kg. Samples containing more than 15 mg/kg of polymer must be suitably diluted before measurement.
1.3Test Method Bis a rapid visual procedure that is intended for the approximate evaluation of polymer to a maximum concentration of 1.0 mass %. Samples having a polymer content of 1.0 mass % or greater should be suitably diluted prior to measurement.
1.4In 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.
1.5The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6This 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 Section 9.
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| ASTM D 3437 : 2015 : REDLINE | Standard Practice for Sampling and Handling Liquid Cyclic Products |
| ASTM D 4790 : 2014 : REDLINE | Standard Terminology of Aromatic Hydrocarbons and Related Chemicals |
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