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ASTM D2121

Standard Test Methods for Polymer Content of Styrene Monomer

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Organization: ASTM
Publication Date: 1 June 2016
Status: active
Page Count: 4
ICS Code (Aromatic hydrocarbons): 71.080.15
scope:

These 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.

Test 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.

Test Method B is 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.

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.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9

*A Summary of Changes section appears at the end of this standard

Document History

ASTM D2121
June 1, 2016
Standard Test Methods for Polymer Content of Styrene Monomer
These 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. Test Method A,...
March 15, 2015
Standard Test Methods for Polymer Content of Styrene Monomer
These 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. Test Method A,...
January 1, 2007
Standard Test Methods for Polymer Content of Styrene Monomer and AMS (Alpha Particle-Methylstyrene)
These test methods cover the determination of the polymer content of styrene monomer and AMS (a–Methylstyrene). It should be noted, however, that dimers and trimers are not measured by these test...
June 10, 2000
Standard Test Methods for Polymer Content of Styrene Monomer and AMS (Alpha Particle-Methylstyrene)
1. Scope 1.1 These test methods cover the determination of the polymer content of styrene monomer and AMS (α - Methylstyrene). It should be noted, however, that dimers and trimers are not measured by...
January 1, 1995
Standard Test Methods for Polymer Content of Styrene Monomer and Alpha-Methylstyrene
1. Scope 1.1 These test methods cover the determination of the polymer content of styrene monomer and α-Methylstyrene (AMS). It should be noted, however, that dimers and trimers are not measured by...
May 25, 1990
STANDARD TEST METHODS FOR POLYMER CONTENT OF STYRENE MONOMER
A description is not available for this item.
March 30, 1984
STANDARD TEST METHODS FOR POLYMER CONTENT OF STYRENE MONOMER
A description is not available for this item.

References

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