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ASTM-D2121:2007 Edition

ASTM-D2121:2007 Edition

$35.75

D2121-07 Standard Test Methods for Polymer Content of Styrene Monomer and AMS (alpha-Methylstyrene)

Published By Publication Date Number of Pages
ASTM 2007 4
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1.1 These test methods cover the determination of the polymer content of styrene monomer and AMS (-Methylstyrene). It should be noted, however, that dimers and trimers are not measured by these test methods.

1.2 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 or AMS in concentrations up to 15 mg/kg. Samples containing more than 15 mg/kg of polymer must be suitably diluted before measurement.

1.3 Test Method B is a rapid visual procedure that is intended for the approximate evaluation of polymer to a maximum concentration of 1.0 weight %. Samples having a polymer content of 1.0 weight % or greater should be suitably diluted prior to measurement.

1.4 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 E 29.

1.5 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 8.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Summary of Test Method
Significance and Use
Interferences
Apparatus
2 Reagents and Materials
Hazards
Sampling and Handling
Calibration
Procedure
Calculation
Report
3 Precision and Bias
Quality Guidelines
Summary of Test Method
Apparatus
Reagents
Procedure
Report
Keywords
TABLE 1

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