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ASTM-D2121:2000 Edition

$35.75

D2121-00 Standard Test Methods for Polymer Content of Styrene Monomer and AMS (alpha-Methylstyrene)

Published By Publication Date Number of Pages
ASTM 2000 3
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1.1 These test methods cover the determination of the polymer content of styrene monomer and [alpha]-Methylstyrene (AMS). 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 The following applies to all specified limits in this standard: for purposes of determining conformance with this standard, an observed value or a calculated value shall be rounded off ‘to the nearest unit’ in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.

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 whoever uses this standard to consult and 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
Calibration and Standardization
Procedure
Calculation or Interpretation of Results
Report
Precision and Bias
3 Summary of Test Method
Apparatus
Reagents
Procedure
Report
Keywords
TABLE 1
ASTM-D2121
$35.75