Astm D 4827 – 03 pdf free download

Standard Test Method for
Determining the Unreacted Monomer Content of Latexes
Using Capillary Column Gas Chromatography1

This standard is issued under the fixed designation D 4827; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This test method is for the determination of the unreacted monomer content of acrylic latexes. Monomers that have
been successfully determined by this procedure include n-butyl
methacrylate, n-butyl acrylate, styrene, and methyl methacrylate. The determination of other monomers has not been
evaluated, but this test method is believed to be applicable. The
established working range of this test method is from 100 to
1000 µg/g, but there is no reason to believe it will not work
outside of this range, provided that appropriate dilutions and
adjustments in specimen size are made

1.2 The unreacted monomer in acrylic latexes is expected to
change with time and environmental factors. This time dependence of the determination may be seen as an artificially large
deviation of results, making the test method mostly applicable
for in-house quality control, where sampling and analysis
conditions can be better controlled.

1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.

1.4 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 7.