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ASTM D 6144 Document Information:
Title
Standard Test Method for Analysis of AMS (a-Methylstyrene) by Capillary Gas Chromatography
ASTM International
Publication Date:
Jun 1, 2008
Scope:
This test method covers the determination of the purity of AMS
(a-methylstyrene) by gas chromatography. Calibration of the gas
chromatography system is done by the external standard calibration
technique.
This test method has been found applicable to the measurement of
impurities such as cumene, 3-methyl-2- cyclopentene-1-one,
n-propylbenzene, tert-butylbenzene,
sec-butylbenzene, cis-2-phenyl-2-butene,
acetophenone, 1-phenyl-1-butene, 2-phenyl-2-propanol,
trans-2-phenyl-2-butene, m-cymene,
p-cymene, and phenol, which are common to the
manufacturing process of AMS. The method has also been found
applicable for the determination of para-tertiarybutylcatechol
typically added as a stabilizer to AMS. The impurities in AMS can
be analyzed over a range of 5 to 800 mg/kg by this method. (See
Table 1.) The limit of detection for these impurities is typically
in the range of 5 to 10 mg/kg. (See Table 1.)
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.
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 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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- acetophenone
- alpha methylstyrene
- AMS
- analysis by gas chromatography
- benzene
- butenylbenzene
- butylbenzene
- catechol
- cumene
- cymene
- phenol
- propylbenzene
- toluene
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