2013 Edition, June 1, 2013
Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry
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Description / Abstract:
This test method is applicable to the determination of residual
4-tertiary-butylcatechol (TBC) in styrene monomer or AMS in the 1
to 100 mg/kg range. Any other compound producing color at 490 nm
when contacted with aqueous sodium hydroxide solution will
interfere. It may be compensated for by including it in the
preparation of the standard solutions, if its identity and
concentration in the sample are known.