ASTM D4590-18
- Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (-Methylstyrene) by Spectr
- standard by ASTM International, 06/01/2018
- Category: ASTM
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1.1 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.
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