Assay for KANKOH-SO No. 401 by titration method by tetraphenylboron with bromophenol blue as an indicator reagent.
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概要
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A simple and rapid titration method for KANKOH-SO No. 401 has been developed. KANKOH-SO No. 401 reacted with bromophenolblue (BPB) and formed a complex, which was extacted to chloroform. When tetraphenylborone (TPB) was added to this solution, TPB and KANKOH-SO No. 401 interacted quantitatively and BPB was found to be released from chloroform phase to water.Therefore, condition were established to determine KANKOH-SO No. 401 by titration method with TPB in the presence of small amounts of BPB as an indicator reagent.
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