Method for clarifying discolored trimethylhydroquinone solutions
Trimethylhydroquinone (TMHQ) which is discolored in organic solution because of air oxidation can be made nearly colorless by addition of small amounts of alkali metal borohydride to the discolored solution. Products remaining in the TMHQ solution after discoloration removal can be extracted by wate...
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| Zusammenfassung: | Trimethylhydroquinone (TMHQ) which is discolored in organic solution because of air oxidation can be made nearly colorless by addition of small amounts of alkali metal borohydride to the discolored solution. Products remaining in the TMHQ solution after discoloration removal can be extracted by water wash. This technique represents a very simple and efficient method for removing discoloration which has proved troublesome in the prior art. |
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