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butter yellow

Pronunciation: bŭt′er yel′ō

Definition: A fat-soluble yellow dye (MW 225) that has hepatic carcinogenic action in experimental animals; used as an indicator of pH (red, at pH 2.9, yellow at pH 4).

Synonym(s): dimethylaminoazobenzene, methyl yellow

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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