¹ Source: wiktionary.com
Medical Definition of Thymol blue
1. A dye used as an acid-base indicator, with a pK value at 1.7 and another at 8.9; red at pH values below 1.2, yellow between 2.8 and 8.0, and blue above 9.6. (05 Mar 2000)
Lexicographical Neighbors of Thymol Blue
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