Assertion: bromothymol blue | /r/Synonym | bromothymol sulfone phthalein
Facets:
Source sentences:
text: Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator.
text: Bromothymol blue, also known as bromothymol sulfone phthalein, is a pH indicator for weak acids and bases.