: It consists of three aromatic benzene rings, featuring two bromine atoms, hydroxyl groups, and a central sulfonphthalein core.
Bromothymol blue is a weak acid that belongs to the sulfonephthalein dye family. : bromothymol blue
: In its pure form, it typically appears as a fine, pinkish-to-brownish crystalline powder. The Color Change Spectrum : It consists of three aromatic benzene rings,
(BTB), also known as -dibromothymolsulfonphthalein, is a widely used chemical compound primarily valued as a pH indicator in laboratory and industrial settings. Known for its high sensitivity near neutral pH levels, it is a staple in biological and chemical research. Core Properties and Chemical Structure The Color Change Spectrum (BTB), also known as
The most notable feature of bromothymol blue is its ability to change color based on the acidity or alkalinity of a solution. Its transition range is approximately . Solution Type Observed Color Below 6.0 Yellow Around 7.0 Green Above 7.6 Blue
This sensitivity around pH 7 makes it particularly useful for monitoring physiological processes where pH remains close to neutral, such as in enzyme activity studies . Safety Data Sheet: Bromothymol blue - Carl ROTH
