A blue chemical dye used in laboratories to test whether solutions are acidic or basic, changing color when pH changes.
From Greek 'bromos' (stench) + 'thymol' (a substance derived from thyme plant). The compound was created in the early 1900s by combining bromine with thymol for its color-changing properties.
Bromothymol blue is a classic science fair indicator—it's yellow in acidic conditions and blue in basic ones, which makes it perfect for pH testing. This simple dye has helped millions of students understand chemistry!
Complete word intelligence in one call. Free tier — 50 lookups/day.