What is thymol blue?

Thymol blue is a pH indicator commonly used in chemistry labs to determine the acidity or alkalinity of a solution. It changes color depending on the pH of the solution, turning yellow in acidic conditions (pH below 2.0), green in neutral conditions (pH around 7.2), and blue in alkaline conditions (pH above 8.0).

Thymol blue is a synthetic dye derived from thymol, a natural compound found in the herb thyme. It is soluble in water and alcohol, making it easy to use in a variety of applications. In addition to its use as a pH indicator, thymol blue is also used in microbiology and medical research.

Thymol blue is considered safe to handle but should still be used with caution as it can cause skin and eye irritation. It is important to follow proper safety protocols when working with this chemical.