Methyl red, also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder. Methyl red is a pH indicator; it is red in pH under 4.4, yellow in pH over 6.2, and orange in between, with a pKₐ of 5.1
Formula: C15H15N3O2
Translation missing: en.product.form.price
- choosing a selection results in a full page refresh
- press the space key then arrow keys to make a selection