Toluidine bule

Uses

1. A reagent used in redox titrations in chemistry. 2. Used in ophthalmology to examine corneal defects. 3. Used in histochemistry to determine deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). 4. Used to diagnose diphtheria. 5. Used in the dye industry, such as in the dyeing of wool and silk.