Tolonium chloride

Template:Chembox new Tolonium chloride (INN, also known as toluidine blue O) is a compound used in histology.

Toluidine blue solution is used in testing for lignin, a complex organic molecule that bonds to cellulose fibres and strengthens and hardens the cell walls in plants. A positive toluidine blue test causes the solution to turn from blue to blue-green. A similar test can be performed with phloroglucinol–HCl solution, which turns red.

Toluidine Blue is often used to identify Mast cells. It is also used to stain proteoglycans and glycosaminoglycans in tissues such as cartilage.

Template:Chemistry-stub Template:WikiDoc Sources