OT(o-Toluidine) is an organic compound which appears as a colourless to pale-yellow liquid with an aromatic and aniline-like odour. It is a stable compound but sensitive to air and light sensitive with a combustible nature and incompatible with strong oxidizing agents and acids. It has a chemical formula of CH3C6H4NH2 and molar mass of 107.156 grams per mol with a density of 1.004 grams per cubic centimetres. It is acute toxic in nature and show serious damage to the eye on exposure.