Colorless, light, amine-smelling liquid. The explosion limit of MP vapor and air mixture is 2.2% ~ 15.2%. Miscible with water and usually organic solvents. In case of open flame and high heat, it can cause combustion explosion. It can react violently with concentrated sulfuric acid, fuming nitric acid and even explode. It is flammable, exposed to open flames, high heat or contact with oxidants, and has the risk of combustion explosion. It can react violently with concentrated sulfuric acid, fuming nitric acid, and even explode. It reacts strongly with halides (e.g. carbon tetrachloride).