[¦tü ə′mē·nō ¦tü ¦meth·əl ¦wən ¦thrē ¦prō‚pān′dī‚ȯl] (organic chemistry) HOCH2C(CH3)(NH2)CH2OH Crystals with a melting point of 109-111°C; soluble in water and alcohol; used in the synthesis of surface-active agents, pharmaceuticals, and vulcanizers, and as an emulsifying agent for cosmetics, leather dressings, polishes, and cleaning compounds.