Molecular fromula: NH2H. HCl Molecular weight: 69.49 Physical and chemical properties: This product is white, hygroscopic crystal, is prone to absorbmoisture, soiuble in water and alcohol. It is decomposable in moisture. Gravity 1.67(n, c). It is stable at ambient temperature, noninflammable. Melting point approx. 151. It has strong reductibility. This product is poisonous, irritative to the skin, extremely decomposable and may cause fire or explosion when headted. This product is poisonous, irritative to the skin, extremely decomposable and may cause fire or explosion when headted.