Molecular Formula: H2N=NH2. H2O Molecular weight: 50.06 GB NO: 82020 CAS NO. 10217-52-4 (7803-57-8) HS Code: 2825101000 Freezing point: -51.7 degree centigrade Melting point: -40 degree centigrade Boiling point: 118.5 degree centigrade Bensity: Relative density (water=1)1.032(21/4degree centigrade, 21degree centigrade Hydrazine hydrate/4degree centigrade water) Steam tension: 72.8 degree centigrade Surface tension (25degree centigrade)74.0mN/m Heat of formation -242.71kJ/mol Flash point: 72.8 degree centigrade Risk making: 20(Corrosives presenting alkalinous properties) Solubility: Soluble in water and alcohol, insoluble in chloroform and ethyl ether Product category: Chem. Intermediate Appearance and other characteristics: Hydrazine hydrate is a colorless, fuming and basic solution with a peculiar bad smell, flammable and corroding glass, rubber and leather, Hydrazine hydrate is severe toxicity accumulates and harms blood and nerves.