31. If not inhibited, it will form nitrogen tetroxide on contact with most metals and some organic materials. 32. :: Cheers, It appears the fuel he demanded use of was unsymmetrical dimethylhydrazine and nitrogen tetroxide . 33. The nitrogen tetroxide fuel is used to steer the Titan 4's two strap-on booster rockets. 34. The tetroxide and a related compound potassium osmate are important oxidants for chemical synthesis, despite being very poisonous. 35. It involves the local administration of osmium tetroxide ( OsO 4 ), which is a highly toxic compound. 36. The unstable species further react to form nitrogen dioxide which is then purified and condensed to form dinitrogen tetroxide . 37. It consists of 84 % nitric acid ( ), 13 % dinitrogen tetroxide and 1 2 % water. 38. Korolev aggressively opposed the UR-500 due to its use of extremely toxic nitrogen tetroxide and UDMH propellants. 39. Since osmium tetroxide is expensive and toxic, other metals have been used to prepare vicinal diols from olefins. 40. It is hypergolic with dinitrogen tetroxide as oxidizer, and both can be stored as liquids at room temperature.