unstable liquid; prepared from diborane; decomposes when heated or when allowed to stand for long periods of time, producing various products including diborane, tetraborane, hydrogen; spontaneously flammable in air; enthalpy of vaporization 31.8 kJ/mol [MER06] [CRC10]
Safety Profile
Ignites spontaneously in air. When heated to decomposition it emits toxic fumes of B.
