General Characteristics
Diborane is a colorless, unstable, highly toxic flammable gas with a sickly-sweet odor. The odor is subjective and therefore not reliable, and should not be used to detect the presence of the gas. Diborane mixture are shipped under high pressure in steel cylinders. Diborane can be diluted with argon, helium, hydrogen or nitrogen in order to provide concentrations less than 100%. Using diborane in this form can add an additional degree of control to the process, particularly when relatively small amounts of boron are to be deposited. Mixtures are analyzed prior to shipment to ensure that the concentration is in the range requested. Diborane mixtures are prepared as ordered. Concentrations other than those listed below are available upon request.