Sodium amide has recently attracted interest as a catalyst for the decomposition of ammonia as a means of producing hydrogen. As such, its properties are of increasing relevance to the design and optimisation of sodium amide-based catalyst systems. We have previously observed interesting structural properties in solid sodium amide, including significant disorder in the amide units, even at room temperature. In this proposal, we request two days of access on the SANDALS instrument to measure the diffraction of a sample of sodium amide in order to gain insight into the disorder in the structure as a function of temperature, including the transition from solid to the melt.