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Niobium pentoxide is the inorganic compound with the formula Nb2O5. It is a colourless insoluble solid that is fairly unreactive.
N 1641 (OTTO) Niobium pentoxide 99.95% Cas no 1313-96-8 - used mainly in the production of niobium metal, but specialized applications exist for lithium niobate and as a component of optical glass.