... 99% Niobium Oxide 1. Chemical formula: 99.99% Nb2O5 2. Molecular Weight: 265.8 3. Appearance: powder ... 6. Specifications ProductFNb2O5 -045FNb2O5 -04FNb2O5 -035Main content Nb2O5 99.995 99.99 99.95Impurity content (max%)Ta0 ... was specialized in the production of Ta2O5, Nb2O5 and K2TaF7 over than 10 years, we have ... exported our Nb2O5 to Southeast Asian, Europe, USA, etc, ...