Pentoxide

Pentoxide may refer to:


 * Antimony pentoxide, Sb2O5
 * Arsenic pentoxide, As2O5
 * Carbon pentoxide, CO5
 * Dinitrogen pentoxide, N2O5
 * Iodine pentoxide, I2O5
 * Niobium pentoxide, Nb2O5
 * Phosphorus pentoxide, P4O10
 * Tantalum pentoxide, Ta2O5
 * Tungsten pentoxide, W18O49