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His firm plans to produce vanadium pentoxide in South Africa to be used in VRBs that Bushveld hopes to erect across Africa.

Wyser said vanadium pentoxide was available and cheap, but was just one of many materials being tested for car batteries at the moment with an uncertain outcome.

Such oxides as sulphur trioxide, nitrogen pentoxide, etc., do not possess acid properties except in combination with water.

Maleic anhydride is obtained by distilling fumaric acid with phosphorus pentoxide.

That is possible because this part of the transistor is made of tantalum pentoxide, a material whose atoms are arranged in a lattice which contains holes large enough for copper atoms to squeeze through.