Description_x000D_ General description_x000D_ Phosphotungstic acid hydrate is a heteropolyacid._x000D_ Application_x000D_ Phosphotungstic acid hydrate may be used as a staining agent for the transmission electron microscope (TEM) imaging of cetyltrimethylammonium bromide (CTAB) coated gold nanorods._x000D_ It may be used in the preparation of:_x000D_ • Phosphotungstic acid doped ormosil hybrid networks._x000D_ • Niobia supported phosphotungstic acid (PTA) catalysts._x000D_ • Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films._x000D_ Packaging_x000D_ 10, 25, 100, 250, 500 g in glass bottle