
Metatungstic acid is a highly soluble and colorless crystal with a density of 3.93g/cm3. It is a kind of polytungstic acid with the formula H6 [H2 (W3O10) 4] ? nH2O, in which n is 10 or 23. It decomposes at 50°C. Its solubility is 88.57g/100cm3 (in water, at the temperature of 25°C). Metatungstic acid can be made from the salt of metatungstic acid (metatungstate). Metoplutamate is an important industrial product developed in the late 1970s. It is mainly used as…