heteropoly acid


Also found in: Wikipedia.

heteropoly acid

[‚hed·ə′räp·ə·lē ′as·əd]
(inorganic chemistry)
Complex acids of metals, whose specific gravity is greater than 4, with phosphoric acid; an example is phosphomolybdic acid.
Mentioned in ?
References in periodicals archive ?
Summary: TEHRAN (FNA)- Iranian researchers waterproofed building materials with very high efficiency by using the green and noncorrosive heteropoly acid catalyst.
The difference in the acid strength between heteropoly acids and typical inorganic acids can be due to the fact that heteropoly anions are large anions bearing high negative charge density than inorganic acids.
Folin-Ciocalteu reagent consists of a yellow acidic solution containing complex polymeric ions formed from phosphomolybdic and phosphotungstic heteropoly acids [19].
The reagent oxidizes the phenolates and reduces the heteropoly acids, turning the sample blue.