METHOD OF PRODUCING PHOSPHOROUS ACID FROM WHITE PHOSPHORUS Russian patent published in 2012 - IPC C01B25/163 

Abstract RU 2460687 C1

FIELD: chemistry.

SUBSTANCE: organic complex of palladium - tris(dibenzylidene acetone)palladium reacts with white phosphorus in a tetrahydrofuran medium. The palladium phosphides formed undergo hydrolysis at temperature 20-70°C with degassed water. Molar ratio of reactants palladium complex: white phosphorus: water is equal to 1:(1-20):(12-480). The end product is extracted by separating the residue and evaporating the filtrate in a vacuum.

EFFECT: method is environmentally safe, selective and enables to obtain phosphorous acid from simple and readily available reactants with high output.

3 cl, 1 tbl, 11 ex

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RU 2 460 687 C1

Authors

Jakhvarov Dmitrij Grigor'Evich

Kagirov Rustam Muratovich

Sinjashin Oleg Gerol'Dovich

Dates

2012-09-10Published

2011-02-25Filed