PROCESS FOR PREPARING HYDROQUINONESULFONIC ACID Russian patent published in 1995 - IPC

Abstract RU 2041872 C1

FIELD: chemical industry. SUBSTANCE: hydroquinonesulfonic acid salts: a diethylammonium salt of hydroquinone sulfonic acid of the empirical formula: C₁₀H₁₇NO₅S, mp 129-130 C; the yield is 79.62% and a potassium salt of hydroquinonesulfonic acid of the empirical formula: C₆H₅KO₅S, the content of the active in gradient is 98.51% the yield is 82.61% Reagent 1: hydroquinone. Reagent 2: concentrated sulfuric acid and diethylamine or calcium carbonate and potassium chloride. Reaction conditions; sulfonation si carried out at 90-100 C in a vacuum of 2 to 60 mm Hg. EFFECT: more efficient preparation process. 2 tbl

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RU 2 041 872 C1

Authors

Sharovarnikova L.A.

Voronin V.G.

Kapinosova L.P.

Nazarchuk E.P.

Dates

1995-08-20—Published

1992-05-18—Filed