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1 420 888

(13)

A1

(51)

IPC

(21) (22)

Application

4168251/04, 1986-10-31

(22)

Actual filing date

1986-10-31

(45)

Published

1994-08-15

(72)

Inventor

Sereda B.P.Kiseleva G.V.Rjabin V.A.Il'Icheva E.B.Masalovich V.M.Stasik O.I.Reshetnikov B.S.Bulanova G.A.Smirnov S.V.Soloshenko A.A.

METHOD OF SYNTHESIS OF BASIC CHROME (III) FORMATE Russian patent published in 1994 - IPC

Abstract SU 1420888 A1

FIELD: chemical technology. SUBSTANCE: aqueous solution of chrome (6+) oxide is reacted with formaldehyde feeding at the rate 0.2-0.35 kg/kg CrO3·4 at mass ratio Cr(6+): CH2O (1.4-1.6): 1 at 90-95 C. Reaction mixture is treated with formic acid adding at concentration providing mass ratio Crобщ:HCOOH 0.35 -0.37 :1 : HCOOH = (0.35-0.37): 1. The end product is crystallized. Method ensures to decrease formic acid consumption more than 1.5 times. EFFECT: decreased consumption of formic acid.

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SU 1 420 888 A1

Authors

Sereda B.P.

Kiseleva G.V.

Rjabin V.A.

Il'Icheva E.B.

Masalovich V.M.

Stasik O.I.

Reshetnikov B.S.

Bulanova G.A.

Smirnov S.V.

Soloshenko A.A.

Dates

1994-08-15—Published

1986-10-31—Filed

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