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2 142 125

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IPC

(21) (22)

Application

97117482/28, 1997-10-21

(24)

Start date

1997-10-21

(22)

Actual filing date

1997-10-21

(45)

Published

1999-11-27

(72)

Inventor

Shormanov V.K.Fursova I.A.Akilonova N.N.Markelov M.Ju.Duritsyn E.P.Vanina M.D.Rudskaja V.I.Safonova I.A.

(73)

Holder

Shormanov Vladimir Kambulatovich

METHOD OF DETERMINING AROMATIC HYDROXY DERIVATIVE ESTERS Russian patent published in 1999 - IPC

Abstract RU 2142125 C1

FIELD: analytical methods. SUBSTANCE: sample is treated with solution of potassium nitrate in concentrated sulfuric acid at 100 C. Reaction mixture is diluted with water, alkalized with sodium hydroxide solution to pH 2, treated with rhodamine G, reaction product is extracted with toluene, and toluene solution is photometrically analyzed. EFFECT: increased sensitivity and accuracy of determination. 3 tbl, 2 ex

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RU 2 142 125 C1

Authors

Shormanov V.K.

Fursova I.A.

Akilonova N.N.

Markelov M.Ju.

Duritsyn E.P.

Vanina M.D.

Rudskaja V.I.

Safonova I.A.

Dates

1999-11-27—Published

1997-10-21—Filed