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2 018 114

(13)

C1

(51)

IPC

(21) (22)

Application

5005482/04, 1991-10-18

(22)

Actual filing date

1991-10-18

(45)

Published

1994-08-15

(72)

Inventor

Shormanov V.K.

(73)

Holder

Shormanov Vladimir Kambulatovich

METHOD OF NITROBENZENE DETERMINATION Russian patent published in 1994 - IPC

Abstract RU 2018114 C1

FIELD: analytical chemistry. SUBSTANCE: analyzed sample is treated with 10% solution of potassium nitrate in concentrated sulfuric acid. Reaction mixture is diluted with water, extracted with hexane at pH 0-1. Hexane extract is treated with dimethylformamide and 10% sodium hydroxide solution taken at the ratio 98:2 (by volume). Colored extract is separated and its absorption is determined by photometry. EFFECT: improved method of assay. 2 tbl

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RU 2 018 114 C1

Authors

Shormanov V.K.

Dates

1994-08-15—Published

1991-10-18—Filed

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