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2 114 814

(13)

C1

(51)

IPC

(21) (22)

Application

96112233/04, 1996-06-17

(22)

Actual filing date

1996-06-17

(45)

Published

1998-07-10

(72)

Inventor

Korenman Ja.I.Ermolaeva T.N.Mishina A.V.

(73)

Holder

Voronezhskaja Gosudarstvennaja Tekhnologicheskaja Akademija

METHOD FOR EXTRACTION RECOVERY OF PHENOL, NITROPHENOLS OR HALOGEN-SUBSTITUTED NITROPHENOLS OF AQUEOUS SOLUTIONS COMPRISING 4-NITROSORESORCIN Russian patent published in 1998 - IPC

Abstract RU 2114814 C1

FIELD: analytic chemistry, namely, analytic control of sewage which comprises phenol, nitrophenols and halogen-substituted nitrophenols and 4-nitrosoresorcin. SUBSTANCE: sample of water is acidified to pH 2-3. Then ammonium sulfate is added, its quantity being 38.5-40.0 % of weight of solvent. The process is followed by extraction with acetone. EFFECT: improved efficiency of the method. 2 tbl

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RU 2 114 814 C1

Authors

Korenman Ja.I.

Ermolaeva T.N.

Mishina A.V.

Dates

1998-07-10—Published

1996-06-17—Filed

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