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1 556 061

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A1

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Application

4472847/04, 1988-08-11

(22)

Actual filing date

1988-08-11

(45)

Published

1996-01-10

(72)

Inventor

Khaldeev G.V.Novoselova E.A.Koz'Minykh V.O.Andrejchikov Ju.S.

MALEIC ACID P-NITROBENZYLIDENE HYDRAZIDE AS AN INHIBITOR OF STEEL ETCHING IN HYDROCHLORIC ACID Russian patent published in 1996 - IPC

Abstract SU 1556061 A1

FIELD: organic chemistry. SUBSTANCE: synthesis is carried out by reaction of p-nitrobenzaldehyde hydrazone with maleic anhydride in ethyl acetate medium. The yield is 94%, m. p. is 274-275 C, empirical formula is C11H9N3O5. Efficacy of inhibition of carbon steel etching exceeds that of oleic acid (by protective effect - by 18.17-43.24%). Synthesized compound is organic nitrocompound. EFFECT: increased effectiveness of inhibitor. 1 tbl

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SU 1 556 061 A1

Authors

Khaldeev G.V.

Novoselova E.A.

Koz'Minykh V.O.

Andrejchikov Ju.S.

Dates

1996-01-10—Published

1988-08-11—Filed

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