QUANTITATIVE SPECTROPHOTOMETRIC METHOD FOR DETERMINING AND IDENTIFYING ORTHO- CHLOROBENZILIDENEMALONIC ACID DINITRILES IN EXTRACTS Russian patent published in 2003 - IPC

Abstract RU 2207548 C1

FIELD: analytical methods. SUBSTANCE: alcoholic extract is mixed with 35-45% aqueous solution of sodium hydroxide and 0.04-0.6% alcoholic solution of m- dinitrobenzene, whereupon, 20 min later, reaction mixture is subjected to spectrophotometric determination. EFFECT: simplified procedure. 3 cl, 3 dwg, 1 tbl

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RU 2 207 548 C1

Authors

Druzhinin A.A.

Grachev S.A.

Dates

2003-06-27Published

2002-01-08Filed