CAS number:95-45-4
molecular formula：C4H8N2O2
molecular weight：116.12
EINECS number：202-420-1

English synonyms

DIMETHYLGLYOXIME,REAGENT(ACS)DIMETHYLGLYOXIME,REAGENT(ACS)DIMETHYLGLYOXIME,REAGENT(ACS);Diacetyloximetestsolution(ChP);DIMETHYLGLYOXIMEPChemicalbookWD;2,3-DIISONITROSOBUTANE;2,3-BUTANEDIONEDIOXIME;2,3-BUTANEDIONEDIOXIMEDISODIUMSALT;2,3-BUTENEDIONDIOXIME;(2E,3E)-2,3-Butanedionedioxime

Related categories

Fine chemicals, APIs, high-purity reagents; oximes; pharmaceutical analytical reagents; organic chemistry; biochemical reagents; chemical raw materials; chemical intermediates; organic chemical raw materials; carbonyl compounds; organic building blocks; general reagents; other biochemical reagents; raw materials ;chemical reagents;intermediates-organic intermediates;analytical purity;reagents;chemical intermediates;organic chemical raw materials;chemical raw materials;organic reagents;organic intermediates;organic raw materials;basic organic reagents;Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes;bc0001

Introduction

Butanedione oxime is a chemical with the molecular formula C4H8N2O2. White triclinic crystal or crystalline powder, soluble in ethanol, ether, acetone and pyridine, almost insoluble in water.

Chemical properties

Chemical properties

White crystals. Melting point 238-240 ℃. Soluble in alcohol, ether, acetone and pyridine. Only 0.5g can be dissolved per liter of water, and the solubility in chloroform, toluene and xylene is also very small.

Use

●  Used as analytical reagent, redox indicator and chromatographic analysis reagent

●  Identification and determination of nickel; separation of nickel from cobalt and other metals, separation of palladium from tin, gold, rhenium, iridium, etc.; cyanide, nickel, palladium, cobalt, iron (II), rhenium (VII) luminosity Determination

Production method

It is derived from the reaction between butanedione-oxime and hydroxylamine-sodium sulfonate. Add dimethylglyoxime to the hydroxylamine-sodium sulfonate solution, heat it to 70°C, and keep it warm for several hours to separate out dimethylglyoxime crystals, filter immediately after cooling, and wash with ice water until it no longer contains sulfate radicals , that is. Hydroxylamine-sodium sulfonate can be prepared by the following method: mix sodium nitroso Chemicalbook with crushed ice, add a suspension made of sodium bisulfite and water while stirring, and then add glacial acetic acid from below the liquid surface with stirring, Concentrated hydrochloric acid and crushed ice were then added to keep the reaction solution below 0°C, and the reaction was acidic with Congo red test paper. The insoluble precipitate was removed by filtration to obtain a hydroxylamine-sodium sulfonate solution.

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