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Dimethylglyoxime Chemical Structure

What is Dimethylglyoxime?

Dimethylglyoxime, also known as DMG, is a chemical compound with the molecular formula C4H8N2O2. It is a diamide i.e., containing two amide functional groups in its structure. The neutral and anionic forms of this substance are denoted by the acronyms dmgH2 and dmgH−, respectively, where H represents hydrogen. It is a well known reagent in analytical chemistry.

Macsen Laboratories is the leading manufacturer and supplier of Dimethylglyoxime with ISO certification.
Name of Product Dimethylglyoxime
IUPAC Name N,N′-Dihydroxy-2,3-butanediimine
Synonyms Biacetyl dioxime; Diacetyldioxime; Chugaev's reagent; 2,3-Diisonitrosobutane; Butane-2,3-dioxime
CAS No 95-45-4
Molecular Formula C4H8N2O2
Molecular Weight 116.12 g/mol
Pubchem CID 135399895


SR. No Criteria Limit/Specification
1 Appearance (form) Crystalline Solid Powder
2 Appearance (color) White to Off-white
3 Solubility Soluble 2% in Methanol
4 Density 1.37 g/cm3
5 Melting point 238-242°C (dec.)
6 Sulphated Ash NMT 0.1%
7 Assay (Via Nickel complex) NLT 98.0%


Dimethylglyoxime has several uses in analytical chemistry, some of which are as follows-

  • Dimethylglyoxime is commonly used to detect the presence of certain metal ions, like nickel, palladium or cobalt. It forms brightly colored precipitates or complexes with these metal ions, which makes it useful for their qualitative and quantitative analysis in various samples.
  • It can act as a bidentate ligand in coordination compounds. It forms stable chelates with various metal ions, and these complexes are often used in the study of coordination chemistry, crystallography, and spectroscopy.
  • Dimethylglyoxime is sometimes used in organic synthesis, particularly in reactions involving the functionalization of carbonyl compounds or the formation of oximes.
  • It is additionally employed in the refinement of precious metals, such as precipitating palladium from palladium chloride solutions.


Q. What is dimethylglyoxime used for?

Dimethylglyoxime has many applications in analytical chemistry, which includes as a detecting reagent, a precipitating reagent, and a photometric reagent for various metal ions such as platinum, palladium and nickel.

Q. What  are the hazards associated withe use of dimethylglyoxime?

Dimethylglyoxime may cause irritation upon inhalation, ingestion or upon coming in contact with eye/skin. It is also flammable under certain conditions and thus needs to be handled with care.

Q. Is DMG basic or acidic?

Dimethylglyoxime (DMG) is a weak acid.

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