ChemicalBook > CAS DataBase List > Dimethylglyoxime

Dimethylglyoxime

CAS No.95-45-4
Chemical Name:Dimethylglyoxime
CBNumber:CB3668685
Molecular Formula:C4H8N2O2
Formula Weight:116.12
MOL File:95-45-4.mol

Dimethylglyoxime Property

Melting point 240-241 °C(lit.)
Boiling point 217.15°C (rough estimate)
Density 1.2829 (rough estimate)
bulk density 620kg/m3
refractive index 1.4880 (estimate)
storage temp. Sealed in dry,Room Temperature
solubility Soluble in alcohol, acetone, ether
pka pK1:10.60 (25°C)
form Powder
color White to off-white
Odor Odorless
Water Solubility INSOLUBLE
Merck 14,3246
BRN 506731
Stability Stable. Incompatible with strong oxidizing agents.
InChIKey JGUQDUKBUKFFRO-GGWOSOGESA-N
CAS DataBase Reference 95-45-4(CAS DataBase Reference)
FDA UNII 2971MFT1KY
NIST Chemistry Reference 2,3-Butanedione, dioxime(95-45-4)
EPA Substance Registry System 2,3-Butanedione, dioxime (95-45-4)
UNSPSC Code 12352126
NACRES NA.22

Safety

Hazard Codes :Xn,T,F
Risk Statements :22-20/21/22-25-11
Safety Statements :22-24/25-36-45
RIDADR :UN 2926 6.1(4.1) / PGIII
WGK Germany :3
RTECS :EK2975000
F :10
Hazard Note :Harmful
TSCA :Yes
PackingGroup :III
HS Code :29280090

NFPA 704:

	3
3		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H228
Precautionary statements P210-P240-P241-P280-P370+P378

Dimethylglyoxime Price More Price(27)

Brand: Sigma-Aldrich(India)
Product number: 40390
Product name : Dimethylglyoxime
Purity: puriss. p.a., ACS reagent, for the detection of Ni, ≥99.0% (TLC)
Packaging: 25G
Price: ₹2175.83
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 40390
Product name : Dimethylglyoxime
Purity: puriss. p.a., ACS reagent, for the detection of Ni, ≥99.0% (TLC)
Packaging: 100G
Price: ₹4254.23
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 40390
Product name : Dimethylglyoxime
Purity: puriss. p.a., ACS reagent, for the detection of Ni, ≥99.0% (TLC)
Packaging: 500G
Price: ₹12860.1
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 162574
Product name : Dimethylglyoxime
Purity: ACS reagent, ≥99%
Packaging: 100G
Price: ₹2316.55
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 162574
Product name : Dimethylglyoxime
Purity: ACS reagent, ≥99%
Packaging: 500G
Price: ₹5293.43
Updated: 2022/06/14
Buy: Buy

Dimethylglyoxime Chemical Properties,Usage,Production

Chemical Properties Dimethylglyoxime is a white crystalline powder. Soluble in alcohol, ether, acetone and pyridine. Solubility in water 0.5g/l, insoluble in tolerate chloroform, toluene, xylene. It is one of the first selective organic reagents applied in analytical chemistry. It is an extraordinary sensitive and specific reagent for nickel. under appropriate conditions dimethylglyoxime is specific for nickel(II) and palladium(II), but it also forms coloured water-soluble complexes with iron(II), cobalt(II) and copper(II).
Uses Dimethylglyoxime is specific for nickel(II) ions in ammoniacal solution if alkali tartrate is employed as masking agent to keep in solution the possibly interfering hydrolysing salts.
Uses Dimethylglyoxime is used as nickel-specific complexing reagent; determination of palladium.
Uses Detection and determination of Ni and its separation from Co and many other metals. Forms a scarlet red ppt with Ni even in dil solutions. Separation of Pd from Sn, Au, Rh, and Ir, also to detect Bi with which it forms a bright yellow color and ppt.
Application Dimethylglyoxime is a chelate ligand that can be used as an antimicrobial agent. The compound binds to metals, such as iron and copper, which are found in wastewater and industrial effluents. It can also chelate metal ions that are present in the water supply. This property makes it an effective agent for removing heavy metals from water. Dimethylglyoxime has been shown to react with various metal ions by means of Langmuir adsorption isotherms and fluorescence spectrometry. When this reaction occurs, the compound forms a complex with the metal ion. The model system is a solution of it with sodium citrate and tetramethylammonium chloride (TMA). The reaction mechanism involves protonation and deprotonation of the ligand, which occurs when the pH is changed from acidic to basic conditions.
Reactions Nickel cation reacts with dimethylglyoxime forms an insoluble red precipitate of nickel dimethylglyoxime.
Ni2+ + 2C4H8N2O2 → Ni(C4H7N2O2)2↓(red precipitate) + 2H+
Dimethylglyoxime reacts with ferrous sulphate and ammonium hydroxide forms a complex compound of iron and ammonium sulphate and water is formed.
FeSO4 + 2NH4OH + 2C4H8N2O2 → Fe(C4H7N2O2)2 + (NH4)2SO4 + 2H2O
General Description Dimethylglyoxime (DMG) is a complexing ligand. Dimethylglyoxime forms a number of mixed ligand complexes with N-acetylglycine with metals such as VO(IV), Ni(II), Zn(II), Pd(II), Cd(II) and Pb(II). It is a useful reagent for the spectrophotometric determination of Co(II), Fe(II), Ni(II), Pd(II) and Re(VII).
Safety Profile Poison by ingestion. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
Purification Methods Crystallise it from EtOH (10mL/g) or aqueous EtOH. [Beilstein 1 III 3105.] TOXIC.