CID 83518 C8H14N4NiO4 CID 83518 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety. Eichrom’s Nickel Resin is based on the traditional dimethylglyoxime (DMG) precipitation chemistry for nickel analysis, but greatly simplifies the procedure. The Nickel Resin contains the DMG inside the pores of a polymethacrylate resin. The nickel-DMG precipitate occurs on the resin, where it is held and readily separated from the supernatant. Nickel salts and their solutions will irritate the eyes upon contact. Dust from solid nickel salts in harmful, and the compounds are assumed to be poisonous if ingested. Pour the waste into the waste bottle. If there is not a date on the waste bottle fill out the date. Return the materials to the cart in the demonstration library room. The nickel-DMG precipitate occurs on the resin, where it is held and readily separated from aqueous samples. Figure 1 shows the chemical structure of DMG and the nickel-DMG complex. Applying the DMG chemistry in a column or cartridge format simplifies the separation procedure and allow simultaneous preparation of multiple samples. Apr 03, 2018 DMG stands for Dimethylglyoxime. It forms a complex with Nickel which is insoluble and precipitates. Thus, determination of Ni and its quantification can be done by using DMG. DMG can also be used for determination of Bi and Pd. Gravimetric analys. Jan 09, 2008 nickel dimethylglyoxime? I've done an experiment on determining trace nickel in an unknown solution using DMG.in the experiment,why was oxidizing agent being added?and by adding oxidizing agent does nickel being oxidized?
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ECHA InfoCard | 100.002.201 |
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Properties | |
C4H8N2O2 | |
Molar mass | 116.120 g·mol−1 |
Appearance | White/Off White Powder |
Density | 1.37 g/cm3 |
Melting point | 240 to 241 °C (464 to 466 °F; 513 to 514 K) |
Boiling point | decomposes |
low | |
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Main hazards | Toxic, Skin/Eye Irritant |
Safety data sheet | External MSDS |
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GHS Signal word | Danger |
H228, H301 | |
P210, P240, P241, P264, P270, P280, P301+310, P321, P330, P370+378, P405, P501 | |
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Hydroxylamine salicylaldoxime | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
verify (what is ?) | |
Infobox references |
Dimethylglyoxime is a chemical compound described by the formula CH3C(NOH)C(NOH)CH3. Its abbreviation is dmgH2 for neutral form, and dmgH for anionic form, where H stands for hydrogen. This colourless solid is the dioxime derivative of the diketone butane-2,3-dione (also known as diacetyl). DmgH2 is used in the analysis of palladium or nickel. Its coordination complexes are of theoretical interest as models for enzymes and as catalysts. Many related ligands can be prepared from other diketones, e.g. benzil.
Preparation[edit]
![Nickel dmg complex structure Nickel dmg complex structure](/uploads/1/2/5/0/125076697/322616678.gif)
Dimethylglyoxime can be prepared from butanone first by reaction with ethyl nitrite to give biacetyl monoxime. The second oxime is installed using sodium hydroxylamine monosulfonate:[1]
Complexes[edit]
Dimethylglyoxime is used to detect and quantify nickel, which forms the bright red complex nickel bis(dimethylglyoximate) (Ni(dmgH)2). The reaction was discovered by L. A. Chugaev in 1905.[2]
Cobalt complexes have also received much attention. In chloro(pyridine)cobaloxime[3] the macrocycle [dmgH]22− mimics the macrocyclic ligand found in vitamin B12.
Structure of chloro(pyridine)cobaloxime.
References[edit]
Nickel Dmg Structure Formula
- ^Semon, W. L.; Damerell, V. R. (1930). 'Dimethylglyoxime'. Organic Syntheses. 10: 22. doi:10.15227/orgsyn.010.0022.CS1 maint: multiple names: authors list (link)
- ^Lev Tschugaeff (1905). 'Über ein neues, empfindliches Reagens auf Nickel'. Berichte der Deutschen Chemischen Gesellschaft. 38 (3): 2520–2522. doi:10.1002/cber.19050380317.
- ^Girolami, G.. S.; Rauchfuss, T.B.; Angelici, R. J. (1999). Synthesis and Technique in Inorganic Chemistry: A Laboratory Manual (3rd ed.). pp. 213–215.
Nickel Dmg Complex Structure
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