Dimethylglyoxime
Dimethylglyoxime
CAS: 95-45-4
Molecular Formula: C4H8N2O2
Dimethylglyoxime - Names and Identifiers
| Name | Dimethylglyoxime |
| Synonyms | METHYL GLOXIME DIACETYLDIOXIME Diacetyl dioxime Dimethylglyoxime ETCHANT INDICATOR DIMETHYLGLYOXIME PWD 2,3-BUTENEDIONDIOXIME 2,3-DIISONITROSOBUTANE 2,3-BUTANEDIONE DIOXIME 2,3-Butanedione dioxime DIMETHYLGLYOXIME ALCOHOLIC (2E,3E)-2,3-Butanedione dioxime Diacetyl oxime test solution(ChP) N-hydroxy-3-nitrosobut-2-en-2-amine 2,3-BUTANEDIONEDIOXIME DISODIUM SALT (2Z,3Z)-N,N'-dihydroxybutane-2,3-diimine (2Z,3E)-N,N'-dihydroxybutane-2,3-diimine DIMETHYLGLYOXIME, REAGENT (ACS)DIMETHYLGLYOXIME, REAGENT (ACS)DIMETHYLGLYOXIME, REAGENT (ACS) |
| CAS | 95-45-4 |
| EINECS | 202-420-1 |
| InChI | InChI=1/C4H8N2O2/c1-3(5-7)4(2)6-8/h7-8H,1-2H3/b5-3-,6-4+ |
| InChIKey | JGUQDUKBUKFFRO-GGWOSOGESA-N |
Dimethylglyoxime - Physico-chemical Properties
| Molecular Formula | C4H8N2O2 |
| Molar Mass | 116.12 |
| Density | 1.2829 (rough estimate) |
| Melting Point | 240-241°C(lit.) |
| Boling Point | 217.15°C (rough estimate) |
| Flash Point | 158.376°C |
| Water Solubility | INSOLUBLE |
| Solubility | Soluble in alcohol, acetone, ether |
| Vapor Presure | 0.001mmHg at 25°C |
| Appearance | White crystal |
| Color | White to off-white |
| Odor | Odorless |
| Merck | 14,3246 |
| BRN | 506731 |
| pKa | pK1:10.60 (25°C) |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.4880 (estimate) |
| MDL | MFCD00002117 |
| Physical and Chemical Properties | White crystal. 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 reagents and redox indicators and chromatographic analysis reagents |
Dimethylglyoxime - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R25 - Toxic if swallowed R11 - Highly Flammable |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2926 6.1(4.1) / PGIII |
| WGK Germany | 3 |
| RTECS | EK2975000 |
| FLUKA BRAND F CODES | 10 |
| TSCA | Yes |
| HS Code | 29280090 |
| Hazard Note | Harmful |
| Packing Group | III |
Dimethylglyoxime - Introduction
Soluble in ethanol, ether, acetone and pyridine, almost insoluble in water. Minimum lethal dose (rat, oral) 250mg/kg.
Last Update：2022-10-16 17:30:20
Dimethylglyoxime - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| purpose | used as analytical reagent, redox indicator and chromatographic reagent assay and determination of nickel; separation of nickel from cobalt and other metals, palladium from tin, gold, rhenium, Iridium, etc.; Cyanide, nickel, palladium, cobalt, iron (II), rhenium (VII) photometric determination of |
| production method | is derived from the reaction of butanedione monoxime with hydroxylamine-sodium sulfonate. The butanedione oxime is added to the hydroxylamine-sodium sulfonate solution, heated to 70 ° C. And kept warm for several hours to precipitate the butanedione oxime crystals. After cooling, the crystals are filtered immediately and washed with ice water until no more sulfate is contained, that's right. Hydroxylamine-sodium sulfonate can be prepared by mixing sodium nitrite with crushed ice, adding a suspension of sodium bisulfite and water while stirring, and then adding glacial acetic acid from the liquid surface under stirring, then, concentrated hydrochloric acid and crushed ice were added to keep the reaction solution below 0 ° C., and the reaction was acidic by Congo red paper test, and the insoluble precipitate was removed by filtration to obtain hydroxylamine-sodium sulfonate solution. |
Last Update：2024-04-09 21:32:09
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