(1, 3-Dimethyl-2-imidazolidinone
1,3-Dimethyl-2-imidazolidinone
CAS: 80-73-9
Molecular Formula: C5H10N2O
(1, 3-Dimethyl-2-imidazolidinone - Names and Identifiers
| Name | 1,3-Dimethyl-2-imidazolidinone |
| Synonyms | DMI DMEU Rhonite 1 Karbomos TsEM DIMETHYLETHYLENE UREA NN-Dimethylethyleneurea DiMethyl-2-iMidazolidin N,N-Dimethylethyleneurea N,N'-Dimethylethyleneurea 1,3-dimethyl imidazolinone 1,3-Dimethylimidazolidinone 1,3-dimethyl-2-imidazolinone 1,3-Dimethyl-2-imidazolidone 1,3-Dimethyl-2-imidazolidinone 1,3-dimethylimidazolidin-2-one N,N'-Dimethyl-2-imidazolidinone (1, 3-Dimethyl-2-imidazolidinone 1,3-DIMETHYL-2-IMIDAZOLIDINONE FOR SYNTH Tetrahydro-2H-imidazol-2-one, 1,3-Dimethyl-2-oxoimidazolidine |
| CAS | 80-73-9 |
| EINECS | 201-304-8 |
| InChI | InChI=1/C5H10N2O/c1-6-3-4-7(2)5(6)8/h3-4H2,1-2H3 |
| InChIKey | CYSGHNMQYZDMIA-UHFFFAOYSA-N |
(1, 3-Dimethyl-2-imidazolidinone - Physico-chemical Properties
| Molecular Formula | C5H10N2O |
| Molar Mass | 114.15 |
| Density | 1.056 g/mL at 25 °C (lit.) |
| Melting Point | 8.2 °C |
| Boling Point | 224-226 °C (lit.) |
| Flash Point | 220°F |
| Water Solubility | freely soluble |
| Solubility | toluene: soluble(lit.) |
| Vapor Presure | <1 hPa (20 °C) |
| Appearance | Clear, Colorless Liquid |
| Color | Clear |
| Merck | 14,3249 |
| BRN | 108808 |
| pKa | -0.65±0.20(Predicted) |
| Storage Condition | Store at +5°C to +30°C. |
| Sensitive | Hygroscopic |
| Explosive Limit | 1.3-8.4%(V) |
| Refractive Index | n20/D 1.472(lit.) |
| MDL | MFCD00003188 |
| Physical and Chemical Properties | Appearance: colorless transparent liquid boiling point: 225.0-225.5 ° C refractive index: 1.4720 |
| Use | Can be used as a highly functional reaction solvent, as a polymer solvent, can also be used to produce high quality polyamide |
(1, 3-Dimethyl-2-imidazolidinone - Risk and Safety
| Risk Codes | R21/22 - Harmful in contact with skin and if swallowed. R38 - Irritating to the skin R41 - Risk of serious damage to eyes R36/38 - Irritating to eyes and skin. R62 - Possible risk of impaired fertility R22 - Harmful if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 2810 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | NJ0660000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 29332990 |
| Hazard Note | Harmful/Irritant |
| Hazard Class | 6.1 |
| Packing Group | Ⅲ |
| Toxicity | LD50 orally in Rabbit: 1261 mg/kg LD50 dermal Rabbit 986 mg/kg |
(1, 3-Dimethyl-2-imidazolidinone - Introduction
It has the unique smell of fatty amines. Viscosity (25 ℃) 1.944cps, DMI can be miscible with organic solvents such as water, ethanol, ether, acetone, chloroform, etc. Insoluble in petroleum ether and cyclohexane. Strong polarity, excellent solubility, acid and alkali resistance.
Last Update：2022-10-16 17:28:58
(1, 3-Dimethyl-2-imidazolidinone - Reference Information
| LogP | -0.3 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | 1, 3-dimethyl-2-imidazolidinone, also known as dimethyl vinyl urea, 3-dimethyl -2-imidazolidinone, is a polar solvent, it has a high boiling point, high flash point, low melting point, very low toxicity, very low pollution and strong solubility, it has a very strong stability, resistant to strong acid, strong alkali, water, light and oxygen. |
| Application | 1, 3-dimethyl-2-imidazolidinone as a ketone organic compound, as an organic solvent and chemical raw material, it is widely used in medicine, pesticides, dyes, liquid crystal materials and other fields. |
| synthesis method | German patent DE 3703389 reports a synthesis method of 1, 3-dimethyl-2-imidazolidinone, with 85% concentration of formic acid as the reaction medium, after adding 2-imidazolinone, 36% formaldehyde was added dropwise at 0 ℃, and the reaction was carried out at room temperature for 1 hour after adding the formaldehyde dropwise, then, the mixture was heated to reflux and reacted at reflux for 8 hours. The formic acid was distilled off, neutralized, and distilled in vacuo to give 1, 3-dimethyl-2-imidazolidinone. This synthesis method requires 85% mass% concentration of formic acid as the reaction medium, and can not be used for less than 85% mass% concentration of formic acid. |
| Use | can be used as highly functional reaction solvent, as solvent of polymer, can also be used for the production of high quality polyamide used as pharmaceutical intermediates, important organic solvents pharmaceutical intermediates, but also important organic solvents. for HPLC detection of cefpirxime. used as formaldehyde capture agent, intermediate of fine chemicals, also used in the preparation of resin and preparation of plasticizer, paint, adhesive, etc. thiadiazole derivative; pharmaceutical intermediates solvents used in a variety of organic synthesis conversion reactions; Used to study the formation of stable functionalized hydrosilane double transition metal complexes from arylsilanes by photochemistry; Dipolar solvents with Proton inertness, often used as a substitute for the carcinogen HMPA |
| production method | Firstly, urea and ethylenediamine are cyclized in ethylene glycol solution to produce 2-imidazolidinone, the 2-imidazolinone then reacts with formaldehyde and formic acid to form 1,3-DMI. |
| autoignition temperature | 305°C |
Last Update：2024-04-09 21:11:58
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