Product Description
DMI (dimethylethylene urea) is a high-stability ketone-type polar aprotic solvent. Combining excellent solubility, extreme chemical inertness and superior safety, it has become an ideal substitute for carcinogenic HMPA and other toxic solvents in fine chemical research and manufacturing.
Product Parameters
| Melting point | 8.2 °C |
| Boiling point | 224-226 °C (lit.) |
| density | 1.056 g/mL at 25 °C (lit.) |
| vapor pressure | <1 hPa (20 °C) |
| refractive index | n20/D 1.472(lit.) |
| Fp | 220 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | toluene: soluble(lit.) |
| pka | -0.65±0.20(Predicted) |
| form | Liquid |
| color | Clear |
| explosive limit | 1.3-8.4%(V) |
| Water Solubility | freely soluble |
| Sensitive | Hygroscopic |
| Merck | 143,249 |
| BRN | 108808 |
| InChIKey | CYSGHNMQYZDMIA-UHFFFAOYSA-N |
| LogP | -0.3 at 25℃ |
| CAS DataBase Reference | 80-73-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Dimethyl-2-imidazolidinone(80-73-9) |
| EPA Substance Registry System | N,N'-Dimethylimidazolidinone (80-73-9) |
Safety Information
| Hazard Codes | Xn,Xi |
| Risk Statements | 21/22-38-41-36/38-62-22 |
| Safety Statements | 26-36-36/37/39-36/37 |
| RIDADR | UN 2810 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | NJ0660000 |
| F | 3 |
| Autoignition Temperature | 305 °C |
| Hazard Note | Harmful/Irritant |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | Ⅲ |
| HS Code | 29332990 |
| Toxicity | LD50 orally in Rabbit: 1261 mg/kg LD50 dermal Rabbit 986 mg/kg |
Application Scenarios
It is widely adopted as an inert reaction medium for various organic synthesis and photochemical research, especially in transition-metal complex and arylsilane reaction studies. Beyond solvent usage, DMI acts as a valuable fine chemical intermediate, extensively applied in pharmaceutical synthesis, pesticide manufacturing, dye formulation and liquid crystal material production.
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