Products Description of DMI CAS#80-73-9
1,3-Dimethyl-2-imidazolinone, commonly referred to as dimethylethylene urea (DMI), is a high-boiling polar solvent. It is characterized by a high flash point, low melting point, extremely low toxicity, negligible environmental footprint, and superior solvency. Additionally, this compound delivers exceptional stability and exhibits strong resistance to strong acids, strong alkalis, water, light and oxygen.

1,3-Dimethyl-2-imidazolidinone Chemical Properties
| 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 |
Product Application of DMI CAS#80-73-9
1,3-Dimethyl-2-imidazolinone functions as a solvent for numerous organic synthesis reactions. It is also employed in research investigating the photochemical generation of stable functionalized hydrogenated silane biradical transition-metal complexes derived from arylsilanes. As an inert dipolar solvent, it is commonly adopted as a safer substitute for HMPA, a solvent with carcinogenic properties.
Classified as a ketone-based organic compound, 1,3-Dimethyl-2-imidazolinone acts as both an organic solvent and a chemical intermediate. It finds broad application across pharmaceuticals, agrochemicals, dyestuffs, liquid crystal materials and other associated sectors.






