1,3-Dimethyl-2-imidazolidinone , >99.0%(GC) , 80-73-9

Synonym(s):
N,N′-Dimethylethyleneurea;1,3-Dimethyl-2-imidazolidinone;Dimethylethylene urea, DMI, DMEU;DMEU;DMI

CAS NO.：80-73-9

Empirical Formula: C5H10N2O

Molecular Weight: 114.15

MDL number: MFCD00003188

EINECS: 201-304-8

PRODUCT 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.)
• Flash point: 220 °F
• storage temp.: Store at +5°C to +30°C.
• solubility: toluene: soluble(lit.)
• form: Liquid
• pka: -0.65±0.20(Predicted)
• color: Clear
• explosive limit: 1.3-8.4%(V)
• Water Solubility: freely soluble
• Sensitive: Hygroscopic
• Merck: 14,3249
• 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)

Description and Uses

DMI, a high purity aprotic solvent, is composed of nitrogen containing five membered ring compound and widely recognized as an epoch making solvent. It is a colorless, transparent, high polar solvent with high thermal and chemical stability and non-corrosiveness. The material has a high boiling point of 222° C, a high flash point of 120° C (open method) / 95° C (close method), and a low melting point of 7.5° C.

1,3-Dimethyl-2-imidazolidinone may be used:

• As substitute solvent for hexamethylphosphoric triamide (HMPA) in the synthesis of 1,2-bis(trimethylsilyl)benzene.
• As solvent during the α-regioselective prenylation of imine.
• As component of mobile phase for the size-exclusion chromatographic analysis of cellulose.

Safety

• Symbol(GHS): GHS05,GHS07,GHS08
• Signal word: Danger
• Hazard statements: H302-H318-H361fd
• Precautionary statements: P201-P202-P280-P301+P312-P305+P351+P338-P308+P313
• 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
• Limited Quantities: 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)