English name: 1,3-Dimethyl-2-imidazolidinone

Abbreviations: DMI, DMEU

CAS：80‑73‑9

Alias: N, N '- dimethylethyleneurea

EINECS：201‑304‑8

Molecular formula: C5H10N2O

Molecular weight: 114.15

HS code: 2933399090 

Physical and chemical properties

Appearance: Colorless, transparent, low viscosity liquid with a weak odor of fatty amines

Melting point: 8.2 ℃

Boiling point: 224-226 ℃

Density (20 ℃): 1.055-1.059 g/cm ³

Refractive index n ₂₀/D: 1.472-1.474

Flash point: 120 ℃

Viscosity (25 ℃): 1.94 mPa · s

Solubility: completely miscible with water, ethanol, methanol, dichloromethane, DMF, etc; Insoluble in petroleum ether and cyclohexane.

Main use

Organic synthetic solvents: solvents used in pharmaceutical and pesticide fine chemical reactions, for nucleophilic substitution, condensation, metal organic reactions, reducing by-products, and can be recycled and reused.

Polymer industry: polyamide, polyimide, special resin polymerization solvents; Used for the production of film materials and liquid crystal materials.

Electronic materials: components of photolithography stripping solution, special cleaning agents for electronic components, improving the bonding performance of special engineering plastics.

Other: dye ink additives, formaldehyde capture agents; Used as a transdermal promoter in pharmaceutical formulations.

Quality indicators (industrial grade)

Appearance: Colorless clear liquid

Assay(GC): ≥99.0%

Moisture(KF): ≤0.10%

Refractive Index n20/D: 1.472‑1.474

Density(20℃): 1.055‑1.059 g/cm³

Free amine: ≤0.10%

Packaging

Industrial packaging: 200L galvanized iron drum/inner coated plastic iron drum, net weight 200kg/drum;

Small packaging: 25kg plastic drum;

Sealed barrel mouth, leak proof, suitable for sea and land transportation.

Storage and Transportation 

Sealed storage in a cool and ventilated warehouse, with a storage temperature of 2-30 ℃, away from heat sources, open flames, and direct sunlight. Store separately from strong oxidants and strong acids.

Not classified as easily producible drugs, easily producible explosives, or dual-use items; Flammable liquid, operated as a regular chemical, not a high-risk UN hazardous material.

During transportation, prevent exposure to sunlight and rain, load and unload gently to avoid impact damage.

Safety reminder

Keep the operating environment ventilated; Wear goggles and chemical resistant gloves to avoid skin contact and inhalation of vapors; Once it splashes into the eyes, immediately rinse with plenty of water and seek medical attention promptly.