295299

Dimethyl ether

≥99%

• Synonyme(s) : DME, Methyl ether
• Formule linéaire : (CH₃)₂O
• Numéro CAS: 115-10-6
• Poids moléculaire : 46.07
• Numéro Beilstein : 1730743
• Numéro CE : 204-065-8
• Numéro MDL: MFCD00008494
• Code UNSPSC : 12142100
• ID de substance PubChem : 24857771
• Nomenclature NACRES : NA.22

Propriétés

• Densité de vapeur: 1.62 (vs air)
• Pression de vapeur: >760 mmHg ( 25 °C)
• Pureté: ≥99%
• Température d'inflammation spontanée: 662 °F
• Limite d'explosivité: 27 %
• Point d'ébullition: −24.8 °C (lit.)
• Pf: −141 °C (lit.)
• Chaîne SMILES: COC
• InChI: 1S/C2H6O/c1-3-2/h1-2H3
• Clé InChI: LCGLNKUTAGEVQW-UHFFFAOYSA-N

Description

Description générale

Dimethyl ether (DME) is the simplest aliphatic ether used as a reactant as well as a solvent in organic synthesis. It is used as a precursor for the preparation of important useful organic compounds. DME is also used as an aerosol propellant.

Application

DME can be used as precursor for the production dimethyl sulfate by treatment with sulfur trioxide. Dimethyl sulfate is employed as a versatile methylating agent in chemical synthesis. It is also used as a starting material for preparation of dimethyl sulfide, acetic acid, unsaturated and saturated hydrocarbons, and formadehyde.

Dimethyl ether (DME) can be used as a precursor to synthesize methyl acetate, oligomeric oxymethylene ethers (OMEs), polyoxymethylene dimethyl ethers (DMMx) and light olefins.

Conditionnement

Supplied in a Sure/Pac^™ cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve.

Compatible with the following:

• Aldrich^® Sure/Pac^™ station for liquefied gases Z566446
• PTFE Sealing tape Z104388 or Z221880
• Brass hose adapter Z146811
• Aldrich^® mini gas regulator Z513539

Informations légales

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

Informations sur la sécurité

• Pictogrammes: GHS02,GHS04
• Mention d'avertissement: Danger
• Mentions de danger: H220,H280
• Conseils de prudence: P210 - P377 - P381 - P410 + P403
• Classification des risques: Flam. Gas 1A - Press. Gas Liquefied gas
• Code de la classe de stockage: 2A - Gases
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): -41.8 °F - closed cup
• Point d'éclair (°C): -41 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)