D134651

Dimethoxymethane

ReagentPlus^®, 99%

• Synonyme(s) : Formaldehyde dimethyl acetal, Methylal
• Formule linéaire : CH₂(OCH₃)₂
• Numéro CAS: 109-87-5
• Poids moléculaire : 76.09
• Numéro Beilstein : 1697025
• Numéro CE : 203-714-2
• Numéro MDL: MFCD00008495
• Code UNSPSC : 12352100
• ID de substance PubChem : 24893265
• Nomenclature NACRES : NA.21

Propriétés

• Densité de vapeur: 2.6 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 6.38 psi ( 20 °C)
• Gamme de produits: ReagentPlus^®
• Pureté: 99%
• Forme: liquid
• Température d'inflammation spontanée: 459 °F
• Limite d'explosivité: 17.6 %
• Indice de réfraction: n20/D 1.354 (lit.)
• Point d'ébullition: 41-42 °C (lit.)
• Pf: −105 °C (lit.)
• Densité: 0.86 g/mL at 25 °C (lit.)
• Chaîne SMILES: COCOC
• InChI: 1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3
• Clé InChI: NKDDWNXOKDWJAK-UHFFFAOYSA-N

Description

Description générale

Dimethoxymethane (DMM, methylal) is a biodegradable dimethyl acetal. It can be synthesized by acid catalyzed condensation of formaldehyde with methanol. It is amphiphilic in nature with low viscosity, surface tension and boiling point. It is a flammable, highly volatile solvent with good dissolving power. DMM is considered as a potential alternative fuel and fuel additive due to its high oxygen content and its ability to enhance the combustion characteristics of diesel and petrol. Its thermal diffusivity has been determined by photoacoustic method. Analysis of the molecular structure of DMM by electron diffraction technique shows that it has C₂ symmetry with a gauche-gauche conformation.

Application

Dimethoxymethane (Formaldehyde dimethyl acetal) may be used in the synthesis of methoxymethyl (MOM) ethers. It may also be used as an external cross-linker to form microporous polymers.

Informations légales

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS02
• Mention d'avertissement: Danger
• Mentions de danger: H225
• Conseils de prudence: P210 - P233 - P240 - P241 - P242 - P243
• Classification des risques: Flam. Liq. 2
• Risques supp: EUH019
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): -0.4 °F - closed cup
• Point d'éclair (°C): -18 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves