DIMETHOXYMETHANE REAGENTPLUS 99% (C005B-007524)

General description

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.

Legal Information

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

Molecular Weight: 76.09. Empirical Formula: C₃H₈O₂. linearFormula: CH₂(OCH₃)₂. vapor density: 2.6 (vs air). Quality Level: 200. vapor pressure: 6.38 psi ( 20 °C). product line: ReagentPlus^®. . Assay: 99%. form: liquid. autoignition temp.: 459 . °F. expl. lim.: 17.6 . %. refractive index: n20/D 1.354 (lit.). bp: 41-42 . °C (lit.). mp: −. 105 . °C (lit.). density: 0.86 . g/mL . at 25 . °C (lit.). SMILES string: COCOC. InChI: 1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3. InChI key: NKDDWNXOKDWJAK-UHFFFAOYSA-N. Pictograms: GHS02. Signal Word: Danger. Hazard Statements: H225. Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243. Hazard Classifications: Flam. Liq. 2. Supp Hazards: EUH019. Storage Class Code: 3 - Flammable liquids. WGK: WGK 1. Flash Point(F): -0.4 °F - closed cup. Flash Point(C): -18 °C - closed cup. Personal Protective Equipment: Eyeshields, Faceshields, Gloves.