47676

Formaldehyde dimethyl acetal

absolute, over molecular sieve (H₂O ≤0.01%), ≥99.0% (GC)

• Synonym(s): Dimethoxymethane, Methylal
• Linear Formula: CH₂(OCH₃)₂
• CAS Number: 109-87-5
• Molecular Weight: 76.09
• Beilstein: 1697025
• EC Number: 203-714-2
• MDL number: MFCD00008495
• UNSPSC Code: 12352100
• PubChem Substance ID: 57651079
• NACRES: NA.22

Properties

• grade: absolute
• Quality Level: 100
• Assay: ≥99.0% (GC)
• quality: over molecular sieve (H₂O ≤0.01%)
• refractive index: n20/D 1.354
• density: 0.860 g/mL at 20 °C (lit.)
• functional group: acetal; ether
• SMILES string: COCOC
• InChI: 1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3
• InChI key: NKDDWNXOKDWJAK-UHFFFAOYSA-N

Description

General description

Formaldehyde dimethyl acetal (FDA, FDMA, FADMA, dimethoxymethane, DMM, methylal) is a biodegradable[1] dimethyl acetal. It has been synthesized by condensing formaldehyde with methanol in the presence of acid catalyst. It is amphiphilic in nature with low viscosity, surface tension and boiling point. It is a flammable, highly volatile solvent with excellent dissolving power.[1] It is reported to form trimethylorthoformate by anodic methoxylation in basic methanol.[2]

Application

Formaldehyde dimethyl acetal may be used in the following studies:

• Synthesis of methoxymethyl (MOM) ethers.[3][4][5]
• As an external cross-linker to form microporous polymers.[6]
• Dehydration of biological samples for scanning electron microscopy (SEM).[7]

Safety Information

• Pictograms: GHS02
• Signal Word: Danger
• Hazard Statements: H225
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 2
• Supplementary 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: dust mask type N95 (US), Eyeshields, Gloves