Dimethoxymethane

CAS Number
109-87-5
EC Number
203-714-2
Chemical Formula
C3H8O2
Molecular Weight
76.09 g/mol

Description

Dimethoxymethane (CAS 109-87-5), commercially known as Methylal, is a fast-evaporating solvent used across pharmaceutical manufacturing, specialty chemical synthesis, and flavoring applications. Its low boiling point and clean evaporation profile make it a preferred choice where residue-free solvent performance is a procurement priority for industrial manufacturers and labs.

In pharmaceutical manufacturing, Methylal functions as a reaction solvent and extraction medium where controlled evaporation and low residual contamination are critical to API quality. Flavor formulators incorporate it as a carrier solvent and flavoring agent, particularly in applications requiring rapid volatilization of aromatic compounds in various mixtures.

In specialty chemical synthesis, it acts as a formaldehyde equivalent and catalyst precursor for producing polyoxymethylene dimethyl ethers and other acetal-based intermediates. Industrial cleaning and aerosol formulations also use it as a co-solvent to improve solvency and reduce VOC content in finished products across many different sectors.

Dimethoxymethane is supplied as a clear liquid in drum and IBC quantities, with bulk tanker options available for larger industrial volumes and high-capacity manufacturing needs. Food-grade and pharmaceutical-grade specifications are available to meet FCC and USP compliance requirements. Technical-grade material is standard for industrial solvent use.

Other Names (Synonyms)

methylene glycol dimethylether|Methylene dimethyl ether|Methylal|Methoxymethyl methyl ether|Formaldehyde dimethylacetal|dimethyl formal|bis(methyloxy)methane|bis(methoxy)methane

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point -105 °C
Boiling Point 41.6 °C @ Press: 760 Torr
Density 0.8593 g/cm³ @ Temp: 20 °C
Flash Point -18 °C
Appearance Methylal is a colorless liquid with a pungent odor.
Color Clear colorless
Odor Mild, ethereal; chloroform-like.
Form Liquid
Water Solubility 32.3 g/100 mL (16 ºC)
Vapor Pressure 6.38 psi ( 20 °C)
Refractive Index n 20/D 1.354
pH pH (12.5vol % , 25℃) : 4.5~6.6
Log P 0

Documentation

Safety & Handling Learn More

Danger
GHS02· Flammable GHS07· Irritant

Hazard Statements

H225 Highly Flammable liquid and vapor
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H336 May cause drowsiness or dizziness

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Trade & Regulatory

HS Code 29110000
UN Number 1234
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 1
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