CAS 75-09-2 Dichloromethane (DCM or methylene chloride) is an organic compound with the formula CH2Cl2. This colourless, volatile liquid with a moderately sweet aroma is widely used as a solvent. Although it is not miscible with water, it is miscible with many organic solvents.
DCM Properties
Chemical Formula: CH₂Cl₂
Appearance: Clear, colorless liquid
Odor: Sweet, chloroform-like, perceptible even at low concentrations.
Boiling Point: 39.6°C (103.3°F)
Density: 1.33 g/cm³
Solubility: Miscible with most organic solvents (e.g., ethanol, ether). Very low solubility in water.
Dichloromethane (DCM) Uses
Process solvent:
In the industrial production of pharmaceuticals, agrochemicals, polycarbonate, cellulose triacetate, for the processing of cellulose acetate film & fibres, as extraction solvent in the food and pharmaceutical industry.
Paint and varnish remover:
Main component in paint stripping formulations in industrial installations. (Note: the use of DCM based paint strippers for consumers and professionals has been banned in the EU; only the UK has granted a derogation for trained and certified professionals).
Metal cleaning:
DCM Dichloromethane is used for removing oils, grease and soils from metal parts in closed units, also referred to as vapour degreasing.
Intermediate: apart from the solvent uses, the substance is used as raw material (chemical intermediate) for the production of difluoromethane (HFC 32) that is used in refrigerant blends like R407c and R410a.
Other uses:
In aerosol formulations for consumers, professional and industrial applications, (e.g. cleaning/degreasing products); in adhesives but also in adhesive removers; as co-blowing agent in soft polyurethane foam production; as a heat transfer / cooling fluid; as stripper of photo-resistant coatings in the production of printed circuit boards; and as laboratory solvent.
Dichloromethane (Methylene Chloride) Safety Guide
POISONOUS GAS - Can kill you quickly in closed rooms.
Use outdoors or with strong ventilation - Never use indoors.
Wear gloves, goggles, and a mask - Avoid skin contact and breathing vapors.
If you feel dizzy - Go outside to fresh air immediately.
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