Dichloromethane is a volatile, clear, and colourless liquid with a smell similar to chloroform. It has been an important industrial solvent since the 1940s. Dichloromethane DCM is also commonly referred to as methylene chloride and DCM.
The properties of DCM Dichloromethane you need to know.
- Molecular weight: 84.93 g·mol−1
- Melting point: −96.7 °C
- Viscosity: 0.43 cP (20 °C)
- Solubility in water: 17.5 g/L (25 °C)
- Density: 1.3266 g/cm3
- Boiling point of CH2C12: 39.6 °C
- Flash Point: Non-flammable
- Evaporation Rate: High
- Vapor Pressure: 47.3 kPa @ 20°C
- Dielectric Constant: 9.1
- Biodegradability: Partial
Industrial Chemical Dichloromethane Uses
Dichloromethane is used to strip paint and remove varnish.It has also been used as a flexible urethane blowing agent, in aerosol formulations, as a solvent in producing pharmaceuticals and film coatings, and as an extraction medium (used in the food industry to extract spices, caffeine, and hops).Other uses include degreasing metals, manufacturing electronics and adhesives, processing plastics, and refrigerating.
Hazards
Acute Toxicity: Inhalation of high concentrations of dichloromethane can cause acute irreversible effects on the central nervous system, including impairment of visual, auditory, and psychomotor functions. High-level exposure can be fatal.
Chronic Toxicity: Long-term exposure may affect the central nervous system, leading to symptoms such as headache, dizziness, nausea, and memory loss, and may also cause liver toxicity. The U.S. Environmental Protection Agency (EPA) classifies dichloromethane as a possible human carcinogen.
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