CAS 75-09-2 Dichloromethane (DCM or methylene chloride) is a moderately polar aprotic solvent. It is neither completely polar like water nor completely nonpolar like hexane. It is commonly used in organic synthesis and extraction.
Dichloromethane (methylene chloride) is a popular industrial solvent. It is a transparent, easily mobile and volatile liquid with a sweet smell characteristic of halogen derivatives. It was first synthesized in 1840 by keeping a mixture of chlorine and methyl chloride in the light.
Dichloromethane is also called methylene chloride, chloromethyl, methylene chloride, DCM.
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Key properties of DCM solvent
| Chemical Name | Dichloromethane DCM |
| CAS Number | 75-09-2 |
| Molecular Formula | CH₂Cl₂ |
| Molecular Weight | 84.93 g/mol |
| Appearance | Colorless liquid |
| Odor | Mild, sweet odor |
| Boiling Point | ~39.6°C |
| Melting Point | ~ -96.7°C |
| Density | ~1.33 g/cm³ (20°C) |
| Solubility in Water | Slightly soluble (~13 g/L) |
| Polarity | Moderately polar |
| Dipole Moment | ~1.60 D |
| Dielectric Constant | ~8.9 (20°C) |
| Flash Point | Not applicable (non-flammable under normal conditions) |
| Vapor Pressure | ~47 kPa (20°C) |
| Evaporation Rate | Fast |
| Chemical Type | Chlorinated solvent |
Comparison with Polar and Nonpolar Solvents
| Solvent | Polarity | Typical Use |
|---|---|---|
| Water | Highly polar | Aqueous reactions |
| DMF | Highly polar | Polymer synthesis |
| Dichloromethane | Moderately polar | Extraction, coatings |
| Hexane | Nonpolar | Oils, hydrocarbons |
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| Packaging Type | Net Weight |
|---|---|
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| IBC Tank | 1250 kg |
| ISO Tank | Bulk shipment |
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