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Dichloromethane (DCM, methylene chloride, or methylene bichloride) is an organochlorine compound with the formula C H 2 Cl 2. This colorless, volatile liquid with a chloroform-like, sweet odor is widely used as a solvent. Although it is not miscible with water, it is slightly polar, and miscible with many organic solvents. [12]
A methylene group is any part of a molecule that consists of two hydrogen atoms bound to a carbon atom, which is connected to the remainder of the molecule by two single bonds. [1] The group may be represented as −CH 2 − or >CH 2 , where the '>' denotes the two bonds.
Solvent bonding (also called solvent welding) is not a method of adhesive bonding (the final result does not rely on the adhesion of another substance [adhesive] and its cohesion between two substrates), but rather a method of fusing two thermoplastic plastics.
A methylene bridge can also act as a bidentate ligand joining two metals in a coordination compound, such as titanium and aluminum in Tebbe's reagent. [1] A methylene bridge is often called a methylene group or simply methylene, as in "methylene chloride" (dichloromethane CH 2 Cl 2).
Dichloromethane, also called methylene chloride, was once a popular solvent, but its use has been declining because of health concerns. [1] Traditional solvent paint strippers penetrate the layers of paint and break the bond between the paint and the object by swelling the paint. [2]
Chloromethane (originally called "chlorohydrate of methylene") was among the earliest organochlorine compounds to be discovered when it was synthesized by French chemists Jean-Baptiste Dumas and Eugène-Melchior Péligot in 1835 by boiling a mixture of methanol, sulfuric acid, and sodium chloride. [15]
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
log 10 of Dichloromethane vapor pressure. Uses formula: log e P m m H g = {\displaystyle \scriptstyle \log _{e}P_{mmHg}=} log e ( 760 101.325 ) − 10.08632 log e ( T + 273.15 ) − 6030.610 T + 273.15 + 80.87786 + 9.812512 × 10 − 6 ( T + 273.15 ) 2 {\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-10.08632\log _{e ...