Search results
Results from the WOW.Com Content Network
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]
The most important is dichloromethane, which is mainly used as a solvent. Chloromethane is a precursor to chlorosilanes and silicones. Historically significant (as an anaesthetic), but smaller in scale is chloroform, mainly a precursor to chlorodifluoromethane (CHClF 2) and tetrafluoroethene which is used in the manufacture of Teflon. [1]
This method, however, also produces more highly chlorinated compounds such as dichloromethane, chloroform, and carbon tetrachloride. For this reason, methane chlorination is usually only practiced when these other products are also desired. This chlorination method also cogenerates hydrogen chloride, which poses a disposal problem. [5]
The output of this process is a mixture of the four chloromethanes: chloromethane, methylene chloride (dichloromethane), trichloromethane (chloroform), and tetrachloromethane (carbon tetrachloride). These can then be separated by distillation. [11]
The hydrocarbons used are sometimes made by hydrogenation from naphtha. The lipophilic liquids dissolve fat-soluble lubricants or oils. Some products also contain polar solvents such as ethanol, [7] methanol, [8] isopropanol, and acetone in order to dissolve non-lipophilic substances. Many formulations are incompatible with various materials ...
Three men still remain on federal death row after President Joe Biden issued sweeping commutations Monday to the sentences of 37 other prisoners who were awaiting execution.. Biden's decision is ...
Shelf-staple food items like spices, nuts, coffee and spice blends can be packed in carry-on luggage, while sauces, marinades and oils can be brought home in checked luggage.
Please find below supplementary chemical data about dichloromethane. MSDS sheets. The handling of this chemical may incur notable safety precautions.