Search results
Results From The WOW.Com Content Network
Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is an organic compound with the chemical formula CH 3 Cl. One of the haloalkanes , it is a colorless, sweet-smelling, flammable gas.
The four common [a] members are fluoromethane, chloromethane, bromomethane and iodomethane. Historical name for this group is methyl halides ; it's still widely used. The compounds of this class are often described as CH 3 X or MeX (X - any halogen, Me - methyl group ).
The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the safety data sheet for this chemical from a reliable source such as SIRI, and follow its directions.
Chloromethane and bromomethane are used to introduce methyl groups in organic synthesis. Chlorodifluoromethane is the main precursor of tetrafluoroethylene , which is the monomeric precursor to Teflon .
It was produced industrially from paraformaldehyde and a mixture of chlorosulfonic acid and sulfuric acid. [3] It is also produced as a byproduct in the Blanc chloromethylation reaction, formed when formaldehyde (the monomer, paraformaldehyde or formalin) and concentrated hydrochloric acid are mixed, and is a known impurity in technical grade chloromethyl methyl ether.
The table is sortable by each of the following refrigerant properties (scroll right or reduce magnification to view more properties): Type/prefix (see legends); ASHRAE number
Structure of the chloromethyl group. In organic chemistry, the chloromethyl group is a functional group that has the chemical formula −CH 2 −Cl.The naming of this group is derived from the methyl group (which has the formula −CH 3), by replacing one hydrogen atom by a chlorine atom.
DCM is produced by treating either chloromethane or methane with chlorine gas at 400–500 °C. At these temperatures, both methane and chloromethane undergo a series of reactions producing progressively more chlorinated products. In this way, an estimated 400,000 tons were produced in the US, Europe, and Japan in 1993. [12] CH 4 + Cl 2 → CH ...