Name: Polyhalogen Compounds - I
Uploaded: 2019-07-19
Duration: 6 min 52 s
Description: There are several polyhalogen compounds such as dichloromethane, carbon tetrachloride and DDT that have industrial applications. Let’s study their properties!

Question

Give the uses of freon 12, DDT, carbon tetrachloride, and iodoform.

Accepted Answer

Uses of Freon -12 :- Freon- $12$ (dichlorodifluoromethane, ${CF}_{2} {Cl}_{2}$ ) is commonly known as $CFC$ . It is used as a refrigerant in refrigerators and air conditioners. It is also used in aerosol spray propellants such as body sprays, hair sprays, etc. However, it damages the ozone layer. Hence, its manufacture was banned in the United States and many other countries in $1994$ .

Uses of DDT :- $DDT$ ( $p, p$ -dichlorodiphenyltrichloroethane) is one of the best-known insecticides. It is very effective against mosquitoes and lice. But due its harmful effects, it was banned in the United States in $1973$ .

Uses of carbontetrachloride ${CCl}_{4}$
(i) It is used for manufacturing refrigerants and propellants for aerosol cans.
(ii) It is used as feedstock in the synthesis of chlorofluorocarbons and other chemicals.
(iii) It is used as a solvent in the manufacture of pharmaceutical products.
(iv) Until the mid $1960$ ’s, carbon tetrachloride was widely used as a cleaning fluid, a degreasing agent in industries, a spot reamer in homes, and a fire extinguisher.

Uses of iodoform ( ${CHI}_{3}$ ) :- Iodoform was used earlier as an antiseptic, but now it has been replaced by other formulations-containing iodine-due to its objectionable smell. The antiseptic property of iodoform is only due to the liberation of free iodine when it comes in contact with the skin.

Give the uses of freon 12, DDT, carbon tetrachloride, and iodoform.

Important Questions on Haloalkanes and Haloarenes

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