CCl2O - CARBONYL DICHLORIDE

Properties of carbonyl dichloride:

Phosgene. It is colorless gas with an unpleasant odor, heavier than air. Fully hydrolyzed in moist air and in water, decompose by acids and alkalis. It reacts with ammonium hydroxide and metal oxides. It is aprotic solvent of covalent inorganic substances.


Molar mass g/mol 98.92
Density g/cm3 1.436(liquid)
Melting point °C -118.8
Boiling point °C 7.56

Methods for preparation of carbonyl dichloride:

CO + Cl2 = CCl2O (125-150° C, catalyst C/Pt).

2CCl4 + O2 = 2CCl2O + 2Cl2 (250° C, catalyst Ni).

CS2 + 3Cl2O = CCl2O + 2SCl2O, CS2 + 3SO3 = CSO + 4SO2 (normal temp.).


Chemical reactions with carbonyl dichloride:

CCl2O + 2H2O(cold) = H2CO3 + 2HCl,

CCl2O + H2O(vapor) = CO2 + 2HCl (normal temp.).

CCl2O + H2O = CO2↑ + 2HCl (in diluted HCl).

CCl2O + 4NaOH = Na2CO3 + 2NaCl + 2H2O.

CCl2O + 4(NH3 • H2O) = 2NH4Cl + C(NH2)2O(carbamide) + 4H2O.

3CCl2O + Al2O3 = 2AlCl3 + 3CO2 (above 350° C).

CCl2O + 2NaF = COF2 + 2NaCl (in an acetonitrile).


 

Did you know?

Our tooth enamel is also the most mineralized chemical in our body, and is made up of hydroxyapatite.