CCl4 - CARBON TETRACHLORIDE

Properties of carbon tetrachloride:

It is colorless heavy low-boiling non-flammable liquid. Thermally unstable. Practically immiscible with water. Chemically passive, decomposes only by concentrated alkalis. It is non-polar aprotic solvent.


Molar mass g/mol 153.82
Density g/cm3 1.594
Melting point °C -22.96
Boiling point °C 76.75

Methods for preparation of carbon tetrachloride:

CaC2 + 5Cl2 = CaCl2 + 2CCl4 (above 250◦ C).

CS2 + 3Cl2 = CCl4 + S2Cl2 (catalyst MnCl2/AlCl3).


Chemical reactions with carbon tetrachloride:

CCl4 = C + 2Cl2 (450-600° C).

CCl4 + 3H2O = H2CO3 + 4HCl (normal temp., catalyst Fe).

CCl4 + 6NaOH(conc.) = Na2CO3 + 4NaCl + 3H2O (boiling).

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

CCl4 + 2H2Se = CSe2 + 4HCl (500° C).

CCl4 + 2HF(liquid) = CCl2F2 + 2HCl↑,

3CCl4 + 3SbF3 = 3CCl2F2 + 2SbCl3 (in liquid HF).

CCl4 + 4AgF = CF4 + 4AgCl (150-300° C).

3CCl4 + 4AlE3 = 3CE4 + 4AlCl3 (180-250° C, E = Br, I).


 

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Natural gas has no odour. The smell is added artificially so that leaks can be detected.