Carbon tetrachloride

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Carbon tetrachloride
Structural formula of carbon tetrachloride
Space-filling model carbon tetrachloride
IUPAC name
Carbon tetrachloride, Tetrachloromethane
Other names
Benziform, Benzinoform, Carbon chloride, Carbon tet, Freon-10, Refrigerant-10, Halon-104, Methane tetrachloride, Methyl tetrachloride, Perchloromethane, Tetraform, Tetrasol
3D model (JSmol)
ECHA InfoCard 100.000.239
EC Number
  • 200-262-8
RTECS number
  • FG4900000
UN number 1846
  • ClC(Cl)(Cl)Cl
Molar mass 153.81 g·mol−1
Appearance colourless liquid
Odor Sweet, chloroform-like odor
Density 1.5867 g cm−3 (liquid)

1.831 g cm−3 at −186 °C (solid)
1.809 g cm−3 at −80 °C (solid)

Melting point −22.92 °C (−9.26 °F; 250.23 K)
Boiling point 76.72 °C (170.10 °F; 349.87 K)
0.097 g/100 mL (0 °C)
0.081 g/100 mL (25 °C)
Solubility soluble in alcohol, ether, chloroform, benzene, naphtha, CS2, formic acid
log P 2.64
Vapor pressure 11.94 kPa at 20 °C
kH 2.76x10−2 atm-cu m/mol
-66.60·10−6 cm3/mol
0 D
0 D
Std enthalpy of
-139.3 kJ/mol
Standard molar
214.42 J/mol K
Specific heat capacity, C 132.6 J/mol K
EU classification Toxic T Dangerous for the Environment (Nature) N
NFPA 704

NFPA 704.svg

R-phrases R23/24/25, R40, R48/23, R59, R52/53
S-phrases (S1/2), S23, S36/37, S45, S59, S61
Flash point <982°C
U.S. Permissible
exposure limit (PEL)
TWA 10 ppm C 25 ppm 200 ppm (5-minute maximum peak in any 4 hours)[1]
Related compounds
Other cations Silicon tetrachloride
Germanium tetrachloride
Tin tetrachloride
Lead tetrachloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Carbon tetrachloride, also known as carbon tet or Freon 10, is a chemical compound. Its chemical formula is CCl4. It contains carbon in its +4 oxidation state and chloride ions.

Properties[change | change source]

It is a colorless liquid. It smells like chloroform. It evaporates quite quickly. It can dissolve fats and oils as well as other stuff such as iodine. It does not burn, but it does make phosgene when heated to a very high temperature.

Preparation[change | change source]

It is made by reacting methane with chlorine. This reaction is similar to the burning of methane (reaction of methane with oxygen). Hydrogen chloride, chloromethane, dichloromethane and chloroform are byproducts (left over substances). It used to be made by reacting carbon disulfide with chlorine. This reaction would produce sulfur(I) chloride.

Uses[change | change source]

The uses of carbon tetrachloride have diminished lately because it is known to be damage people's health. People think it might damage the ozone layer. Today, it is rarely used for anything.

Previously, was used in fire extinguishers. It was also used to make freon, used in dry cleaning and as a refrigerant.

Safety[change | change source]

Carbon tetrachloride is very poisonous to the liver, the kidneys and the nervous system; it might also cause cancer.

References[change | change source]

  1. NIOSH Pocket Guide to Chemical Hazards. "#0107". National Institute for Occupational Safety and Health (NIOSH).

Related pages[change | change source]