Carbon tetrachloride, also known by many other names (the most notable being carbon tet in the cleaning industry, and as Halon or Freon in HVAC; see Table for others) is the organic compound with the formula CCl4. It was formerly widely used in fire extinguishers, as a precursor to refrigerants, and as a cleaning agent. It is a colourless liquid with a "sweet" smell that can be detected at low levels.
Both carbon tetrachloride and tetrachloromethane are acceptable names under IUPAC nomenclature.
Read more about Carbon Tetrachloride: History and Synthesis, Properties, Uses, Safety