Initiated by the detection of the so called “ozone hole” over the Antarctic, the Montreal Protocol on Substances that deplete the Ozone Layer came into force in 1987. The Protocol regulates the phase-out of production and consumption of ozone-depleting substances, such as chlorofluorocarbons (CFC) in refrigeration and air conditioning. This phase-out has led to the introduction of new, environmental-friendly technologies in industrialized countries.

Carbon tetrachloride (CTC) is a solvent and cleaning agent used widely across many industry segments. Its high solvency power, low cost and the fact that it is non-flammable made it popular in many cleaning applications.