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In
the past, CFC-113 use was essential in many industrial applications:
in electronic assembly production processes, precision cleaning
and general metal degreasing during manufacture, as well as in dry
cleaning and other industrial applications. CFC-113 began to be
used in the 1970s in metal degreasing and other areas owing to concern
over the toxicity of the chlorinated solvents used previously.
For many years 1,1,1-trichloroethane was
the solvent of choice to replace other more toxic chlorinated solvents
for general metal cleaning. Carbon tetrachloride is no longer used
as a solvent in most countries because of its toxicity, but it is
still used in some parts of the world.
CFC-113, 1,1,1-trichloroethane, CTC, and bromochloromethane are
ozone depleting substances whose production and consumption is controlled
under the Montreal Protocol. With support from the Protocol's Multilateral
Fund delivered by UNEP, UNDP, UNIDO, the World Bank and bilateral
agencies, developing countries are phasing out these ozone depleting
chemicals in this sector.
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