February 28, 2007
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 6, NUMBER 10, OCTOBER 1993
Ban: The U.S. Environmental Protection Agency has proposed a
ban on the non-essential uses of certain products containing
hydrochlorofluorocarbons, including some aerosol sprays,
pressurized dispensers, and foam products such as chair
cushioning. Contact Cynthia Newburg, Stratospheric Protection
Div. (6205-J), U.S. EPA, Washington DC 20460 (202-233-9729).
"FICs Could Be Next CFC and Halon Replacements," Global
Environ. Change Rep., pp. 1-3, Oct. 8. Two U.S. researchers
have identified a new generation of efficient, safe, and
environmentally benign compounds called fluoroiodocarbons (FICs).
Commercialization is expected in 1996 following further
evaluation of their properties. So far no significant drawbacks
to their use have been identified, and FICs are being taken
seriously by the U.S. EPA, the Defense Department and at least
one halon producer. Contact Environ. Technol. & Educ. Ctr.,
3300 Mountain Rd. NE, Albuquerque NM 87106 (505-256-1463).
Users Seek Exemptions from Ban on Ozone-Depleting
Substances," P. Zurer, Chem. Eng. News, pp. 15-16,
Aug. 16. The U.S. EPA was pleased that only a few CFC users in
the U.S. have requested exemptions from the production ban on
CFCs that goes into effect in January of 1996. They are mainly
automobile manufacturers and commercial building owners (for air
conditioning), and the pharmaceutical industry. But only
metered-dose inhalers for respiratory medicines are likely to be
exempted by the parties to the Montreal Protocol. Summarizes the
Protocol criteria for exemptions.
"Perfluorocarbon Use, Emissions May Face Restriction,"
P. Zurer, ibid., p. 16, Aug. 9. Perfluorocarbons (fully
fluoronated compounds) are ideal replacements for CFCs except for
one problem: their extremely high global warming potential. Also
discusses the U.S. EPA's attempts to reduce perfluorocarbons
emitted as a byproduct of aluminum smelting.
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Index of Abbreviations