Fluorocarbons disposal

TSCA also addresses the problem of polychlorinated biphenyls (PCBs) and chlorinated fluorocarbons (CECs). EPA has developed regulations on the cleanup, handling, and disposal of PCBs. The manufacture and use of CECs has been banned for all but essential uses, in accordance with the Montreal Agreement, an international treaty on worldwide use of CECs. 

This reaction is easily controlled, uses an inexpensive reagent, and gives benign products that are easily disposable. The method also shows promise as a means of converting inert saturated fluorocarbons into more reactive fiuoroalkenes or fluoroarenes for use in syntheses. 

Worthing 1987) and natural sources (Timmerman 1978 Who 1979). Although future production levels of carbon disulfide are uncertain because of a long-term decline in the demand for viscose rayon and cellophane and restrictions on the use of fluorocarbon propellants, it is expected that the demand for this chemical in many other specialty areas will continue at relatively stable levels (Timmerman et al. 1978). Carbon disulfide is used primarily in industry. Releases from industrial processes are almost exclusively to the atmosphere. Sources and releases of carbon disulfide to the immediate environment should be identified and quantified, and additional information is needed on the disposal of carbon disulfide. 

Defoamer 10. [Applied Textile Tedi.] NtHisilictme antifoam for use with dispose dye and/or systems that will be treated with a fluorocarbon in finish-irig. 

The major concern with fluorocarbon refrigerants is not personnel hazards but then-ozone depletion potential. Many types that were popular in the past are now banned by the Montreal Protocol or successor agreements (Section 9.1.7.2B). Handling and disposal of refrigerants with the potential for depleting the stratospheric ozone layer... 

The most promising method for the disposal of NF3 appears to be combustion with an excess of fuels such as hydrocarbons or fluorocarbons [1,2]. A modified laser combustor might serve as the disposal unit [1]. The gaseous products formed, such as HF (in the case of hydrocarbons) and NOx, must be removed in a subsequent process [1,2]. 

If possible, all unused quantities of fluorocarbons and fluorocarbon mixtures should be returned to the supplier. Disposal by venting, incineration, and scrubbing or by other means may be subject to permitting by federal, state or provincial regulations. Persons involved with disposal of fluorocarbons and fluorocarbon mixtures should check with the environmental authorities having jurisdiction to determine the applicability of permitting regulations to disposal activities. 

If disposal is necessary, follow all federal, state, provincial, and local regulations. Because of their stability, and in the interest of conservation, fluorocarbons can often be reclaimed and processed for reuse. Contact your supplier for details on the proper means by which this can be done. 

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