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On 10/23/2010 3:24 AM, RHF wrote:
... The use of DDT was Banned in the United States in 1972/3, although DDT is still in use in some other parts of the World. http://www.3dchem.com/molecules.asp?ID=90 ... Actually, DDT is not as banned as one might think ... when I worked for Occidental Chemical ag chem division in the early 1980's, it was only necessary to file a wavier claiming nothing but DDT was suitable or would work for insect control of certain insects and a wavier was granted for its' use ... I can't remember the name of the product which contained DDT which still was in use, but it contained 20% DDT ... it is severely limited in use though ... Regards, JS |
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