Re: 2,4-Dinitrophenol

Kathy Brunetti (brunetti@empm.cdpr.ca.gov)
Mon, 2 Aug 1999 12:15:53 -0700

>Hi,
>I haven't posted here before but have been following the discussions for a
>few months now and wanted to share some information that is relevant to
>the discussion of whether 2,4- Dinitrophenol is a pesticide or not and its
>relative toxicity.
>
>According to my 1989 Farm Chemicals Handbook, 2,4-Dinitrophenol is indeed
>a pesticide sold under the trade name Chemox PE. It is listed as an
>insecticide/acaricide and fungicide. As for toxicity it is relatively
>toxic, judging from the oral LD50 value (the quantity of material needed
>to kill 50% of the test animals) of 30mg/kg. By way of comparison,
>the herbicide 2,4-D has an oral LD50 of 375 mg/kg, and chlorpyrifos ( a
>very widely used insecticide) has an LD50 of about 100mg/kg. I don't know
>if this material is still available or if it has been banned since 1989.

No products containing 2,4-Dinitrophenol are currently registered as
pesticides with the US Environmental Protection Agency. 13 products
have been registered in the past. No products have been registered
in California since 1991. No products containing 2,4-Dinitrophenol
appear to have been registered under the trade name Chemox PE. Four
Chemox PE products were previously registered in the U. S.; they
contained various salts of BUTYL-4,6-DINITROPHENOL, also known as
dinoseb.

****************************************
Kathy Brunetti, Senior Land and Water Analyst
California Department of Pesticide Regulation
830 K Street, Sacramento, California, USA 95814
voice (916) 324-4100, FAX (916) 324-4088
<brunetti@empm.cdpr.ca.gov>
Our Web site: http://www.cdpr.ca.gov

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