1020 N Street
||California Notice 97-5
||POST UNTIL January 15, 1998
NOTICE OF INITIATION OF REEVALUATION OF PESTICIDE PRODUCTS
Pursuant to Articles 8 and 12 (Title 3) of the California Code of Regulations, the Director of the Department
of Pesticide Regulation (DPR), notices its decision to initiate a reevaluation of pesticide products. Interested
persons may comment on this decision up to and including the date shown on the top-right corner of this notice
to the Department of Pesticide Regulation, Pesticide Registration Branch, 1020 N Street, Room 332, Sacramento,
DPR commences reevaluation of the following pesticide products without further notice. The products included
in this reevaluation
are rodenticides that contain one percent or more of the active ingredient diphacinone.
U.S. EPA Reg. No.
|Bell Laboratories, Inc.
||1% Diphacinone Concentrate 12455-71-AA
||Diphacin 110-A Concentrate 2393-493-AA
BASIS OF REEVALUATION
The pesticide active ingredient diphacinone is registered in California for use in and around homes, agricultural
and industrial buildings, and in sewers for the control of Norway rats, roof rats, and house mice. DPR registers
51 products containing diphacinone. Of the currently registered products, 49 are intended for end-use and contain
0.2 percent or less diphacinone. Containing one percent and two percent diphacinone, the two remaining products
are concentrates intended for use in the formulation of end-use rodenticides.
DPR initiates this reevaluation based on its review of acute toxicity data recently submitted to support the registration
of Bell Laboratories, Inc.'s product, 1% Diphacinone Concentrate®. DPR found the submitted acute dermal toxicity
and primary dermal irritation studies to be unacceptable. Without the submission of acceptable acute toxicity studies,
DPR is unable to determine whether the precautionary statement currently on the label of the product adequately
identifies acute toxicity hazards.
After a search of the database, DPR determined that no acute toxicity studies are on file to support the registration
of Haco, Inc.'s product, Diphacin 110-A Concentrate®. Haco's product contains two percent diphacinone. Without
the results of acceptable acute toxicity studies, DPR cannot determine whether the precautionary statement currently
on the product label adequately identifies acute toxicity hazards.
Pursuant to this reevaluation, DPR intends to ask the registrants of both products to submit acceptable acute toxicity
studies. Based upon the results of the acute toxicity studies, DPR will determine whether the product labels adequately
identify acute toxicity hazards.
For information, please contact Ms. Ann Prichard, Senior Environmental Research Scientist, Pesticide Registration
Branch, by E-mail at (firstname.lastname@example.org) or by telephone at (916)
original signed by Barry Cortez
|Barry Cortez, Chief
Pesticide Registration Branch
cc: Ms. Ann Prichard
James W. Wells