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Azinphos Methyl - Label Change for Guthion 10/90

Azinphos-Methyl; Deletion of Certain Uses and Directions for Use for
Agricultural Crops

SUMMARY:  This notice announces that Mobay Chemical Corporation, one of the
four producers of the technical active ingredient azinphos-methyl in the
United States has requested to amend its registrations of Guthion Technical
(EPA reg. no. 3125-108), Guthion 25% Wettable Powder Insecticide for
Repackaging of an Insecticide (EPA reg. no. 3125-153), Guthion 22 Concentrate
(EPA reg. no. 3125-223), Guthion Garden Spray Insecticide for Repackaging of
an Insecticide Only (EPA reg. no. 3125-225), Guthion 50% Wettable Powder (EPA
reg. no. 3125-193), Guthion 50% Wettable Powder in Water Soluble Packets (EPA
reg. no. 3125-301), Guthion 35% Wettable Powder (EPA reg. no. 3125-378),
Guthion 35% Wettable Powder in Water Soluble Packets (EPA reg. no. 3125-179),
Guthion 2L (EPA reg. no. 3125-102), and Guthion 2S (EPA reg. no. 3125-123) by
deleting all uses and directions for use on the following 22 agricultural
crops: apricots, barley, beans, blackberries, boysenberries, broccoli,
brussels sprouts, cabbage, cauliflower, celery, clover, grass mixture,
loganberries, oats, pasture grasses, peas, raspberries, rye, soybeans,
spinach, tobacco, and wheat. EPA is at this time soliciting comments on the
proposed amendments.

SUPPLEMENTARY INFORMATION:  Azinphos-methyl is the commonly accepted name for
O,O-dimethyl-S-[(4-oxo-1,2,3-benzotriazin-3 (4H)-yl)methyl]phosphor-dithioate.
It is a broad spectrum organophosphate insecticide that was initially
registered as a pesticide under FIFRA in 1957 by Mobay Chemical Corporation.
Azinphos-methyl is primarily used in the formulation of insecticide products
for use on terrestrial food crops and terrestrial non-food crops.  Azinphos-
methyl is marketed by Mobay Chemical Corporation under the trade name Guthion.
Mobay, one of the four registrants of technical grade azinphos-methyl, has
requested to amend their registrations for Guthion products by deleting all
uses and directions for use on the 22 crops listed in this notice.  EPA
intends to approve this request.  Since there will no longer be Guthion
manufacturing use products available from which to formulate registered end-
use azinphos-methyl products on the 22 crops, the other three registrants,
Aceto Chemical Company, Makhteshim-Aagan (America) lnc., and Gowan Company,
are being notified by certified mail that they are being given the opportunity
to generate data in support of the reregistration of azinphos-methyl for the
22 crops listed in this notice.  End-use registrants of azinphos-methyl are
being notified by certified mail that their generic data exemption is not
valid for these uses.  In the event that Aceto Chemical Company, Makhteshim-
Agan (America) Inc., or Gowan Company, do not generate the data necessary to
reregister the use of azinphos-methyl for the 22 crops listed in this notice,
end-use registrants will be given opportunity to generate dala in support of
these uses.  EPA is now soliciting comments on the proposed amendments.
Interested persons are invited to submit written comments to the address given
above.

     Federal Register, 10/31/90