PMEP Home Page Chem-News Chem-News Archive: 1992 Chem-News October 1992

Chem-News October 1992

2,4-D EXPOSURE REDUCTION
The 2,4-D Task Force and EPA have reached agreement on exposure 
reduction measures, label changes, extended data due dates, and suspension 
hearing waiving for 2,4-D products.  The agency said the last study due date 
is Dec. 31, 1995, and revised technical labels are to be filed by October 30, 
reviewed by December 15, 1992 and will include requirements for:
"Long-sleeved shirt, long pants, shoes, socks required for all 
mixers/loaders applicators plus chemical-resistant gloves and face shield or 
safety glasses for non-turf sites and users of turf liquid products with 
"WARNING" or "DANGER" signal words; rubber gloves for users of turf liquid 
amine products and chemical-resistant gloves for users of non-amine 
formulations.  Coveralls or chemical resistant aprons required for open 
pouring of containers greater than one gallon.
"'Probe and pump' systems . . . for transferring the contents of 
containers of five gallons or more in capacity."
"Maximum application rates of 2 lb./acre/applications (pasture and 
rangeland), 4 lb./acre/application (forestry site preparation) and 2 
lb./acre/application (turf)."
"Maximum number of broadcast applications 2/year/site (turf)."
Hygiene statements (washing hands and other exposed areas of the body 
and laundering of clothing before reuse); requirements vary by product type 
and use.
"For turf, people (other than the applicator) or pets are not allowed on 
treatment areas during application. Reentry is prohibited until sprays have 
dried or dusts have settled. For agricultural and forestry sites, restricted 
entry intervals are prescribed by requirements" of the farm worker protection 
standards.
- Pesticide & Toxic Chemical News, 10/7/92
IMPLEMENT DELANEY COURT DECISION IN 1994, FISHER PREDICTS
The Delaney clause court decision, if it is not overturned, will be 
implemented by EPA in late 1993 or 1994, according to Linda Fisher, EPA's 
Assistant Administrator for Prevention, Pesticides and Toxic Substances.
It is the agency's intention to revoke Section 408 and 409 tolerances.  
Fisher said that registrations for the 30-35 carcinogenic pesticides may be 
canceled as well.
The implementation will probably lead off with the four pesticides 
(benomyl, mancozeb, phosmet, and trifluralin) that were cited in the court 
action, she said.
The EPA official said that the decision would be implemented "in a way 
that is respectful of the court decision and that is the least disruptive to 
the agency and the industry.  There is no human health risk here, so there is 
no need to throw EPA and the industry into chaos."
Fisher said that the implementation plan and the list of pesticides and 
crops would be published in the Federal Register for comment either along with 
or separate from the proposal to revoke the tolerances.  The list of 
pesticides and crops will probably not be issued for some time, she indicated.
The decision and its implementation is "a dramatic issue for the program 
and industry," she declared.
"I hope Congress changes the law," Fisher said, predicting that this 
might happen next year, but not this year. 
- Pesticide & Toxic Chemical News, August 5, 1992.
DAMINOZIDE AND AMITROLE REGULATORY DECISIONS ISSUED BY EPA
Daminozide -- Non-food use determination and Special Review Decision
EPA has published the final daminozide regulatory decision allowing the  
continued use on certain non-food plants (ornamental and bedding crops), and 
the notice includes the EPA's final assessment of dietary risks, which stated:
"In light of the revised lifetime dietary risk estimate of 2.6 x 10-5, 
and the benefits of the food uses as estimated in 1989, EPA believes that it 
would have pursued the same course of action as that taken in 1989. Therefore, 
the revised dietary risk assessment does not change the agency's regulatory or 
scientific position on the food uses of daminozide."
The agency estimated the life-time cancer risk to workers from the 
continued non-food uses of daminozide to be 10 -7 (less than 1 cancer in a 
million workers) from exposure to UDMH (unsymmetrical dimethylhydrazine), a 
daminozide contaminant.
The agency estimated that the potential economic impacts from 
cancellation of daminozide "would be no less than $15 million but could be 
considerably higher."
-  Federal Register, 10/8/92
Amitrole -- Preliminary determination to Terminate Special Review
EPA has concluded that the risks of amitrole are outweighed by the 
benefits of continued use and therefore proposes that the Special Review based 
on potential carcinogenic risk of amitrole to workers be concluded.  Use of 
bromoxynil data as a surrogate for amitrole data and the data on dermal 
penetration have enabled the Agency to refine the amitrole risk assessment to 
be more realistic than the worst-case assessment conducted earlier.  The label 
modifications and risk reduction measures taken by the registrant, Rhone-
Poulenc, have significantly reduced worker exposure to amitrole.  
Consequently, there is a corresponding reduction in the risks posed by the 
remaining uses of amitrole.  Even given the differences in risk between 
amitrole and its most likely alternatives, EPA believes that the 3.3 x 10-5 
risk associated with 35 years of exposure to amitrole is outweighed by the 
benefits of use.  The Agency believes that amitrole's remaining uses pose no 
significant threat to workers or the general public, and that its 
significantly lower costs and higher efficacy rates as compared to its 
alternatives merit retention of the remaining uses.  However, because of the 
positive carcinogenicity studies, the Agency will continue to require that 
amitrole remain a Restricted Use pesticide, that the cancer warning statement 
remain in place, that the current application method remain limited to boom 
sprayers and that present protective clothing requirements remain on labeling.
-  Federal Register, 10/8/92
EXPERIMENTAL USE PERMITS GRANTED BY EPA 
The following federal experimental use permits have been 
granted/published by EPA and cite New York State as one of the states on the 
application.
1.  A permit to Hoechst Celanese Corp. for the use of 1,204.50 pounds of  
monoammonium 2-amino-4-(hydroxymethylphosphinyl)butanoate on 511 acres of 
soybeans, tree and vine crops and non crop areas to evaluate the control of 
weeds until June 6, 1993.
2.  A permit to Rohm and Haas Company for the use of 321 pounds (each 
year) of myclobutanil on 535 acres (each year) of cucurbits to evaluate the 
control of powdery mildew until Jan. 22, 1994.
3.  A permit to Sandoz Crop Protection Corporation for the use of 3,390 
pounds of 2- CHLORO-N-[(methyl-2-methoxy]-N-(2,4-dimethyl-thien-3-yl)-
acetamide on 3,920 acres of corn to evaluate control of yellow nutsedge, 
annual grasses and annual broadleaf weeds until March 1, 1994.
- Federal Register, 9/30/92
TOLERANCES SET FOR RESIDUES OF LAMBDA-CYHALOTHRIN (Karate)
Pesticide tolerances were established for lambda-cyhalothrin (Karate) at 
0.02 p.p.m. in fat of cattle, goats, horses and sheep; and 0.25 p.p.m. in milk 
fat (reflecting 0.01 p.p.m. in whole milk).  The tolerances were petitioned by 
ICI Agricultural Products.
- Federal Register, 7/22/92
PESTICIDE PETITIONS WITHDRAWN BY EPA
EPA has withdrawn a number of pesticide petitions at the request of 
certain registrants.  The agency said that "certain registrants have requested 
the agency to withdraw their pesticide petitions for food or food additive 
petitions without prejudice to future filings."
The following pesticide petitions that were filed via notices in the 
Federal Register have been withdrawn.
Amitraz (Upjohn) and its metabolites containing the 2,4-dimethylaniline 
moiety at  3.0 p.p.m. in or on apples.
Asulum (Rhone-Poulenc) and its metabolites containing the sulfanilamide 
moiety N4-acetylasulam and N4-acetylsulfanilamide at 35 p.p.m. in or on fresh 
alfalfa, clover; 130 p.p.m. in or on hay of alfalfa, clover; 3 p.p.m. in or on 
flax straw, flaxseed, and its fractions meal, oilseed cake, refined oil, and 
soapstock; 1.0 p.p.m. in meat, fat, and meat byproducts of cattle, hogs, 
horses, sheep; 0.2 p.p.m. in meat, fat, and meat byproducts of poultry; 0.3 
p.p.m. in milk; 0.03 p.p.m. in eggs.  
Atrazine (Ciba-Geigy) and its metabolites 2-amino-4-chloro-6-ethylamino-
s-triazine, 2-amino-4-chloro-6-isopropylamino-s-triazine, and 2-chloro-4,6-
diamino-s-triazine at 4.0 p.p.m. in or on grass range hay.
Bendiocarb (BFC Chemicals) at 0.05 p.p.m. in or on corn forage, fodder, 
and grain, and in milk, eggs, and in meat, fat, and meat byproducts of cattle, 
goats, horses, sheep, poultry; 0.1 p.p.m. in kidney of cattle, goats, horses, 
poultry, sheep.
Benomyl (Du Pont) and its metabolites containing the benzimidazole 
moiety at 10.0 p.p.m. in or on head lettuce.
1-(4-Chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-1-YL)-2-butanone-
(Mobay Chemical) and its metabolite beta-(4-chlorophenoxy) dimethylethyl-1H-
1,2,4-triazole-1--ethanol at 0.1 p.p.m. in or on cucumber; 0.2 p.p.m. in or on 
tomatoes (whole, fresh), both for imported commodities.
Chlorothalonil (formerly Diamond Shamrock) and its metabolite 4-hydroxy-
2,5,6-trichloroisophthalonitrile at 0.1 p.p.m. in or on oranges, and 
grapefruit.
Chlorothalonil (formerly Diamond Shamrock) at 5.0 p.p.m. in or on 
peaches.  
Chlorothalonil (SDS Biotech) at 0.1 p.p.m. in or on apples. 
Cyano-(3-phenoxyphenol) methyl-4-chloro-alpha-methylethyl)-
benzeneacetate (Shell Oil) at 4.0 p.p.m. in or on raisins and grapes.   
Cyano-(3-phenoxyphenol) methyl-4-chloro-alpha-methylethyl)-
benzeneacetate (Shell Oil) at 10.0 p.p.m. in or on Brussels sprouts.  
Dichlobenil (Thompson-Hayward) and its metabolite 2,6-dichlorobenzoic 
acid at 5 p.p.m. in fish.
O,O-Diethyl O-[4-(Methylsulfinyl)Phenyl]Phosphorothioate (formerly 
Mobay's Chemagro) at 0.05 p.p.m. in or on dry and green beans (except lima 
beans); 0.8 p.p.m. in or on bean forage and hay.  
Dimethipin (Uniroyal Chemical) at 0.1 p.p .m. in or on potatoes.   
Dimethyl tetrachloroterepthalate (formerly Diamond Shamrock) and its 
metabolite tetrachloroterephthalic acid at 30 p.p.m. in or on alfalfa; 1 
p.p.m. in or on asparagus, lima beans, peas, and the vines or hay of field 
beans, lima beans, mung beans, snap beans, garden peas, southern peas, and 
soybeans; 0.02 p.p.m. for negligible residues in eggs, milk, and meat, fat, 
and meat byproducts of cattle, goats, hogs, horses, poultry, sheep.
Ethalfluralin (Elanco Products) at 0.05 p.p.m. in or on succulent peas 
and beans. 
Flucythrinate (American Cyanamid petition of Feb. 9, 1983) at 1.0 p.p.m. 
in or on apples, and in fat of goats, hogs, horses, sheep; 0.1 p.p.m. in whole 
milk and in meat byproducts of cattle, goats, hogs, horses, sheep; 2.0 p.p.m. 
in milk fat.
Metolachlor (Ciba-Geigy) at 0.3 p.p.m. in or on sunflowers. 
Metolachlor (Ciba-Geigy) at 0.1 p.p.m. in or on apples. 
Oxadiazon (Rhodia's Chipman) and the metabolites 2-tert-butyl-4-(2,4-
dichloro-5-hydroxyphenyl)-delta2-1,3,4-oxadizolin-5-one and 2-
carboxyisopropyl-4-(2,4-dichloro-5-isopro-poxyphenyl)-delta2-1,3,4--
oxadiazolin-5-one at 0.20 p.p.m. for negligible residues in or on soybean hay; 
0.05 p.p.m. for negligible residues in or on soybeans.  
Oxadiazon (Rhodia) at 0.05 p.p.m. in or on almonds, apples, grapes; 1.0 
p.p.m. in or on almond hulls.  
Oxamyl (DuPont) at  0.2 p.p.m. in or on corn fodder and forage; 0.1 
p.p.m. in or on corn grain (field, sweet, popcorn). 
Oxamyl (DuPont) at  2 p.p.m. in or on cabbage.
Other pesticide petitions withdrawn were petitions that were submitted 
to EPA but not formally noted in the Federal Register.  These were described 
by the agency as:
Methomyl -- Du Pont, pineapple, et al. Asulam -- Rhodia, grasses, 
et al. 2,4-D --Ciba-Geigy, apples, et al.  Methomyl -- 
Interregional Research Project No. 4, forage grasses, et al.  
Oxamyl -- Du Pont, beans.  Aldicarb -- Union Carbide, grapes.  
ETHEPHON -- GAF, cottonseed.  DCNA -- IR-4, tomatoes.  Propachlor 
-- IR-4, onions.  Linuron -- IR-4, lettuce.  Fenvalerate -- Shell 
Chemical, sorghum grain.  Bendiocarb -- BFC Chemicals, range 
grass.  Fenvalerate -- IR-4, trefoil.  Chlorothalonil -- Diamond 
Shamrock, apples.  Etridiazole -- Olin Chemical, peanuts.  
Methomyl -- IR-4, sugarcane.  Simazine -- IR-4, rhubarb.  Amitraz 
--BFC Chemicals, apples.  Amitraz -- Upjohn, apples.
Metolachlor -- Ciba-Geigy, peanuts.  Cypermethrin -- FMC, tomatoes.  
Acephate -- Chevron Chemical, grapes.  MCPB -- IR-4, mint hay.  Amitraz 
--BFC Chemicals, grapes.  Oxamyl -- IR-4, grapes.  Oxamyl -- Du Pont, 
lettuce, et al.  2,4--DB -- IR-4, oats, et al. Etridiazole -- IR-4, 
peppers.  THIOPHANATE METHYL -- IR-4, cabbage, et al.  Etridiazole -- 
IR-4, cabbage, et al.  Fenvalerate -- IR-4, asparagus.  Ethoprop -- lR-
4, lettuce.  
- Pesticide & Toxic Chemical News, July 29, 1992.
NEW ACTIVE INGREDIENT APPLICATIONS FILED
EPA has received applications from Abbott Laboratories, Chemical and 
Agricultural Products Division, to register two pesticide products:  Xentari 
Technical Powder, Biological Pesticide with active ingredient Bacillus 
thuringiensis subsp. aizawai lepidopteran active toxin(s) at 19%, and Xentari 
Water Dispersible Granule, Biological Insecticide with the same active 
ingredient at 10.3%.  The proposed classification for both is general, with 
the first proposed for manufacturing use only and the second for terrestrial 
greenhouse and aquatic food crop uses.
- Federal Register, 7/31/92
STATES TOLD OF PYRETHROID LABEL CHANGE PLAN
A representative of an industry work group told state pesticide 
officials June 13 that manufacturers of pyrethroids have agreed to label 
changes to protect aquatic ecosystems.
Dr. Edward T. Cherry, manager of regulatory affairs for FMC 
Corporation's Agrichemical Group, told the state officials that the work group 
had just submitted a plan under which the manufacturers have agreed to make 
label changes to include statements regarding proper calibration of aerial and 
ground application equipment, restrictions regarding application during 
excessive winds and during temperature inversions, buffer zones where 
appropriate, limitations on boom lengths for aerial equipment and a limitation 
of no more than 10 applications a growing season.
--Pesticide & Toxic Chemical News.  July 15, 1992.
APPLICATIONS TO REGISTER PESTICIDE PRODUCTS
EPA received applications as follows to register pesticide products 
containing active ingredients not included in any currently registered 
products pursuant to the provisions of section 3(c)(4) of FIFRA.  Notice of 
receipt of these applications does not imply a decisions by the Agency on the 
applications.
Products Containing Active Ingredients Not Included In Any Currently 
Registered Products
1.  File Symbol:  275-IA.  Applicant:  Abbott Laboratories, Chemical and 
Agricultural Products Division, 1401 North Sheridan Road, North 
Chicago, IL  60064.  Product name:  Xentari Technical Powder.  
Biological Insecticide.  Active ingredient:  Bacillus thuringiensis 
subsp. aizawai lepidopteran active toxin(s) at 19 percent.  Proposed 
classification/Use:  General.  For manufacturing use only.  (PM 18)
2.  File Symbol:  275-IL.  Applicant:  Abbott Laboratories.  Product 
name:  Xentari Water Dispersible Granule.  Biological Insecticide.  
Active ingredient:  Bacillus thuringiensis subsp. aizawai 
lepidopteran active toxin(s) at 10.3 percent.  Proposed 
classification/Use:  General.  For terrestrial, greenhouse, and 
aquatic food crop uses. (PM 18)
- Federal Register, July 31, 1992.
EPA published notices of receipt of applications to register pesticide 
products containing new active ingredients.  
Buckman Laboratories filed an application for Busan 1104, containing the 
new active ingredient lH-pyrazole-1-methane 1,3,5-dimethyl at 93%. The 
product, a microbiocide, was proposed for use in emulsion paints, adhesives, 
latex, polish, waxes, paper inking chemicals, detergents, textiles and 
construction materials.
Tifton Innovation Corp. filed an application for Dr. Biosedge, 
containing the new active ingredient puccinia canaliculata spores, 95%, for 
use in control of yellow nutsedge.
AKZO Chemicals, Inc. filed an application for the registration of 
SINESTO B, containing the new active ingredient alkyl trimethylamminium 
chloride, 12%, for use on fresh-cut lumber to control sap stains.
- Federal Register, September 9, 1992
RAPESEED CROP GROUPING EXPANSION PROPOSED
EPA proposed expanding the crop grouping for rapeseed to add Brassica 
napus, Brassica campestris and Crambe abyssinica (oil-seed producing varieties 
only which include canola and crambe)."  The change was requested by IR-4.
The agency said tolerances established for rapeseed "are adequate to 
cover pesticide residues in or on canola and crambe," noting that "canola, 
crambe and rape are closely related and have similar growth habits, cultural 
practices, and pest problems."
- Pesticide & Toxic Chemical News, September 9, 1992.
BRIEF NOTES
SAFER PESTICIDE POLICY COMMENT PERIOD EXTENDED To NOV. 5
The comment period for EPA's advance notice of proposed policy for 
development of safer pesticides has been extended to Nov. 5, 1992 according to 
an EPA notice published in the Sept. 10 Federal Register.  
DELANEY CLAUSE court decision stay motion was granted by the U.S. Court 
of Appeals for the Ninth Circuit. The Justice Department had not responded to 
EPA's request to seek U.S. Supreme Court review of the decision. EPA's Delaney 
clause decision implementation plan will be the subject of a briefing Oct. 23 
for Linda Fisher, EPA Assistant Administrator for Prevention, Pesticides and 
Toxic Substances.
EPA PARATHION public meetings have been scheduled for December 1, 1992 
in Lincoln, Nebraska and December 3, 1992 in Amarillo, Texas.
Dr. Stanford N. Fertig has retired from USDA's Agricultural Research 
Service. He was the chief U.S. delegate to the Codex Alimentarius Committee on 
Pesticide Residues and a former faculty member at Cornell University.
FERBAM Section 3(c)(2)(B) suspension hearing requested by UCB Chemical 
Corporation has been dismissed without objection by EPA ALJ Thomas W. Hoya 
COMPATIBILITY OF PESTICIDES with water-soluble packaging measurement 
methods will be defined in a standard to be prepared by a task group of the 
Pesticide Formulation and Application Systems Subcommittee of the ASTM 
(American Society for Testing and Materials) Committee E-35 on Pesticides, 
according to an ASTM news release.  
- Pesticide & Toxic Chemical News

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