CAS No. 145701-21-9

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Adverse Effects

ACTIVITY: Herbicide (Triazolopyrimidine)

CAS Name: N-(2,6-dichlorophenyl)-5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidine-2-sulfonamide


Adverse Effects:

Body Weight Decrease

29 Texas peanut farmers argued that during the 2000 growing season Dow's newly marketed fluorinated diclosulam herbicide called Strongarm severely damaged their crops. In their efforts to create a Class Action suit, the farmers lost their case in two courts. They then appealed to the U.S. Supreme Court. On April 27, 2005, the Supreme Court ruled that farmers whose crops are damaged by federally approved pesticides or herbicides may pursue damage claims against the manufacturers in state court.

FAN's Index to Class Action

News Reports and Timeline relating to the Class Action.

Regulatory Information
(only comprehensive for the US)
US EPA Registered: Yes
US EPA PC Code: 129122
US Tolerances: CFR 180.543
US Maximum Residue Levels permitted in food commodities
Meat (hulls removed),
Soybean - Seed
Other Information
Molecular Formula: C13H10Cl2 F N5O3S
Entry Year: 1995
Inventing Company: Dow Elanco 
Manufacturers: Dow Agro
Other Names: Crosser, Diclocular,
Spider, Strongarm,
XDE-564, EUP-49, EUP-31
Of special interest:
PAN Data
October 2001 - Glossary of Pesticide Chemicals. A listing of pesticides subject to analysis of residues in foods and feeds by the US Food and Drug Administration. Also available at: http://vm.cfsan.fda.gov/~acrobat/pestglos.pdf
August 2001 - IR-4: New Products/Transitional Solution List - This list contains brief descriptions of numerous new pest control materials that have been introduced over the last several years and includes Diclosulam

US Federal Register
Date Published Docket Identification Number Details
June 20, 2001 na

DOW AGRO - Issuance of Experimental Use Permit (62719-EUP-49). This EUP allows the use of 3 pounds of the herbicide diclosulam on 110 acres of peanuts to evaluate the control of broadleaf weeds and sedges in preplant incorporated, preemergence, and post pest emergence testing trials. The program is authorized only in the States of New Mexico and Texas. The EUP is effective from May 15, 2001 to March 31, 2002.

March 8, 2000 OPP-300977

DOW AGRO - Pesticide Tolerances for residues in or on soybean seed and peanut nutmeat at 0.02 ppm. - FINAL RULE.

Feb 24, 1999 OPP-181066 Strongarm herbicide. Application for Emergency Exemption for use on peanut fields in Texas. EPA has received a specific exemption request from the Texas Department of Agriculture to use the new chemical diclosulam (Strongarm Agriculture Herbicide, EPA File Symbol 62719-EII) to treat up to 184,000 acres of peanuts, to control broadleaf weeds. The Applicant proposes the use of a new chemical which has not been registered by the EPA.
Sept 27, 1995 na

DOW ELANCO - Issuance of Experimental Use Permit (62719-EUP-31). This experimental use permit allows the use of 2.67 pounds of the herbicide on 86 acres of soybeans to evaluate the control of broadleaf weeds and sedges. The program is authorized only in the States of AL, AR, GA, KY, LA, MS, MO, NC, SC, TN, and VA. The experimental use permit is effective from July 18, 1995 to March 1, 1997. This permit is issued with the limitation that all treated crops are destroyed or used for research purposes only.

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