FLUORIDE ACTION NETWORK PESTICIDE PROJECT

Return to FAN's Pesticide Homepage

Return to Fluazifop-p-butyl Index Page


Fluazifop-p-butyl. Extoxnet Profile. Pesticide Management Education Program at Cornell University.


From: Cornell U. Pesticide Management Education Program (PMEP)
http://pmep.cce.cornell.edu/

E X T O X N E T
Extension Toxicology Network


Pesticide Information Profile

Fluazifop-p-butyl

TRADE OR OTHER NAMES

Trade names for commercial products containing this herbicide include
Tornado, Fusilade 2000, Fusilade Five, and Fusilade Super. The compound is
compatible with a wide variety of other herbicides. The compound is also
found in formulations with the herbicide fomesafen.

INTRODUCTION

Fluazifop-p-butyl is a selective phenoxy herbicide used for postemergence
control of annual and perennial grass weeds. It is used on soybeans and
other broad-leaved crops such as carrots, spinach, potatoes, and
ornamentals.

Fluazifop-p-butyl is a general use pesticide.

NOTE: This herbicide is a different compound than either fluazifop or
fluazifop butyl. Both the chemical structures and the toxicities of these
compounds are different. Fluazifop-p-butyl formulations can contain some
fluazifop-butyl.

TOXICOLOGICAL EFFECTS

ACUTE TOXICITY

Fluazifop-p-butyl is a slightly toxic compound which carries the signal
word CAUTION on its label. A single dose of the formulated compound
(Fusilade 2000) can cause severe stomach and intestine disturbance.
Ingestion of large quantities may cause problems in the central nervous
system such as drowsiness, dizziness, loss of coordination and fatigue.
Breathing small amounts of the product may cause vomiting and severe lung
congestion. This may ultimately lead to labored breathing, coma and death
(1).

The acute oral LD50 of fluazifop-p-butyl is 3,680 for male rats and 2,451
for female rats. The dermal LD50 for the compound is greater than 2,450 in
rabbits. This value indicates that the compound has a low to moderate
toxicity when in contact with the skin. It is only a mild skin and eye
irritant and causes no skin sensitization (2).

CHRONIC TOXICITY

Rats fed small amounts of fluazifop-p-butyl for three months developed no
compound induced effects at doses at or below 10 mg/kg.

Reproductive Effects

No information is currently available.

Teratogenic Effects

No information is currently available.

Carcinogenic Effects

No information is currently available.

Mutagenic Effects

No information is currently available.

Organ Toxicity

No information is currently available.

Fate in Humans and Animals

No information is currently available.

ECOLOGICAL EFFECTS

Fluazifop-p-butyl is practically non-toxic to mallard ducks. Its acute oral
LD50 in mallards is greater than 3,528 mg/kg. Values for other species are
not currently available, thus its overall toxicity to birds, invertebrates,
and mammals cannot be adequately assessed. The compound does, however, have
a very low toxicity to bees. Oral and contact LD50s for bees are greater
than 0.20 mg/bee (2).

ENVIRONMENTAL FATE

Fluazifop-p-butyl breaks down rapidly in moist soils. Its half- life in
moist conditions is generally less than a week (2). The major degradation
product of fluazifop-p-butyl will also break down fairly rapidly. Its
half-life is around three weeks.

Fluazifop-p-butyl is actively taken up by plants and translocated
throughout the plant. The compound accumulates in the actively growing
regions of the plant (shoots, root rhizomes, stolons of grass) where it
interferes with the plant cell's ability to produce energy. In plants,
fluazifop-p-butyl is rapidly broken down in the presence of water to
fluazifop-p.

Exposure Guidelines:


NOEL (rat): 10 mg/kg


Physical Properties:

CAS #: 69806-50-4
Chemical name: (R)2-[4[445[-(trifluoro-methyl)-2-pyridinyl]oxy]-phenoxy]
propanoate
Chemical class/use: Phenoxy, trifluoromethyl, pyridine herbicide
Solubility in water: 1 mg/l
Solubility in other solvents: soluble in most organic solvents
Melting point: 5 degrees C
Vapor Pressure: 0.054 mPa at 20 degrees C
Stability: Compound is stable to UV light; decomposes at 210 degrees C


BASIC MANUFACTURER

Zeneca Ag Products
Wilmington, Delaware 19897
Telephone 800-323-8633

Review by Basic Manufacturer:

Comments solicited: December, 1992
Comments received:

REFERENCES

1.Material Safety Data Sheet. ICI Americas Inc. Fusilade 2000.
2.The Agrochemicals Handbook. 1991. The Royal Society of Chemistry.
Cambridge, England.

Last Modified: 03/11/1998

For more information relative to pesticides and their use, please contact
the PMEP staff at:
5123 Comstock Hall
Cornell University
Ithaca, New York 14853-0901
(607)-255-1866
Last Modified: 03/11/1998