General Description
A viscous amber partly crystalline oil. Used as an insecticide.
Reactivity Profile
Cyfluthrin is a pyrethrine derivative. Incompatible with azocyclotin, and perhaps other azo compounds and organometallics.
Potential Exposure
Cyfluthrin is a synthetic pyrethroid,
nonsystemic insecticide used to control a variety of chew-
ing and sucking insects on cotton, hops, cereals, corn, pea-
nuts, fruit, potatoes, and other crops and vegetables. It is
also used to control structural pests such as termites.
Cyfluthrin can be found in both Restricted Use Pesticides
(RUP) and General Use Pesticides (GUP) category. It is
also a nitrile.
First aid
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions) if
breathing has stopped, and CPR if heart action has stopped.
Transfer promptly to a medical facility. When this chemical
has been swallowed, get medical attention. Give large
quantities of water and induce vomiting. Do not make an
unconscious person vomit.
Shipping
UN2811 Toxic solids, organic, n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required. UN3349 (pyrethroid pesticide, solid,
toxic)/151 Pyrethroid pesticide, solid toxic, Hazard Class:
6.1; Labels: 6.1-Poisonous material UN3439 Nitriles, solid,
toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous
materials, Technical Name Required.
Incompatibilities
May react violently with strong oxidi-
zers, bromine, 90% hydrogen peroxide, phosphorus
trichloride, silver powders, or dust. Incompatible with silver
compounds. Mixture with some silver compounds forms
explosive salts of silver oxalate. Nitriles may polymerize in
the presence of metals and some metal compounds. They
are incompatible with acids; mixing nitriles with strong
oxidizing acids can lead to extremely violent reactions.
Nitriles are generally incompatible with other oxidizing
agents such as peroxides and epoxides. The combination of
bases and nitriles can produce hydrogen cyanide. Nitriles
are hydrolyzed in both aqueous acid and base to give car-
boxylic acids (or salts of carboxylic acids). These reactions
generate heat. Peroxides convert nitriles to amides. Nitriles
can react vigorously with reducing agents. Acetonitrile and
propionitrile are soluble in water, but nitriles higher than
propionitrile have low aqueous solubility. They are also
insoluble in aqueous acids
.
Chemical Properties
In pure form this chemical may be colorless
crystalline solid or powder. Commercial is a yellowish
paste or viscous, yellowish-brown oil. Aromatic odor.
Waste Disposal
Incineration would be an
effective disposal procedure where permitted. If an efficient
incinerator is not available, the product should be mixed
with large amounts of combustible material and contact
with the smoke should be avoided. In accordance with
40CFR165, follow recommendations for the disposal of
pesticides and pesticide containers.
Uses
Cyfluthrin is used to control a wide range of insects, especially
Lepidoptera, in cereals, fruit, vegetables and cotton. It is also used against
migratory locusts and grasshoppers, in stored products, in public health
situations and in animal health.
Definition
ChEBI: A carboxylic ester obtained by formal condensation between 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid and (4-fluoro-3-phenoxyphenyl)(hydroxy)acetonitrile.
Agricultural Uses
Insecticide: Cyfluthrin is a non-systemic insecticide used to control a variety of chewing and sucking insects on cotton, hops, cereals, corn, peanuts, fruit, potatoes and other crops and vegetables. It is also used o control structural pests such as termites.
Trade name
AZTEC®; ATTATOX®; BAY FCR 1272®; BAYTHROID®; BAYTHROID® H; BAYTHROID® TECHNICAL; BUG-B-GON®; CONTUR®; CYLATHRIN®; EULAN SP®; FCR 1272®; INTUDER®; INTUDER HPX®; LASER®; RENOUNCE®; RESPONSAR®; SOLFAC®; TEMPO®; TEMPO® H; TEMPO® 20WP
Metabolic pathway
The non-enzymatic hydrolyzed products of 14C-
cyfluthrin are isolated and identified by the incubation
reaction mixture of a buffer solution. The products are
derived from the hydrolysis of the ester linkage of
cyfluthrin via cyanhydrin. This results in the
corresponding aldehyde which undergoes both
oxidation and reduction to give rise to carboxylic acid
and benzyl alcohol, respectively.
Degradation
Cyfluthrin is a stable compound but it is hydrolysed at high pH. DT50
values in water at 22 °C at pH 4, 7 and 9 were 25-117, 11-20, and 3-7
days, respectively (PM). Under aqueous photolysis conditions (but using
UV light and acetonitrile in the solution), its half-life was 12 days. The
benzldehyde (3, 3%) (Scheme 1) and the benzoic acid (5, 9%) were
detected at 144 hours (PSD).
On a soil surface in light, the initial half-life was 2 days. At day 9, 62%
of the radioactivity was recovered as: cyfluthrin (36%)) 3 (2%), 5 (4%)
and unidentified components (PSD). The compound was stable on a soil
surface in the dark.
