| CAS
NO |
52315-07-8
(formerly 69865-47-0) |
|
| FORMULA |
C22H19Cl2NO3 |
| MOL
WT. |
416.32 |
|
H.S.
CODE
|
2926.90
|
|
SYNONYMS |
Ammo; Avicade; Barricade; |
| alpha-cyano-3-phenoxy-benzyl
ester of the dichloro analogue of chrysanthemic acid, 2,2-dimethyl-
3-(2,2-dichlorovinyl) cyclopropanecarboxylic acid; CCN 52; Cymbush; Folcord; Imperator; Kafil
super; Polytrin; Ripcord; Stockade; |
| Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, cyano(3-phenoxyphenyl) methyl ester;
(+ -)-Alpha-cyano-3-phenoxybenzyl-(+ -)-cis, trans-3-(2,2-dichlorovinyl)-2,2- dimethylcyclopropane carboxylate;
Cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcycloptopane- carboxylate;
(RS)-alpha-Cyano-3-Phenoxybenzyl
(1RS)-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate; |
| SMILES |
|
|
CLASSIFICATION
|
Pyrethroid |
|
TOXICITY
|
MAMMALS |
Acute oral
LD50 for rats 200~800, for mice 138mg/kg.
Acute dermal LD50
for rats 1600mg/kg.
Acute inhalation LC50 for rats
(4h)2.5mg/งค air.
Slight eye and skin irritation.
Rats fed 100mg/kg diet
for 90 days showed no adverse effect.
NOEL for rats 2.1mg/kg diet, ADI
0.01mg/kg body weight. |
WILDLIFE |
Acute oral
LD50 for chickens >2,000mg/kg |
| FISH
|
LC50(96h) for rainbow
trout 0.002~0.0028ppm.
However, under field conditions, fish are not at risk
normal agricultural usage. |
BEE |
Highly toxic to bees in laboratory
test, but field applications at recommended dosages do not put hives at
risk |
|
GENERAL
DESCRIPTION AND APPLICATIONS
|
|
Chemically,
Cypermethrin is Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, cyano(3-phenoxyphenyl) methyl ester
or (+ -)-Alpha-cyano-3-phenoxybenzyl-(+ -)-cis, trans-3-(2,2-dichlorovinyl)-2,2- dimethylcyclopropane carboxylate.
Cypermethrin is the ISO name for the pure racemic compound.
Technical cypermethrin is a racemic mixture of eight
possible isomers which have their own chemical and biological properties.These isomers are commonly grouped into
four cis- and four trans-isomers.
The commercial products have available
contain more than 90% cypermethrin and the ratio of cis
: trans varies
from 50:50 to 40:60. The cis-group is more
powerful. Its structure is similar with pyrethrum obtained from chrysanthemum
and used as a natural
insecticide. But synthetic cypermethrin is more stable and biological effective
than its natural model. Cypermethrin,
a synthetic
pyrethroid insecticide,
acts as a stomach and contact insecticide
which is effective against a wide range
of insect pests in cereals, cotton,
citrus, fruit trees, rape, soybean, tobacco, tomatoes, vegetables, vines,
forestry and other crops. |
| SPECIFICATION |
|
APPEARANCE
|
Yellowish brown
viscous semi-solid mass |
|
PURITY |
92.0% min |
|
SPECIFIC GRAVITY
|
1.23 at
20กษ |
|
VAPOR
PRESSURE |
2.3*10-7mmHg at
20กษ |
|
MELTING
POINT |
60
~ 80กษ |
|
CORROSIVENESS |
Non corrosive to
metals |
|
SOLUBILITY(20กษ) |
0.004mg/l water, 337g/l
ethanol In most organic solvents (acetone, cyclohexane, ketone, chlorform,
benzene, xylene, etc.) is greater than 450g/l |
|
PARTITION
COEFFICIENT |
Kow
logP=15.2(20กษ) |
|
STABILITY |
Stable in neutral and acidic media,
hydrolyzed in alkaline media.
Thermally stable up to 220กษ. DT50 in
loamy soil 90 d.
Only slight photochemical decomposition. |
|
RATIO OF
RACEMATES |
cis 40
~ 50 / trans
50 ~ 60 (This ratio is adjustable)
Typical cis / trans =
45/55 |
| TRANSPORTATION |
| PACKING |
50kgs
in drum
|
| HAZARD CLASS |
6.1
(Packing Group III) |
| LABEL |
The
label must read: Harmful by inhalation, in contact
with skin, and if swallowed; keep out of reach
of children; keep away from food, drink, and
animal feed.
|
| UN
NO. |
2902 |
| REMARKS |
|
|