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Composition :
| Name of The
active ingredient |
Percentage in
W/W |
| Methyl Parathion Technical |
2% |
| Inert Ingredients |
98% |
| Total |
100% |
Chemical Class: Organophosphate
Introduction: Methyl
parathion is an organophosphate insecticide
and acaricide used to control boll weevils
and many biting or sucking insect pests
of agricultural crops, primarily on cotton.
It kills insects by contact, stomach and
respiratory action. Methyl parathion is
available in dust, emulsifiable concentrate.
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Formulation : Methyl
parathion is available in dust, emulsifiable
concentrate.
Target Crops :- All
agricultural crops
Target Pests :- Methyl
parathion is an organophosphate insecticide
and acaricide used to control boll weevils
and many biting or sucking insect pests
of agricultural crops, primarily on cotton.
It kills insects by contact, stomach and
respiratory action. Methyl parathion is
available in dust, emulsifiable concentrate.
Ecological Effects :
-
Effects on
birds: Methyl parathion is
very highly to highly toxic to birds.
Reported acute oral LD50 values are
3 mg/kg in American kestrels, 7.5 mg/kg
in European starlings, 6 to 10 mg/kg
in mallards, 8 mg/kg in northern bobwhites,
10 to 24 mg/kg in red-wing blackbirds,and
8 mg/kg in ring-neck pheasants The 5-
to 8-day dietary LC50 values reported
for methyl parathion include 69 ppm
in Japanese quail, 330 to 680 ppm in
mallard, 90 ppm in northern bobwhite,
and 91 ppm in ring-neck pheasant .
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Effects on
aquatic organisms: Methyl parathion
is moderately toxic to fish and to animals
that eat fish . Reported 96-hour LC50
values are from 1.9 to 8.9 mg/L in the
following fish species: coho salmon,
cutthroat trout, rainbow trout, brown
trout, lake trout, goldfish, carp, fathead
minnow, black bullhead, channel catfish,
green sunfish, bluegill, largemouth
bass, and yellow perch. Reported 96-hour
LC50 values indicate very high toxicity
for aquatic invertebrates such as Daphnia
spp., scuds, and side swimmers
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Effects on other
organisms: Methyl parathion is toxic
to bees.
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Breakdown
in soil and groundwater: Methyl
parathion is of low persistence in the
soil environment, with reported field
half-lives of 1 to 30 days A representative
value is estimated to be 5 days . The
rate of degradation increases with temperature
and with exposure to sunlight. Methyl
parathion is moderately adsorbed by
most soils, and is slightly soluble
in water . Due to its low residence
time and soil binding affinity, it is
not expected to be significantly mobile.
4-Nitrophenol, a breakdown product of
methyl parathion, does not adsorb well
to soil particles and may contaminate
groundwater. When large concentrations
of methyl parathion reach the soil,
as in an accidental spill, degradation
will occur only after many years, with
photolysis being the dominant route
. Some volatilization of applied methyl
parathion may occur.
-
Breakdown
in water: Methyl parathion
degrades rapidly in seawater, lake,
and river waters, with 100% degradation
occurring within 2 weeks to 1 month
or more. Degradation is faster in the
presence of sediments, and is faster
in fresh water than in salt water. Complete
breakdown occurs at a rate of 5 to 11%
in 4 days in rivers, and more slowly
in marine waters. In water, methyl parathion
is subject to photolysis, with a half-life
of 8 days during the summer and 38 days
in winter
-
Breakdown
in vegetation: Uptake and metabolism
of methyl parathion in plants is fairly
rapid. Within 4 days after applying
methyl parathion to the leaves of corn,
it was almost completely metabolized
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Appearance:
Pure methyl parathion is a colorless
crystalline solid. The technical product
is light to dark tan, with about 80%
purity.
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Chemical
Name: O,O-dimethyl O-4-nitrophenyl
phosphorothioate
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CAS Number:
298-00-0
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Molecular
Weight: 263.21
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Water Solubility:
55-60 mg/L @ 25 C
-
Solubility
in Other Solvents: s. in dichloromethane,
2-propanol, toluene, and most organic
solvents; i.s. in n-hexane
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Melting
Point: 35-36 C
-
Vapor Pressure:
1.3 mPa @ 20 C
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Partition
Coefficient: 3.5185-3.8388
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Adsorption
Coefficient: 5100
Dosage :- Foliar application
1Kg-2kg /acre, and soil application is
3-4 Kgs/Acre.
| PACKING |
| 500 gm DB x 40 =
20 kg. CFB |
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