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Active Ingredient: Ethoprophos
Chemical Family: aliphatic organothiophosphate
insecticides;organothiophosphate nematicides
Chemical Name: O-ethyl S,S-dipropyl phosphorodithioate
(IUPAC);O-ethyl S,S-dipropyl phosphorodithioate (CAS)
CAS No.: 13194-48-4
Formula: C8H19O2PS2
Products:
90% Tech,20%Granular 10% Granular, 5% Granular and 20%EC,40%EC and
70%EC
Specification for 90% Tech:
Appearance: Achromatous Transparent Liquid
Content: 90.0% min.
Water: 0.50% max.
Acid (as H2SO4): 0.50% max.
Propyl Mercarptan: 0.10% max.
Application Information:
Nematicide, soil insecticide. Action by contact; must be mixed with
soil or carried by water into soil. May be used at planting with no
waiting period. For bananas, beans (snap, lima), cabbage, corn,
cucumber, flue-cured tobacco, peanuts, pineapple, plantains,
soybeans, sugarcane, sweet potato, white potato. Bermuda, zoysia,
St. Augustine, centipede, Fescue, Kentucky Blue, perennial rye,
Bahia grasses in commercial turf.
Physical and Chemical Characteristics
Technical product is achromatous and transparent liquid. With a
solubility in water of 750mg/l(25), it can be dissolved in most
organic solvent; Its steam pressure is 4.66?0-2pα(26) and it is
stable in acid solution; in alkaline medium, it can be decomposed in
a short time. With an excellent stability against light and
temperature, it isnt decomposed for 12 weeks under 50, and for 8
hours under 150.
Toxicology
Ethoprophos is a high-poison insecticide and nematocide. Technical
grade per-os LD50for house mouse is 26mg/kg, acute dermal
toxicityLD50 is 226, and acute inhalation toxicity LC50 is 249mg/m3.
It has strong poison on aquatic, middle-poison on bees, and extreme
poison on birds. Within test dosage, no teratogenic action,
mutagenesis and carcinogenesis on animals. Formulation: 5%, 10%, and
20% granule; 20%, and 70% EC.
Characteristics
Ethoprophoss main action mechanism is to prevent activities of
acetylcholine, and the mode is tagging out with a good endosmosis.
So once the pharmaceutical product toutches polypide, and especially
after wireworms begin exuviating the effects will work. However it
has no obvious suffocating or systemic actions.
Control targets
Various wireworms , mole cricket, wireworm, cutworm, Orseoia oryzae
etc
Applied technology
1. To control Orseoia oryzae in paddy fields, 1-1.2kg 10% granule
per mu(667m2) is used during the period from seedlings until
one-leaved-one-pith. When 7-10 days before transplanting rice
seedlings, mix some fine sandy soil with per-mu(667m2) dosage and
apply the combo equably. During application, some aqueous layer is
necessary.
2. To control Meloidogyne arenria, 2-3kg 10% granule is needed per
mu(667m2). Mix it with soil, sprinkle to planting trenches and
holes, and then earth up to avoid direct contact between
pharmaceutical products and seeds.
3. To control Tylenchulus semipenetrans, 5-8kg 10% granules are used
per mu(667m2). Mix it with surface soil within the irrigation line
around fruit trees. And then irrigating.
4. To control Grub, mix 3-4 kg 10% granule with some fine earth and
apply into planting trenches, or apply the mixed equably granule
onto stalks of young sugarcane and then earth up.
5. To control baccy wireworms and soil insects, apply the product in
strips. 4-6kg 10% granule per mu(667m2) is sprinkled into planting
trenches one week ahead of sowing (apply products before using
ground fertilizer) and then mix with surface immediately.
6. To control soybean nematode, 2-4kg 10% granule is sprinkled into
planting trenches when or a week ahead of sowing. Sow seed before
earthing up.
Detoxifcation
The main poisoning symptom of ethoprophos are choking sensation in
chest, perspire, abdominal pain, emesis, diarrhea, and so on. If
someone takes it by accidente, feed the sufferer with 1-2 cups water
and locate a fingure into throat to make vomiting. However a
fufferer in narcosis is not allowed to be feeded with anything and
he/she should be sent to a hospital at once. Efficient antidote to
this product is atropine and pyraldoxime methiodide.
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