BAY 42247
FENITROTHION-O-ANALOG
CAS: 2255-17-6
Molecular Formula: C9H12NO6P
BAY 42247 - Names and Identifiers
BAY 42247 - Physico-chemical Properties
| Molecular Formula | C9H12NO6P |
| Molar Mass | 261.17 |
| Density | 1.339±0.06 g/cm3(Predicted) |
| Boling Point | 330.4±42.0 °C(Predicted) |
| Storage Condition | 0-6°C |
BAY 42247 - Risk and Safety
| UN IDs | 3018 |
| Hazard Class | 6.1(a) |
| Packing Group | II |
BAY 42247 - Reference Information
| Overview | thiophos, also known as fenesin, is a phosphate ester organic insecticide and acaricide, and the original drug is yellow-brown or light-yellow oily liquid, there is a smell of garlic, soluble in ethanol, acetone, ether and other most organic solvents, low solubility in aliphatic hydrocarbons, difficult to dissolve in water. It is stable under neutral and acidic conditions, and easy to decompose under high temperature and alkaline conditions. Copper, iron, aluminum and other metals will promote its decomposition. Long-term storage at room temperature and light are relatively stable. Low toxicity to higher animals, low toxicity to humans, livestock, fish. Highly toxic to bees. It has gastric poison and contact killing effect on the pest Spider mite. A broad spectrum of insecticides, permeability, can kill the borer pest. Main dosage form: 50% emulsifiable concentrate, 2% powder. |
| Table of maximum residue limits of pesticides | thiophos (based on raw grain) maximum residue limits for edible oils, vegetables and fruits (mg/kg) ≤ 5 shall not be detected ≤ 0.5 ≤ 0.5 National Standard No. GB4788-94 GB4788-94 GB4788-94 GB4788-94 |
| organophosphorus pesticides | phoxim, chlorpyrifos, trichlorfon, dichlorvos, malathion, acephate, dimethoate, triazophos, phosphoramidophos, propanophos bromide, diazinon, and thiophosphite. |
| Pest Control | the effect of thiophos on the stinging mouthpiece, chewing mouthpiece and borer pests is good. Mainly to emulsifiable concentrates on water spray or powder powder for rice, soybean, cotton, vegetables, fruit trees, tea trees, oil crops and trees, special effects on rice borer, can also control other lepidopteran larvae, the insect pests, such as leaf hopper, planthopper, thrips, aphids, toads, sweet potato paratae and spider mites, have poor effect on the eggs of the mites. Also can control flies, mosquitoes, cockroaches and other health pests and warehouse pests. Generally no phytotoxicity to crops, but sorghum and cruciferous vegetables are more sensitive. The use of methods are as follows: 1, control of vegetable aphid, simian insects, in the peak mu with 50% emulsifiable concentrate 50-75 ml, with water 50-60kg spray. 2, control of cabbage, cabbage, bean Borer, twenty-eight star bug, with 50% cream per mu 5O-75 ML (1000-1500 times liquid) and water 50kg spray. 3, control of red spiders, thrips, leaf flies, cotton bollworm, with 50% emulsifiable concentrate 1500-2000 times liquid spray, or mu with 2% powder 1.5-2kg powder. |
| note | 1. Cruciferous vegetables such as cabbage and radish are prone to phytotoxicity. 2, do not mix with alkaline pesticides, such as the need to mix, should be used immediately after mixing. 3, stop use 10 days before harvest. 4, when used with with the use of, after dilution can not be placed too long, so as not to affect the efficacy. 5, should be stored in a cool and dry place. 6, toxic to fish, the use of water can not be polluted. 7, high toxicity to bees, flowering should not be used. |
| production method | 3-methyl-4-nitrophenol can be obtained from m-cresol by nitrosation and oxidation, then react with dimethylthiophosphoryl chloride to obtain |
Last Update：2024-04-10 22:29:15
BAY 42247 - Uses and synthesis methods
overview
fenitrothion, also known as fenitrothion, is a phosphate ester organic insecticide and acaricide. The original drug is a yellowish brown or light yellow oily liquid with a smelly garlic smell and is easily soluble in ethanol, acetone, ether, etc. Most organic solvents have low solubility in aliphatic hydrocarbons and are hardly soluble in water. It is relatively stable under neutral and acidic conditions, and is easy to decompose under high temperature and alkaline conditions. Metals such as copper, iron, and aluminum will promote its decomposition. Long-term storage and light exposure at room temperature are relatively stable. Low toxicity to higher animals, low toxicity to humans, animals, and fish. Highly toxic to bees. It has stomach poison and contact effect on the pest spider mite. The insecticidal spectrum is wide, permeable, and can kill borer pests. Main dosage forms: 50% emulsifiable concentrate, 2% powder.
maximum pesticide residue limit table
fenitrothion cereals (based on raw grains) edible oil vegetables and fruits
maximum residue limit (mg/kg) ≤ 5 shall not be detected ≤ 0.5 ≤ 0.5
national standard number GB4788-94 GB4788-94 GB4788-94 GB4788-94
organophosphorus pesticides
Phoxim, chlorpyrifos, trichlorfon, dichlorvos, malathion, acephate, dimethoate, triazophos, fenthion, profenofos, diazinon, imidothion.
pest control
P> fenthion has good effects on stinging mouthparts, chewing mouthparts pests and drilling pests. Mainly use emulsifiable concentrate to spray water or powder for rice, soybeans, cotton, vegetables, fruit trees, tea trees, oil crops and forest trees. It has special effects on rice stem borer and can also control other lepidopteran larvae, leafhoppers, planthopper, thrips, aphids, scale insects, sweet potato small elephant beetles and other pests and spider mites, but the effect on mite eggs is poor. It can also prevent flies, mosquitoes, cockroaches and other sanitary pests and warehouse pests. There is generally no phytotoxicity to crops, but sorghum and cruciferous vegetables are more sensitive.usage method is as follows :
1, to control aphids and ape leaf worms, 50-75 ml of 50% emulsifiable concentrate and 50-60kg of water are used for spraying at the peak of occurrence. 2. To prevent and control Pieris rapae, vegetable borer, bean pod borer and 28-star ladybug, spray 50kg of water with 5O-75 ml (1000-1500 times liquid) of 50% emulsifiable concentrate per mu. 3. To prevent and control red spider, thrips, leaf miner and cotton bollworm, spray 1500-2000 times of 50% emulsifiable concentrate, or spray 1.5-2kg of 2% powder per mu.
precautions
1, cruciferous vegetables such as cabbage and radish are prone to phytotoxicity, and the concentration should not be too high when used.
2. It is not mixed with alkaline pesticides. If it needs to be mixed, it should be used immediately after mixing.
3, stop using 10 days before harvest.
4, use it as it is used, and do not leave it for too long after dilution, so as not to affect the efficacy.
5, should be stored in a cool and dry place.
6, it is highly toxic to fish and cannot pollute the water area when used.
7, it is highly toxic to bees and should not be used at flowering stage.
production method
It can be prepared by nitrosating and oxidizing m-cresol to 3-methyl-4-nitrophenol, and then interacting with dimethyl thiophosphoryl chloride.
Last Update：2024-04-10 22:29:15
