Daily Chemical
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Piperonyl oxybutyl ether
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Product description
Parameters
Piperonyl butoxide, a colorless and odorless liquid. Industrial products are brown-yellow. Boiling point 180℃<133.3Pa). The relative density is 1.059, the refractive index is 1.50, and the flash point is 171°C (open cup). Insoluble in water, soluble in most organic solvents such as dichlorodifluoromethane. Acute oral administration of LD5011500mg/kg in rats, acute percutaneous LD501880mg/kg in rabbits, no carcinogenicity. It is obtained by chloromethylation with formaldehyde and hydrochloric acid after safrole by catalytic hydrogenation, and etherification with butoxyethoxyethanol. Broad-spectrum synergist. Can improve the insecticidal activity of pyrethrins, a variety of pyrethroids, rotenone and carbamate insecticides
Basic Information
Chinese name: piperonyl butyl ether
Foreign name: piperomyl butoxide
Alias: piperonyl butoxide
Molecular formula: C19H30O5
Relative molecular mass: 338.49
Chemical category: organic matter--ether
Control type: no control
Storage: sealed and dried
Physical properties
Appearance and properties: light yellow to light brown transparent oily liquid.
Relative density (water = 1): 1.059
Boiling point (℃): 180 (0.133kPa)
Molecular formula: C19H30O5
Molecular weight: 338.49
Flash point (℃): 171.1
Solubility: miscible in methanol, ethanol, benzene
preparation
Safrole undergoes high-pressure hydrogenation under nickel catalysis to obtain safrole hydroxide, which is chloromethylated and then condensed with butyl carbitol, and then obtained by vacuum fractionation and purification.
It is obtained by chloromethylation with formaldehyde and hydrochloric acid after safrole by catalytic hydrogenation, and etherification with butoxyethoxyethanol. Broad-spectrum synergist.
application
Insecticides. It is used to kill the insects produced during storage of grains such as rice, wheat and beans, such as grain weevil. It is often used in combination with the insecticide pyrethrin to form a complex for synergistic effect. The mortality rate of insecticide with pyrethrin alone (for example, housefly) is 46%. If the preparation (30mg+400mg) combined with this product is used, the killing rate can reach 92%. Usually, this product is mixed with 10 times the amount of pyrethrin and formulated into 0.05%~0.2% emulsion or powder for use. After applying this product, its residual effect can maintain the insect-proof effect for about 1-10 months. According to Japanese regulations, it can be used for cereals with a limit of 0.024g (based on this product). Examples of compound pesticides: 1.2% of this product, 0.08% of pyrethrins, 98.72% of mineral substances (60kg of grain is about 120g for mixing and spraying).
Precautions
Dangerous
Health hazards: Harmful to the body after inhalation, ingestion or absorption through the skin. With stimulating effect. Taking a large amount of this product by mistake can cause vomiting and diarrhea.
Environmental hazards: It may be harmful to the environment and may cause pollution to water bodies.
Explosion hazard: explosive, the product is flammable and irritating.
first-aid
Skin contact: Take off contaminated clothing immediately and rinse with plenty of running water. Seek medical attention.
Eye contact: Lift the eyelid and rinse with running water or saline. Seek medical attention.
Inhalation: quickly leave the scene to a place with fresh air. Keep the airway open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.
Ingestion: Drink enough warm water to induce vomiting. Seek medical attention.
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