Pyrethrum CAS:8003-34-7
Product Detail
| pyrethroid is the main raw material for the preparation of mosquito incense, and is the insecticidal active ingredient contained in pyrethrum, a perennial herb of Asteraceae. There are mainly pyrethrins I and II, in addition, there are a small amount of similar structure of the leaf pyrethroid I, leaf pyrethroid II and so on. Various synthetic pyrethroid-like compounds have been used as insecticides, collectively referred to as pyrethroids. Pyrethrins are yellow viscous oily liquids with a fragrance. Insoluble in water, soluble in a variety of organic solvents. Unstable, in case of alkali decomposition failure, in strong light or high temperature decomposition failure. The main dosage forms are powder, emulsifiable concentrate, aerosol, oil, mosquito coil and so on. Has a strong contact killing effect, insecticidal spectrum. Short residual period. Mainly used for the prevention and control of health pests, livestock pests. Very safe for humans and animals, no damage to plants, no residue, no pollution of agricultural products and the environment of botanical pesticides. Safe for warm-blooded animals. The intensity of toxicity to insects, with the strongest pyrethroid, pyrethroid 1 times, pyrethroid II again, pyrethroid II the weakest. FAO/WHO recommends a daily allowance of 0.04mg/kg body weight (including other pyrethroids). Rats were orally administered 1500mg/kg. Maximum allowable concentration in food: 1.0mg/kg for fruits and vegetables (including pyrethroid I) in Sweden; 3 mg/kg for fish (dry) and unprocessed grains recommended by FAO/WHO, dried fruits, dried vegetables, fresh fruits and vegetables, peanut, stone fruit is 1 mg/kg (including other pyrethroids). |
| Molecular Formula | C43H56O8 |
| Molar Mass | 700.9 |
| Density | 0.84-0.86 g/cm3 |
| Boling Point | 421.7°C at 760 mmHg |
| Flash Point | 75°C |
| Water Solubility | 0.2 (pyrethrin I) and 9 (pyrethrin II) mg l-1(ambient temp.) |
| Vapor Presure | 2.7×10-3 (pyrethrin I) and 5.3×10-5(pyrethrin II) Pa |
| Appearance | neat |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.45 |
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