The relative resistance of mammals to the pyrethroids is almost wholly attributable to their ability to hydrolyze the pyrethroids rapidly to their inactive acid and alcohol components, since direct injection into the mammalian CNS leads to a susceptibility similar to that seen in insects. Some additional resistance of homeothermic organisms can also be attributed to the negative temperature coefficient of action of the pyrethroids, which are thus less toxic at mammalian body temperatures, but the major effect is metabolic. Metabolic disposal of the pyrethroids is very rapid, which means that toxicity is high by the intravenous route, moderate by slower oral absorption, and often unmeasureably low by dermal absorption. /Pyrethroids/
Synthetic pyrethroids are generally metabolized in mammals through ester hydrolysis, oxidation, and conjugation, and there is no tendency to accumulate in tissues. In the environment, synthetic pyrethroids are fairly rapidly degraded in soil and in plants. Ester hydrolysis and oxidation at various sites on the molecule are the major degradation processes. /Pyrethroids/
来源:Hazardous Substances Data Bank (HSDB)
毒理性
毒性总结
识别和使用:Tralomethrin 是一种固体。它以前被用作杀虫剂。人类暴露和毒性:吸入拟除虫菊酯类化合物(如 Tralomethrin)的临床表现可能是局部或全身性的。局限于上呼吸道的局部反应包括鼻炎、打喷嚏、喉咙痒、口腔粘膜水肿,甚至喉粘膜水肿。下呼吸道的局部反应包括咳嗽、气短、喘息和胸痛。在敏感患者中,急性暴露会引起类似哮喘的反应。慢性暴露的个体可能会出现胸痛、咳嗽、呼吸困难、支气管痉挛的过敏性肺炎。动物研究:合成拟除虫菊酯是神经毒素,通过在哺乳动物和/或昆虫的钠通道上相互作用,作用于外周和中央神经系统的轴突。单次剂量就会在哺乳动物中产生毒性迹象,如震颤、过度兴奋、流涎、舞蹈病样运动和瘫痪。在接近致死剂量水平,合成拟除虫菊酯会导致神经系统短暂变化,如坐骨神经轴突肿胀和/或断裂以及髓鞘退行性变。它们不会被认为会引起由一些有机磷化合物诱导的迟发性神经毒性。在为期2年的小鼠研究中,以10 mg/kg/天的剂量观察到以下效果:增加死亡率、增加行为影响、皮肤病变、增加食物和水的消耗、增加尿量、肝和肾重量暂时增加、皮肤炎和肌炎在雄性和雌性中。在一项代际繁殖研究中,Tralomethrin 以剂量0、0.75、3.0和12.0 mg/kg/天通过灌胃方式每天给药给大鼠。在任何剂量水平下都没有发现对F0或F1父母生殖性能的有害影响的证据。在F1幼崽中,12 mg/kg/天组的幼崽出生时初始体重(出生时)有所下降。在F1和F2幼崽的哺乳期间,中剂量和高剂量组观察到与剂量相关的幼崽体重下降,而母体大鼠在3和12 mg/kg/天时体重下降。生态毒性研究:Tralomethrin 对 D. magna 有毒性,LC50 为 0.15 ug/L。在处理后1小时接触处理的叶子的蜜蜂中它不具有毒性。
IDENTIFICATION AND USE: Tralomethrin is a solid. It was formerly used as an insecticide. HUMAN EXPOSURE AND TOXICITY: The clinical manifestations of inhalation exposure to pyrethrins, such as tralomethrin, can be local or systemic. Localized reactions confined to the upper respiratory tract include rhinitis, sneezing, scratchy throat, oral mucosal edema, and even laryngeal mucosal edema. Localized reactions of the lower respiratory tract include cough, shortness of breath, wheezing, and chest pain. An asthma-like reaction occurs with acute exposures in sensitized patients. Hypersensitivity pneumonitis characterized by chest pain, cough, dyspnea, and bronchospasm may occur in an individual chronically exposed. ANIMAL STUDIES: Synthetic pyrethroids are neuropoisons acting on the axons in the peripheral and central nervous systems by interacting with sodium channels in mammals and/or insects. A single dose produces toxic signs in mammals, such as tremors, hyperexcitability, salivation, choreoathetosis, and paralysis. At near-lethal dose levels, synthetic pyrethroids cause transient changes in the nervous system, such as axonal swelling and/or breaks and myelin degeneration in sciatic nerves. They are not considered to cause delayed neurotoxicity of the kind induced by some organophosphorus compounds. In 2 year mouse study at 10 mg/kg/day the following effects were observed: increased mortality, increased behavioral effects, skin lesions, increased food and water consumption, increased urine volume, transient increase in liver and kidney weights, dermatitis and myositis in male and female. In a generation reproduction study tralomethrin was administered daily by gavage to rats at dose levels of 0, 0.75, 3.0, and 12.0 mg/kg/day. No evidence of adverse effects on reproductive performance of either male or the female F0 or F1 parents were noted at any dose levels. Some signs of decreased initial body weight (at birth) were noted in the F1 pups in the 12 mg/kg/day group. Dose-related decreases in pup weights were observed during lactation in the F1 and F2 pups in the mid- and high- dose groups while the parent rats showed decreases in body weight at 3 and 12 mg/kg/day. ECOTOXICITY STUDIES: Tralomethrin was toxic to D. magna, with LC50 of 0.15 ug/L. It was not toxic to bees contacting treated foliage 1 hr after application.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
副作用
神经毒素 - 其他中枢神经系统神经毒素
Neurotoxin - Other CNS neurotoxin
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
毒理性
毒性数据
LCLo(大鼠)= 286 毫克/立方米/4小时
LCLo (rat) = 286 mg/m3/4h
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
/Pyrethroid/ detoxification ... important in flies, may be delayed by the addition of synergists ... organophosphates or carbamates ... to guarantee a lethal effect. ... /Pyrethroid/
Decontaminate the skin promptly with soap and water ... . If irritant or paresthetic effects occur, obtain treatment by a physician. Because volatilization of pyrethroids apparently accounts for paresthesia affecting the face, strenuous measures should be taken (ventilation, protective face mask and hood) to avoid vapor contact with the face and eyes. Vitamin E oil preparations (dL-alpha tocopheryl acetate) are uniquely effective in preventing and stopping the paresthetic reaction. They are safe for application to the skin under field conditions. Corn oil is somewhat effective, but possible side effects with continuing use make it less suitable. Vaseline is less effective than corn oil. Zinc oxide actually worsens the reaction. /Pyrethroids/
When radioactive pyrethroid is administered orally to mammals, it is absorbed from intestinal tract of the animals and distributed in every tissue examined. Excretion of radioactivity in rats admin trans-isomer: dosage: 500 mg/kg; interval 20 days; urine 36%; feces 64%; total 100%. /Pyrethroids/
Although limited absorption may account for the low toxicity of some pyrethroids, rapid biodegradation by mammalian liver enzymes (ester hydrolysis and oxidation) is probably the major factor responsible for this phenomenon ... Most pyrethroid metabolites are promptly excreted, at least in part, by the kidneys. /Pyrethroids/
An insecticidal resin coating film comprising a combination of an acrylonitrile and/or methacrylonitrile copolymer resin and an insecticidal component selected from the group consisting of specified compounds exhibits an insecticidal effect, since the compound is kept on the surface of the coating film in a state capable of exhibiting its insecticidal effect for a long period of time.
A stable solid pesticidal preparation which contains a benzyl ester type synthetic pyrethroid having a cyano group in α-position and an organophosphate compound as effective ingredients supported on a mineral carrier, with at least one weakly acidic salt of an alkali or alkaline earth metal being incorporated therein.
Sustained release pesticidal or plant growth regulating composition
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0646314A1
公开(公告)日:1995-04-05
There are discolsed a pesticidal composition containing a water-insoluble alginate, which is prepared by treating a solid composition containing (a) a pesticidally active ingredient which is a pest-controlling active ingredient or a plant growth-regulating active ingredient and (b) an alginic acid or a water-soluble alginate with an aqueous solution containing a divalent or polyvalent cation which can convert said alginic acid or water-soluble alginate into a water-insoluble alginate. Also disclosed is a pesticidal composition containing a water-insoluble alginate, which is prepared by coating a solid substance containing the pesticidally active ingredient with a water-insoluble alginate. The composition of the invention has excellent sustained-release effects of the pesticidally active ingredient.
Residual control of parasites by long-acting shampoo formulations
申请人:LABORATOIRES VIRBAC
公开号:EP0714601A1
公开(公告)日:1996-06-05
The invention relates to shampoo compositions comprising a detergent and at least one active compound selected from juvenile hormone-like nitrogen containing heterocyclic compounds, other insect growth regulators such as methoprene or fenoxycarb, synthetic pyrethroids and mixtures thereof, wherein the dose of the active compound is sufficient for leaving on the haircoat of a warm-blooded animal after rinse out the shampoo an ovicidally and/or insecticidally and/or acaricidally residual effective amount against ectoparasites of said compound. Such shampoo compositions are useful for a residual control of ectoparasites on warm-blooded animals.
This invention relates to a dry pesticidal composition containing an active ingredient for controlling pests, a surfactant, a modified starch, a carbonate and a solid acid, wherein said constituents of said composition are combined together by means of a water-soluble polymer which is soluble in a volatile solvent. The composition has sufficient hardness and high solubility in water.