Phosmet 亚胺硫磷



英文通用名称 :phosemet
CAS no :732-11-6
EINECS :211-987-4
毒性: 亚胺硫磷属中等毒杀虫剂.原药大鼠经口LD50雄为203毫克/千克,雌为299毫克/千克,原药白兔经皮 LD50>3160 毫克/千克。在环境内和试验动物体内能迅速降解。
剂型 :20%、25%亚胺硫磷乳油。
特点: 亚胺硫磷是一种广谱有机磷杀虫剂,具有触杀和胃毒作用,残效期长。


1.棉花害虫的防治 防治棉蚜每亩用25%乳油50毫升,对水75千克喷雾。棉铃虫、红铃虫、棉红蜘蛛,每亩用25%乳油100--125毫升,对水75千克喷雾。
2.水稻害虫的防治 防治稻纵卷叶螟、稻飞虱、稻蓟马,每亩用25%乳油150毫升,对水50--75千克喷雾。
3.果树害虫的防治 苹果叶螨用25%乳油1000倍喷雾。苹果卷叶蛾、天幕毛虫用25%乳油600倍喷雾。 柑橘介壳虫用25%乳油600倍液喷雾。
4.蔬菜害虫的防治 菜蚜每亩用25%乳油33毫升,对水30--50千克喷雾。 地老虎用25%浮油250倍药液灌根。

1. 对蜜蜂有毒,喷药后不能放蜂。
2. 不能与碱性农药混用。
3. 中毒后解毒药剂可选用阿托品、解磷定等。


Refer to <docbook-pesticides> for more data. Want more and better data of pesticides? Create your own ebook? Please visit:

Insecticide, acaricide
IRAC 1B; organophosphate


Common name phosmet (BSI, E-ISO, (m) F-ISO, ESA); phtalofos (USSR); PMP (JMAF)
IUPAC name O,O-dimethyl S-phthalimidomethyl phosphorodithioate; N-(dimethoxyphosphinothioylthiomethyl)phthalimide
Chemical Abstracts name S-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl] O,O-dimethyl phosphorodithioate
CAS RN [732-11-6] EEC no. 211-987-4 Development codes R-1504 (Stauffer) Official codes OMS 232; ENT 25 705

Composition Tech. material is 92% pure. Mol. wt. 317.3 M.f. C11H12NO4PS2 Form Colourless crystals; (tech., off-white or pink, waxy solid). M.p. 72.0-72.7 ºC; (tech., 66-69 ºC) V.p. 0.065 mPa (25 ºC) KOW logP = 2.95 Henry 8.25 ´ 10-4 Pa m3 mol-1 (calc.) Solubility In water 25 mg/l (25 ºC). In acetone 650, benzene 600, toluene, methyl isobutyl ketone 300, xylene 250, methanol 50, kerosene 5 (all in g/l, 25 ºC). Stability Rapidly hydrolysed in alkaline media; relatively stable in acidic conditions; DT50 (20 ºC) 13 d (pH 4.5), <12 h (pH 7), <4 h (pH 8.3). Decomposes rapidly above 100 ºC. Decomposes in sunlight in aqueous solution or on glass plates. F.p. >106 ºC

History Insecticide reported by B. A. Butt & J. C. Keller (J. Econ. Entomol., 1961, 54, 813). Introduced by Stauffer Chemical Co. (became Zeneca Agrochemicals) and now marketed by Gowan Company and others. Patents US 2767194 Manufacturers Gowan

Biochemistry Cholinesterase inhibitor. Mode of action Non-systemic insecticide and acaricide with predominantly contact action. Uses Control of lepidopterous larvae, aphids, suckers, fruit flies, and spider mites on pome fruit, stone fruit, citrus fruit, ornamentals and vines; Colorado beetles on potatoes; boll weevils on cotton; olive moths and olive thrips on olives; blossom beetles on oilseed rape; leaf beetles and weevils on alfalfa; European corn borers on maize and sorghum; sweet potato weevils on sweet potatoes in storage; etc., at 0.5-1.0 kg/ha. Also used as an animal ectoparasiticide. Formulation types DP; EC; SL; WP. Compatibility Incompatible with alkaline materials. Selected products: 'Fosdan' (General Quimica); 'Imidan' (Gowan); 'Inovitan' (Efthymiadis); 'Prolate' (Gowan)

'Cekumet' (Cequisa); 'Fosmedan' (Papaeconomou) Discontinued products: 'Inovat' * (Productos OSA)

Product analysis by capillary gc. Residues in crops determined by capillary gc (M. A. Luke et al., J. Assoc. Off. Anal. Chem., 1981, 64, 1187; G. H. Batchelder et al., Anal. Methods Pestic., Plant Growth Regul. Food. Addit., 1967, 5, 257; J. E. Barney et al., Anal. Methods Pestic. Plant Growth Regul., 1972, 6, 408). Details available from Gowan Co.

Reviews FAO/WHO 83, 85 (see part 2 of the Bibliography). Oral Acute oral LD50 for male rats 113, female rats 160 mg/kg. Skin and eye Acute percutaneous LD50 for albino rabbits >5000 mg/kg; mild skin and eye irritant (rabbits). Not a skin sensitiser (guinea pigs). Inhalation LC50 (4 h) for male and female rats 1.6 mg 70% WP/l air. NOEL (2 y) for rats and dogs 40 mg/kg diet. Not carcinogenic or teratogenic. ADI (JMPR) 0.01 mg/kg b.w. [1998]. Toxicity class WHO (a.i.) II; EPA (formulation) II EC classification Xn; R21/22

Birds LC50 (5 d) for bobwhite quail 507, mallard ducks >5000 mg/kg diet. Fish LC50 (96 h) for bluegill sunfish 0.07, rainbow trout 0.23 mg/l. Daphnia LC50 (48 h) 8.5 mg/l. Bees LD50 0.001 mg/bee.

EHC 63 (WHO, 1986; a general review of organophosphorus insecticides). Animals In animals, rapid metabolism occurs to phthalamic acid, phthalic acid, and phthalic acid derivatives, which have been isolated from urine as phosmet metabolites (J. B. McBain et al., J. Agric. Food Chem., 1968, 16, 813-820). Plants In plants, phosmet is rapidly broken down to non-toxic metabolites. Soil/Environment Rapidly broken down in the soil.