Permethrinyog ib hom tshuaj tua kab uas nquag siv, lub npe tshuaj yog ({{{0}} phenoxyphenyl) methyl-( plus )-cis, trans-3-(2,2-dichloroethenyl){{6 }}, 2-dimethylcyclopropanecarboxylate, uas yog tshuaj tua kab organochlorine. Nws yog dawb los yog lub teeb daj crystalline hmoov. Cov solubility hauv dej yog tsawg heev, tsuas yog 0.002 mg / L ntawm 20 degree, tab sis cov solubility hauv cov kuab tshuaj organic yog qhov siab, piv txwv li, solubility hauv cov kuab tshuaj organic xws li ether, toluene, thiab chloroform yog ntau dua 50 g / L. .
Permethrin yog cov tshuaj hluavtaws uas muaj nyob hauv tsev neeg cov tshuaj hu ua cypermethrins. Nws yog ib qho tshuaj tshwj xeeb uas tuaj yeem siv los kho ntau yam kab mob ntawm cov tsiaj, nrog rau cov ntshauv taub hau, cov ntshauv lub cev, qab zib Pine aphids, paj ntoos kab kab, thiab lwm yam. Permethrin kuj tseem siv los tswj cov kab tsuag ntawm qee cov qoob loo, xws li beet armyworm, whitefly, thiab whitefly. Tsis tas li ntawd, Permethrin kuj tau siv dav hauv kev kho hluav taws xob thiab tshuaj tua kab mob ntawm textiles thiab cov khoom siv hauv tsev, nrog rau kev tua kab mob thiab tshuaj tua kab mob hauv kev ua liaj ua teb.
1. Kho cov ntshauv taub hau thiab lub cev:
Permethrin tau siv dav hauv kev kho mob los kho cov ntshauv thiab lub cev. Nws tuaj yeem siv rau hauv kev npaj da dej gel, tshuaj zawv plaub hau, tshuaj pleev thiab lwm yam tshuaj los pab tib neeg tshem tawm cov kab mob ntawm lub taub hau thiab lub cev ntshauv. Permethrin ua haujlwm los ntawm kev tua cov ntshauv kom txo tau cov tsos mob ntawm tus kab mob.
2. Rau tsiaj tua kab mob:
Permethrin tuaj yeem siv los kho cov kab mob cab hauv cov tsiaj xws li pob ntseg hauv dev thiab miv, mange mites, folliculoric mites, thiab ntshauv hauv miv. Permethrin tau ntxiv rau ntau yam khoom siv tshuaj tua kab mob thiab tuaj yeem txo cov kab mob cab ntawm thiab ib puag ncig cov tsiaj.
3. Agricultural tshuaj tua kab mob thiab tshuaj tua kab:
Permethrin kuj tau siv dav hauv kev ua liaj ua teb rau kev tua kab mob thiab tshuaj tua kab. Nws tuaj yeem pab cov neeg ua liaj ua teb nce cov qoob loo thiab tiv thaiv qoob loo. Piv txwv li, Permethrin tuaj yeem siv los tswj cov pob kws borer, whitefly, nplooj cov menyuam thiab lwm yam kab tsuag.
4. Kev tiv thaiv hluav taws kub thiab tiv thaiv corrosion ntawm textiles:
Permethrin tuaj yeem muab ntxiv rau hauv textiles kom tsis txhob muaj khaub ncaws los ntawm hluav taws los yog hluav taws. Nws cov nyhuv fireproof yog qhov zoo kawg li, uas tuaj yeem tiv thaiv cov ntaub los ntawm kev kub hnyiab. Tsis tas li ntawd, Permethrin tseem tuaj yeem tiv thaiv cov ntaub ntawv los ntawm kev tawm tsam los ntawm npauj thiab lwm yam kab, ua rau lub neej ntev ntawm textiles.
5. Kev tiv thaiv hluav taws thiab tiv thaiv corrosion ntawm cov khoom siv hauv tsev:
Permethrin kuj tseem tuaj yeem ntxiv rau cov khoom siv hauv tsev ua hluav taws thiab khaws cia. Piv txwv li, Permethrin tuaj yeem muab ntxiv rau cov tshuaj tiv thaiv ntoo los pab tiv thaiv ntoo los ntawm cov teeb meem xws li npauj, mildew, thiab lwj.
Chemical Properties:
1. Cov khoom ruaj khov: Permethrin yog qhov ruaj khov nyob rau hauv qee yam kev mob thiab tsis yooj yim rau decompose, yog li nws muaj cov khoom zoo heev xws li los nag ntxhua thiab tsis yooj yim rau poob.
2. Toxicity: Permethrin muaj cov tshuaj toxicity tsawg rau cov kab mob siab dua xws li cov tsiaj txhu, tab sis muaj zog tshuaj lom rau cov kab mob qis xws li kab.
3. Reynolds naj npawb: Reynolds tus naj npawb ntawm Permethrin muaj tsawg heev, yog li nws tuaj yeem tsim cov emulsion ntawm dej los txhim kho cov tshuaj tua kab.
4. tus nqi pH: Tus nqi pH ntawm Permethrin muaj qhov zoo tshaj plaws nyob rau hauv nruab nrab lossis me ntsis acidic ib puag ncig.
5. Thermal stability: Permethrin tuaj yeem nyob ntev dua 95 degree, thiab muaj zog thermal stability.
Reaction nature:
1. Cov tshuaj tiv thaiv Photodecomposition: Permethrin molecules muaj ntau pawg methylene, uas yooj yim decomposed los ntawm ultraviolet hluav taws xob, ua rau Permethrin poob nws cov tshuaj tua kab.
2. Cov tshuaj tiv thaiv Hydrolysis: Nyob rau hauv ib puag ncig acidic lossis alkaline, ester daim ntawv cog lus hauv Permethrin molecule yog yooj yim decomposed los ntawm dej, ua rau poob ntawm insecticidal nyhuv ntawm Permethrin.
3. Cov tshuaj tiv thaiv oxidation: Permethrin tau yooj yim oxidized los ntawm oxidants xws li hydrogen peroxide, ua rau muaj kev hloov pauv hauv cov qauv molecular thiab txo cov tshuaj tua kab.
Hauv kev xaus, Permethrin muaj ntau yam kev siv thiab yog cov tshuaj muaj txiaj ntsig zoo. Txawm li cas los xij, nws kuj muaj qee qhov kev mob tshwm sim thiab kev pheej hmoo ntawm kev noj qab haus huv uas yuav tsum tau ua tib zoo tshawb fawb thiab tshuaj xyuas ua ntej siv.
Permethrin yog ib hom tshuaj tua kab uas siv los tua thiab tua kab. Nws yog cov paj hlwb uas nyiam cov kab thiab tua lawv thaum nws ntsib lawv. Permethrin yog Ameslikas tsim los siv rau hauv kev ua liaj ua teb, tab sis tam sim no nws kuj tau siv dav hauv kev ua liaj ua teb hauv tsev thiab cov khoom siv xws li tshuaj tua kab mob rau dev thiab tshuaj tua kab hauv tsev.
Permethrin yog Ameslikas tsim los ntawm British tuam txhab Imperial Chemicals. Nyob rau xyoo 1950, lub tuam txhab dabbled hauv kev tsim DDT (dichlorobenzenetrichloroethane), tab sis thaum DDT cov tshuaj lom neeg ua rau muaj kev txhawj xeeb, lub tuam txhab pib nrhiav lwm cov tshuaj ua lwm txoj hauv kev. Lub sijhawm no, tus kws tshuaj Askiv Askiv Maureen Roberts tau pib tshawb fawb thiab tsim cov tshuaj tua kab amide.
Amide insecticides muaj ib pawg ntawm cov tebchaw hu ua "glyphosate". Ib qho ntawm cov tebchaw tau tsim los ua cov tshuaj antihelminth thiab lwm yam yog cov tshuaj tua kab tshiab thiab zoo heev. Cov tom kawg yog dab tsi niaj hnub no hu ua Permethrin.
Maureen Roberts siv ib qho ntawm cov txheej txheem kev sib cais siab tshaj plaws hauv ntiaj teb, Kev Ua Tau Zoo Ua Kua Dej Chromatography (HPLC) txoj kev sib cais, hauv nws txoj kev tshawb fawb. Los ntawm HPLC, nws muaj peev xwm tau txais ib qho ntshiab compound thiab kawm txog cov neurotoxicity ntawm cov compound. Nyob rau hauv txoj kev tshawb no, nws nrhiav tau ib yam tshiab ntawm compound uas muaj kev cuam tshuam rau lub paj hlwb ntawm cov kab tsuag. Cov compound irritates kab cov hlab ntsha xaus, ua rau cov hlab ntsha tuag tes tuag taw thiab tuag.
Xyoo 1959, Permethrin tau tsim tawm los ntawm Imperial Chemicals, thawj zaug rau kev tiv thaiv kab mob khaub thuas yoov tshaj cum uas hu ua West Asian fever. Permethrin tau txais txiaj ntsig zoo rau nws lub zog siab thiab tsis muaj tshuaj lom. Tsis ntev, cov khoom siv Permethrin suav nrog cov ntaub pua tsev, tshuaj yoov tshaj cum, thiab tshuaj tua kab hauv tsev, ua rau nws muaj kev sib xyaw nrog cov kab dav dav.
Ob peb xyoos tom ntej no, kev siv cov tshuaj permethrin nthuav dav suav nrog kev ua liaj ua teb, kws kho tsiaj, thiab kev noj qab haus huv rau pej xeem. Tsis tas li ntawd, vim nws tsis muaj tshuaj lom, Permethrin tau siv dav hauv tsev neeg thiab cov khoom siv niaj hnub xws li khaub ncaws, tsev pheeb suab ntaub thiab kaus mom los muab kev tiv thaiv ntxiv.
Nyob rau hauv luv luv, lub discovery keeb kwm ntawm Permethrin yog ib tug ntev lub sij hawm ntawm kev tshawb fawb thiab discovery. Los ntawm kev tshawb fawb thiab kev tshawb fawb thev naus laus zis, tib neeg tau tshawb pom ib hom tshuaj tua kab tshiab, uas tau siv dav hauv tib neeg kev nyob thiab chaw ua haujlwm.