Dulmar Guud

DEET (Ingiriis diethylmethylbenzamide), oo loo soo gaabiyo DEET, magaca kiimikada waa diethyltoluamide, waa buug kiimiko ah oo ka hortaga cayayaanka oo ballaaran. Waxay leedahay saameyn ka hortag ah oo ku saabsan cayayaanka qaniinyada ee deegaanno kala duwan waxayna ka celin kartaa cayayaanka qaniinyada leh. Duqsiyada, duqsiga, duqsiga madow, digaagga, duqsiga deerada, boodada, cayayaanka, kaneecada, duqsiga fardaha, kaneecada, duqsiga ciidda, cayayaanka, duqsiga deggan iyo shilinta.

DEET waxaa soo saartay Waaxda Beeraha ee Mareykanka intii lagu jiray Dagaalkii Labaad ee Adduunka. Badeecadan waxaa loo aqoonsaday inay tahay badeeco ka hortagta kaneecada oo ay isticmaalaan ciidamada Mareykanka sanadkii 1946. Waxaa laga diiwaan geliyay Hay'adda Ilaalinta Deegaanka ee Mareykanka inay tahay cayayaan dile sanadkii 1957 waxaana la bilaabay in loo isticmaalo dadka rayidka ah. Markii hore waxaa loo isticmaali jiray cayayaan dile beeraha. Markii dambe, dowladda Mareykanka waxay codsatay isticmaalkeeda intii lagu jiray dagaallada, gaar ahaan Vietnam iyo Koonfur-bari Aasiya. Sida laga soo xigtay tirakoobka Hay'adda Ilaalinta Deegaanka ee Mareykanka, sannad kasta Chemicalbook Ku dhawaad ​​40% dadka Mareykanka ah waxay isticmaalaan cayayaan dile ay ku jirto DEET, kaas oo ay isticmaalaan qiyaastii 200 milyan oo qof adduunka oo dhan. 40-kii sano ee la soo dhaafay, daraasado ay sameeyeen in ka badan 20,000 oo cutub oo cilmi-baaris ah ayaa xaqiijiyay in DEET ay tahay daawada ugu ammaansan uguna waxtarka badan ee suuqa laga isticmaalo. Daawada ka hortagga cayayaanka ee ballaaran. Hay'adda Caafimaadka Adduunka ayaa sidoo kale ku talineysa in la isticmaalo badeecooyinka ka hortagga cayayaanka ee ay ku jiraan DEET si looga ilaaliyo cayayaanka ka dhasha fayraska. Badanaa waxaa lagu qasaa sunta cayayaanka kale, laakiin sunteeda ayaa la kordhiyaa marka lagu daro sunta cayayaanka ee kaarboonate.

Guryaha DEET

Lambarka CAS: 134-62-3

Qaacidada molecular-ka C12H17NO

Miisaanka molecular-ka 191.27

Lambarka EINECS 205-149-7

Barta dhalaalaysa -45°C

Barta karkaraya 111°C1mmHg

Cufnaanta 0.998g/mL at 20°C (iftiin).

Cufnaanta uumiga 6.7 (Chemicalbookvsair)

Cadaadiska uumiga <0.01mmHg (25°C)

Tusmada Refractive n20/D1.523 (iftiin)

Barta iftiiminta > 230°F

Macluumaadka Xiriirka

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