Tirohanga Whānui

Ko te DEET (Ingarihi diethylmethylbenzamide), he whakarāpopototanga ko DEET, ko te ingoa matū ko diethyltoluamide, he rongoā ārai pepeke whānui. He pānga ārai pepeke tōna ki ngā momo pepeke ngau i roto i ngā taiao rerekē, ā, ka taea te ārai i ngā pepeke wero. Ko ngā namu, ngā namu pītiti, ngā namu pango, ngā namu tītī, ngā namu tia, ngā puruhi, ngā namu hōiho, ngā waeroa, ngā namu onepu, ngā namu tītī, ngā namu pumau me ngā tītī.

I whakawhanakehia te DEET e te Tari Ahuwhenua o Amerika i te Pakanga Tuarua o te Ao, ā, i whakamanahia hoki e ia he patene. I tohua te hua hei hua ārai namu mō te whakamahi a te ope taua o Amerika i te tau 1946. I rēhitatia ki te Tari Tiaki Taiao o Amerika hei ārai pepeke i te tau 1957, ā, ka tīmata te whakamahi mō te whakamahinga a te iwi whānui. I te tuatahi i whakamahia hei patu pepeke i ngā pāmu. Nō muri mai, ka tono te kāwanatanga o Amerika kia whakamahia i ngā wā pakanga, inā koa i Vietnam me te Tonga-mā-rāwhiti o Āhia. E ai ki ngā tatauranga a te Tari Tiaki Taiao o Amerika, i ia tau, tata ki te 40% o ngā Amerikana e whakamahi ana i te ārai pepeke kei roto te DEET, e whakamahia ana e te 200 miriona tāngata puta noa i te ao. I roto i ngā tau 40 kua pahure ake nei, kua whakamātauhia e ngā rangahau a te neke atu i te 20,000 ngā wae rangahau ko te DEET te ārai pepeke haumaru me te tino whai hua i te mākete. He ārai whānui. E taunaki ana hoki te Whakahaere Hauora o te Ao kia whakamahia ngā hua ārai pepeke kei roto te DEET hei tiaki i ngā pepeke kawe-werewere. He maha ngā wā ka konatunatua ki ētahi atu patu pepeke, engari ka nui ake tōna paitini ina konatunatua ki ngā patu pepeke carbamate.

Ngā Āhuatanga DEET

Nama CAS 134-62-3

Te tātai ngota C12H17NO

Taumaha ngota 191.27

EINECS Nama 205-149-7

Te ira rewa -45°C

Te pūwāhi koropupū 111°C1mmHg

Kiato 0.998g/mL i te 20°C (i te rama)

Te mātotoru o te kohu 6.7 (Chemicalbookvsair)

Pēhanga kohu <0.01mmHg (25°C)

Taupū whakaata n20/D1.523 (lit.)

Pūwāhi mura > 230°F

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