Cov khoom siv loj tshaj plaws ua los ntawm naphthalene yog npauj tshuaj tua kab , nyob rau hauv daim ntawv ntawm mothballs los yog crystals, thiab chav dej deodorant blocks. Nws kuj yog siv los ua dyes, resins, tawv tanning agents, thiab cov tshuaj tua kab carbaryl carbaryl Carbaryl (1-naphthyl methylcarbamate) yog ib tug tshuaj nyob rau hauv carbamate tsev neeg siv chiefly ua tshuaj tua kab. … Carbaryl yog cov tshuaj tua kab thib peb hauv Tebchaws Meskas rau kev ua vaj tsev, kev ua liaj ua teb, thiab kev tiv thaiv hav zoov thiab thaj chaw thaj chaw. Raws li ib tug kws kho tsiaj, nws yog hu ua carbaril (INN). https://en.wikipedia.org › wiki › Carbaryl
Carbaryl - Wikipedia
Naphthalene ua li cas?
Naphthalene tuaj yeem tsim tawm los ntawm cov thee tar lossis roj av. Distillation thiab fractionation ntawm thee tar yog txheej txheem ntau lawm. … Cov naphthalene ces rov qab los ntawm fractionation, decolorized, thiab purified los ntawm crystallization. Naphthalene ua los ntawm roj av yog li 99% ntshiab.
Naphthalene nyob qhov twg?
Naphthalene yog tsim los ntawm cov roj crude lossis thee tar. Nws tseem yog tsim thaum cov khoom kub hnyiab, yog li naphthalene muaj nyob rau hauv cov pa luam yeeb, tsheb tso tsheb, thiab cov pa taws los ntawm hluav taws hav zoov. Nws yog siv los ua tshuaj tua kab thiab tshuaj tua kab. Naphthalene tau xub sau npe ua tshuaj tua kab hauv Tebchaws Meskas hauv xyoo 1948.
Npaj siv naphthalene yog dab tsi?
Naphthalene siv hauv kev tsim cov yas, resins, fuels, thiab dyes. Nws kuj tseem siv los ua cov tshuaj tua kab fumigant uas ua haujlwm los ntawm kev xa ncaj qha los ntawm cov khoom mus rau hauv cov pa phem. Cov txheej txheem no hu ua sublimation.
Yam khoom twg yog siv los ua cov pob naphthalene?
Lawv yog tsim los ntawm naphthalene flakes los ntawm lub ntsiav tshuaj ua tshuab muaj lub pob zoo li tuag. Cov khoom muaj kev lag luam dav thiab cov nqi peev tsawg. Cov khoom siv raw yog xav tau rau kev tsim khoom Naphthalene Balls yog Naphthalene flakes, camphor, phenol thiab lwm yam.
