Cov txheej txheem:
- Puas naphthalene balls lom rau tib neeg?
- Koj ua li cas naphthalene pob hauv tsev?
- Puas yog naphthalene pob ua los ntawm cov thee?
- Dab tsi ua rau cov pob naphthalene?
Video: Npaj naphthalene ua li cas?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Naphthalene flakes yog pub rau hauv lub nkojnyob rau hauv qhov ntsuas kub ntawm 88 ° C thiab tus agitator nplawm cov khoom. Thaum naphthalene melts, lwm cov khoom xyaw xws li paraffin wax, camphor thiab lwm yam ntxiv thiab sib tov kom huv si. Cov liquefied loj yog pub rau hauv Suav teb pob xovxwm lossis txhuas pwm.
Puas naphthalene balls lom rau tib neeg?
tshuaj nyob rau hauv npauj npaim yog lom rau tib neeg thiab tsiaj. Tib neeg raug cov tshuaj hauv cov npauj npaim los ntawm kev nqus cov pa. … Kev kis kab mob ntxiv tuaj yeem ua rau lub siab thiab lub raum puas.
Koj ua li cas naphthalene pob hauv tsev?
How to make homemade mothballs
- Yam koj xav tau. 20 cm muslin. …
- Qhia. Txiav muslin rau hauv 20x20cm squares.
- Mix, faib, khi. Sib tov tshuaj ntsuab thiab ginseng nyob rau hauv ib lub tais. …
- Thaum hloov. Hloov koj cov npauj npaim hauv tsev txhua lub caij (caij nplooj ntoos hlav, caij ntuj sov, caij nplooj zeeg) kom ntseeg tau tias lawv muaj zog txaus los tiv thaiv koj cov khaub ncaws los ntawm npauj pesky.
Puas yog naphthalene pob ua los ntawm cov thee?
Naphthalene npas kuj hu ua npauj npas. Yog li, cov pob naphthalene tau los ntawm coal tar thiab siv los ua npauj tua. Yog li, qhov kev xaiv raug yog C. Nco tseg: Tsis txhob nkag siab qhov sib txawv ntawm cov tshuaj tua kab mob.
Dab tsi ua rau cov pob naphthalene?
Naphthalene raug tuaj yeem tshwm sim yog tias koj nqus pa uas muaj naphthalene, yog tias koj haus cov kua uas muaj naphthalene, lossis yog cov khoom uas muaj naphthalene raug kov lossis noj tsis raug. Nco ntsoov tias koj tuaj yeem ua pa hauv naphthalene vapors los ntawm cov khaub ncaws uas tau khaws cia rau hauv npauj npaim.
Pom zoo:
Yuav ua li cas siv npaj npaj chg?
Tsis txhob siv cov ntaub rau thaj tsam ntawm daim tawv nqaij tawg, qhov txhab qhib, lossis kev phais (kev phais) Ntxuav koj txhais tes nrog xab npum thiab dej sov los yog tshuaj ntxuav tes uas muaj cawv. Siv 2% CHG ntaub los so koj cov tawv nqaij.
Puas yog naphthalene ib qho tshuaj?
Naphthalene yog ib qho organic compound nrog formula C10H8. Nws yog qhov yooj yim tshaj plaws polycyclic aromatic hydrocarbon, thiab yog cov dawb crystalline khoom nrog cov yam ntxwv tsw uas pom tau ntawm cov concentrations tsawg li 0.08 ppm los ntawm huab hwm coj .
Qhov txawv ntawm kev npaj thiab kev npaj yog dab tsi?
Txoj kev npaj thiab npaj yog sib txawv ntawm cov lus ntawm tib lo lus. Organize yog qhov nyiam sau ntawv hauv Teb Chaws Asmeskas thiab Canada, thiab kev npaj muaj ntau dua sab nraum North America. Qhov no txuas mus rau tag nrho cov lo lus derivatives, suav nrog organised/organised, organize/organising, and organization/organisation .
Puas yog naphthalene ib qho kua qaub?
PKa's ntawm benzoic acid thiab 2-naphthol yog 4.17 thiab 9.5, ntsig txog, thaum naphthalene yog ib qho nruab nrabVim benzoic acid yog acidic ntau dua 2-naphthol, Lub hauv paus tsis muaj zog, sodium bicarbonate, yuav muaj peev xwm tshem tawm benzoic acid's acidic hydrogen .
Koj yuav tsum siv naphthalene?
Naphthalene yog ib qho muaj zog tshaj plaws neurotoxin, nyob rau sab saum toj ntawm carcinogenicRaws li naphthalene hloov ntawm cov khoom mus rau roj, cov pa tawm tau kawm thiab pom tias tso cov pa phem ntau dua. Kev raug naphthalene tas li tuaj yeem ua rau muaj kev nyiam rau cov qe ntshav liab kom tawg thiab tuaj yeem ua rau muaj ntshav tsis txaus .
