Hexane muaj qhov kub ntawm 69 Celsius thiab freezing point ntawm -95 Celsius tab sis koj cov roj yuav nyob ze. Sim ua kom khov cov qauv, thiab ib zaug khov ces tawm ntawm chav tsev kub (koj yuav muaj hmoo) lossis koj tuaj yeem tshem tawm cov feem.
Yuav ua li cas thiaj tshem tau H roj?
Rau kev tshem tawm cov roj los ntawm cov organic compound ntxuav nws nrog n-hexane lossis tsiaj-ether raws li cov kuab tshuaj tsawg dua polar. Koj tuaj yeem siv n-hexane lossis petrelum-ether ua cov kuab tshuaj tsawg dua rau kev tshem cov roj.
Yuav ua li cas yog tias koj tau txais hexane ntawm koj daim tawv nqaij?
Kev mob ntsws hnyav hu ua mob ntsws tuaj yeem tshwm sim yog tias cov kua n-hexane tau nqus tau ncaj qha rau hauv lub ntsws, thaum nws siv lub tank los yog nqus cov ntuav tom qab nqos n-hexane. Kev sib cuag ntawm daim tawv nqaij yuav ua rau khaus, liab, hlwv thiab kub hnyiab ntawm daim tawv nqaij Ntev ntev ntawm daim tawv nqaij tuaj yeem ua rau ziab thiab tawg.
Yuav ua li cas yog tias koj ua pa hauv hexane?
Hexane yog siv los rho cov roj uas siv tau los ntawm cov noob thiab zaub, ua cov kuab tshuaj tshwj xeeb, thiab ua cov tshuaj ntxuav. Mob (lub sij hawm luv luv) inhalation ntawm tib neeg mus rau theem siab ntawm hexane ua rau mob me hauv nruab nrab paj hlwb (CNS), xws li kiv taub hau, giddiness, me ntsis xeev siab, thiab mob taub hau
Hexane tshem tawm ntawm roj li cas?
Nyob rau hauv SE txheej txheem, cov roj noob tau ntxuav nrog hexane, tom qab ntawd cov hexane raug cais los ntawm roj los ntawm evaporation thiab distillation [2]. Hexane tau dav siv rau cov roj rho tawm vim tias cov roj rov qab tau yooj yim, nqaim qhov taw qhia (63-69 ° C) thiab muaj peev xwm solubilizing zoo heev [3].
