Qhov sib txawv tseem ceeb ntawm toluene thiab xylene yog tias toluene muaj ib pawg methyl txuas rau lub nplhaib benzene whereas xylene muaj ob pawg methyl txuas rau lub nplhaib benzene.
Ob leeg toluene thiab xylene yog cov organic tebchaw uas muaj cov qauv tshuaj zoo sib xws. Ob leeg no yog cov tshuaj tsw qab uas muaj benzene rings thiab txuas methyl pawg (s).
Toluene yog dab tsi?
Toluene yog cov organic compound uas muaj cov tshuaj formula C7H8 Lub npe IUPAC rau toluene yog methylbenzene. Nws muaj lub nplhaib benzene txuas nrog methyl pawg. Cov molar loj ntawm no compound yog hais txog 92.14 g / mol. Nyob rau ntawm chav tsev kub thiab siab, nws zoo nkaus li cov kua tsis muaj xim uas muaj cov ntxhiab tsw zoo li benzene.
Daim duab 01: Cov Qauv Tshuaj ntawm Toluene
Lub ntsiab lus kub ntawm toluene yog li 111 ° C. Nws yog ib tug heev flammable kua compound. Nws raug suav hais tias yog benzene derivative. Nws tuaj yeem dhau los ua cov tshuaj tsw qab electrophilic aromatic hloov pauv. Toluene muaj cov tshuaj tiv thaiv zoo heev vim muaj cov pab pawg methyl. Methyl pawg yog cov pab pawg zoo tshaj tawm cov hluav taws xob. Yog li, pawg methyl tam sim no nyob rau hauv toluene molecule pab ua kom lub nplhaib benzene ntau electron nplua nuj. Li no, nws tuaj yeem faib cov khoom siv hluav taws xob yooj yim nrog electrophiles.
Toluene muaj txiaj ntsig zoo hauv cov tshuaj tiv thaiv organic. Nws tuaj yeem siv los ua cov khoom pib los tsim benzene. Nws muab cov benzene molecule nrog rau methane (CH4) molecule ua cov khoom kawg. Toluene yog cov kuab tshuaj zoo uas feem ntau siv los tsim cov xim. Nws yog qee zaum siv los ua roj vim nws cov nplaim hluav taws kub. Txawm li cas los xij, toluene raug suav tias yog tshuaj lom neeg.
YXylene yog dab tsi?
Xylene yog ib qho organic compound uas muaj cov tshuaj formula (CH 3)2C6 H4 Nws poob rau hauv qeb ntawm dimethylbenzene vim nws muaj benzene nrog ob pawg methyl txuas. Tsis tas li ntawd, qhov sib xyaw no muaj peb isomers uas nws txoj haujlwm ntawm methyl pawg ntawm lub nplhaib benzene txawv ntawm ib leeg. Tag nrho peb cov isomers no tshwm sim raws li cov kua dej tsis muaj xim, flammable; Ntau qhov tseeb, qhov sib xyaw ntawm cov isomers no hu ua "xylenes".
Daim duab 02: Xylene Structure
Kev tsim cov xylene tuaj yeem ua tiav los ntawm kev hloov pauv catalytic thaum lub sijhawm roj av refining lossis los ntawm cov pa roj carbonization thaum lub sijhawm tsim cov roj coke. Txawm li cas los xij, kev lag luam, xylene ntau lawm txoj kev peb siv yog methylation ntawm toluene thiab benzene.
Xylene tseem ceeb ua cov kuab tshuaj tsis muaj polar. Nws yog, txawm li cas los xij, kim thiab sib piv tshuaj lom. Qhov tsis muaj polar xwm yog vim qhov sib txawv ntawm electronegativity tsawg ntawm C thiab H. Yog li ntawd, xylene nyiam yaj lipophilic tshuaj zoo.
Raws li qhov chaw uas ob pawg methyl txuas nrog lub nplhaib benzene, muaj peb hom xylene li o-xylene, p-xylene thiab m-xylene. Peb lo lus no sawv cev rau ortho, para thiab meta txoj haujlwm ntawm ob pawg methyl.
Qhov txawv ntawm Toluene thiab Xylene yog dab tsi?
Toluene thiab xylene yog cov tshuaj tsw qab organic. Qhov sib txawv tseem ceeb ntawm toluene thiab xylene yog tias toluene muaj ib pawg methyl txuas rau lub nplhaib benzene thaum xylene muaj ob pawg methyl txuas rau lub nplhaib benzene.
Cov lus hauv qab no qhia ntau qhov sib txawv ntsig txog qhov sib txawv ntawm toluene thiab xylene.
Summary – Toluene vs Xylene
Toluene thiab xylene yog cov tshuaj tsw qab organic. Qhov sib txawv tseem ceeb ntawm toluene thiab xylene yog tias toluene muaj ib pawg methyl txuas rau lub nplhaib benzene thaum xylene muaj ob pawg methyl txuas rau lub nplhaib benzene.
