Isopropanol Boiling Point: Txheeb xyuas kom ntxaws thiab siv
Isopropanol, tseem hu ua isopropyl cawv lossis 2-propanol, yog cov organic hnyav uas siv dav hauv tshuaj, tshuaj thiab lub neej txhua hnub. Boiling point yog qhov tseem ceeb heev thaum tham txog cov khoom ntawm Isopropanol. Kev nkag siab qhov tseem ceeb ntawm cov ntsiab lus kub ntawm isopropanol tsis tsuas yog pab txhim kho nws cov ntawv thov kev lag luam, tab sis kuj tseem muaj kev nyab xeeb hauv kev ua haujlwm hauv chav kuaj.
Basic Properties thiab Structure ntawm Isopropyl Cawv
Isopropyl cawv muaj cov mis mos molecular C₃H₈O thiab belongs rau pawg ntawm cawv. Hauv nws cov qauv molecular, pawg hydroxyl (-OH) txuas nrog cov pa roj carbon thib ob, thiab cov qauv no txiav txim siab lub cev thiab tshuaj lom neeg ntawm isopropanol. Raws li cov kuab tshuaj nruab nrab nruab nrab, isopropyl cawv yog miscible nrog dej thiab ntau cov kuab tshuaj organic, uas ua rau nws zoo heev ntawm kev yaj thiab diluting ntau yam tshuaj.
Lub cev tseem ceeb ntawm Isopropyl Cawv Boiling Point
Isopropyl cawv muaj qhov kub ntawm 82.6 ° C (179 ° F), ntsuas ntawm tus qauv atmospheric siab (1 atm). Qhov kub kub no yog tshwm sim los ntawm hydrogen bonding rog ntawm isopropyl cawv molecules. Txawm hais tias isopropanol muaj qhov hnyav molecular me me, muaj cov pab pawg hydroxyl hauv cov molecule ua rau tsim cov hydrogen bonds ntawm cov molecules, thiab cov hydrogen bonding no txhim kho cov kev nyiam ntawm intermolecular, yog li nce qhov kub.
Piv nrog rau lwm cov tebchaw ntawm cov qauv zoo sib xws, xws li n-propanol (qhov kub ntawm 97.2 ° C), isopropanol muaj qhov kub kub tsawg. Qhov no yog vim txoj hauj lwm ntawm pawg hydroxyl nyob rau hauv isopropanol molecule uas ua rau tsis muaj zog intermolecular hydrogen bonding, ua rau nws volatile.
Kev cuam tshuam ntawm Isopropyl Cawv Boiling Point ntawm Kev Siv Khoom Siv
Tus nqi qis ntawm qhov boiling point ntawm isopropyl cawv ua rau nws zoo heev nyob rau hauv industrial distillation thiab rectification. Vim tias nws qhov kub tsis tshua muaj kub, thaum ua kev sib cais distillation, isopropanol tuaj yeem sib cais zoo ntawm qhov kub thiab txias, txuag hluav taws xob. Isopropanol yog volatile ntawm qhov kub thiab txias, uas ua rau nws dav siv nyob rau hauv coatings, tshuaj ntxuav thiab tshuaj tua kab mob. Nyob rau hauv cov ntaub ntawv no, isopropyl cawv cov evaporation sai sai tshem tawm cov dej saum npoo av thiab roj yam tsis muaj residue.
Boiling Point Considerations for Isopropyl Alcohol in Laboratory Operations
Lub boiling point ntawm isopropyl cawv kuj yog ib qho tseem ceeb hauv chav kuaj. Piv txwv li, thaum ua cov tshuaj tiv thaiv cua sov los yog cov kuab tshuaj rov qab, paub txog qhov kub ntawm isopropyl cawv tuaj yeem pab cov kws tshawb fawb xaiv cov xwm txheej kom tsis txhob muaj cua sov thiab cov kuab tshuaj ntau dhau. Lub ntsiab lus qis qis kuj txhais tau hais tias isopropanol yuav tsum tau muab khaws cia thiab siv nrog kev saib xyuas kom tsis txhob muaj kev poob qis thiab ua haujlwm nyob rau hauv qhov chaw muaj cua zoo kom muaj kev nyab xeeb.
Xaus
Kev nkag siab txog qhov kub ntawm isopropanol yog qhov tseem ceeb rau nws siv hauv kev lag luam thiab chaw kuaj mob. Los ntawm kev nkag siab txog cov qauv molecular thiab hydrogen bonding ntawm isopropanol, nws tus cwj pwm nyob rau hauv ntau yam mob tuaj yeem kwv yees tau zoo dua thiab tswj tau. Hauv cov txheej txheem kev lag luam, cov yam ntxwv kub kub ntawm isopropanol tuaj yeem siv los ua kom zoo dua kev siv hluav taws xob thiab nce kev tsim khoom. Nyob rau hauv lub chaw soj nstuam, noj mus rau hauv tus account lub boiling point ntawm isopropanol ua kom lub du khiav ntawm kev sim thiab kev nyab xeeb ntawm kev khiav hauj lwm. Yog li ntawd, lub boiling point ntawm isopropanol yog ib qho tseem ceeb parameter uas yuav tsum tsis txhob ignored nyob rau hauv ob qho tib si tshuaj ntau lawm thiab kev tshawb fawb.