Qhov sib txawv tseem ceeb ntawm propylene glycol thiab glycerin yog tias propylene glycol compound muaj ob pawg hydroxyl ib molecule, whereas glycerin muaj peb pawg hydroxyl ib molecule.
Propylene glycol thiab glycerin feem ntau zoo tib yam vim lawv tshwm sim tsis muaj xim, tsis muaj ntxhiab, qab zib, thiab cov khoom qab zib. Txawm hais tias lawv qhia qee yam ntawm lub cev, lawv muaj cov yam ntxwv tshwj xeeb. Txawm li cas los xij, propylene glycol yog tshuaj lom, thiab nws yog ib qho tseem ceeb heev los txheeb xyuas ob lub tebchaw no kom raug ua ntej siv.
YPropylene Glycol yog dab tsi?
Propylene glycol yog cov kua nplaum thiab tsis muaj xim uas yuav luag tsis muaj ntxhiab thiab muaj qhov tsw qab qab. Nws muaj cov tshuaj formula C3H8O2 Muaj ob pawg cawv hauv propylene glycol molecules. Muaj peb carbon atoms nyob rau hauv ib tug saw thiab ob pawg cawv nrog rau ob ntawm cov pa roj carbon atoms. Yog li ntawd, peb tuaj yeem categorize nws li diol. Tsis tas li ntawd, propylene glycol yog miscible nrog ntau cov kuab tshuaj xws li dej, acetone, thiab chloroform.
Propylene glycol tuaj yeem ua rau ntawm qhov loj, feem ntau yog rau kev tsim cov polymers. Ntawm kev lag luam nplai, cov khoom no yog tsim los siv propylene oxide. Cov tshuaj no tau siv hauv kev lag luam zaub mov, kev tsim tshuaj, thiab kev tsim kho kom zoo nkauj. Nws yog ib qho tseem ceeb raws li cov kuab tshuaj rau ob qho tib si ntuj thiab hluavtaws, raws li ib tug humectant, raws li ib tug freezing point depressant, raws li ib tug cab kuj los yog lub hauv paus nyob rau hauv cov tshuaj pleev ib ce, rau cuab thiab khaws cov kab, thiab lwm yam.
Glycerin yog dab tsi?
Glycerin lossis glycerol yog ib qho yooj yim polyol compound uas muaj cov tshuaj formula CHCH2CH2(OH)3 Cov tshuaj no tsis muaj xim, tsis muaj ntxhiab, thiab tshwm sim raws li cov kua nplaum uas muaj qab zib thiab nws kuj tsis muaj tshuaj lom. Cov pob txha ntawm cov tshuaj no yog tsim los ntawm lipids hu ua glycerides.
Glycerin muaj cov tshuaj tua kab mob thiab tshuaj tua kab mob. Yog li ntawd, nws yog dav siv raws li FDA-pom zoo qhov txhab thiab kho kub hnyiab. Tsis tas li ntawd, nws muaj txiaj ntsig zoo li kab lis kev cai nruab nrab ntawm kab mob thiab ua tus cim zoo los ntsuas kab mob siab. Tsis tas li ntawd, glycerin feem ntau yog siv los ua cov khoom qab zib hauv kev lag luam zaub mov thiab ua cov tshuaj humectant hauv cov tshuaj formulations. Txij li thaum nws muaj peb pawg hydroxyl, nws yog miscible nrog dej thiab kuj muaj hygroscopic xwm.
Peb tuaj yeem tau txais glycerin los ntawm cov nroj tsuag thiab tsiaj txhu uas nws tshwm sim li triglycerides, esters ntawm glycerol nrog rau cov saw ntev carboxylic acids, thiab lwm yam. Muaj cov txheej txheem hydrolysis, saponification, lossis transesterification uas tuaj yeem siv los ua cov khoom lag luam. glycerol thiab fatty acid derivative triglyceride.
Qhov txawv ntawm Propylene Glycol thiab Glycerin yog dab tsi?
Propylene glycol thiab glycerin yog cov organic tebchaw tseem ceeb. Lawv muaj cov qauv zoo sib xws thiab cov khoom. Qhov sib txawv tseem ceeb ntawm propylene glycol thiab glycerin yog tias propylene glycol compound muaj ob pawg hydroxyl ib molecule, hos glycerin muaj peb pawg hydroxyl ib molecule. Qhov tseem ceeb tshaj, propylene glycol yog tshuaj lom, thaum glycerin tsis lom. Propylene glycol yog siv los nqus dej ntxiv thiab tswj cov dej noo hauv qee yam tshuaj, tshuaj pleev ib ce, thiab khoom noj khoom haus, thaum glycerin yog siv los ua cov khoom qab zib hauv kev lag luam zaub mov, raws li kab lis kev cai nruab nrab, siv raws li FDA pom zoo qhov txhab thiab kho kub hnyiab, lwm.
Cov ntawv qhia hauv qab no nthuav tawm qhov sib txawv ntawm propylene glycol thiab glycerin hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Propylene Glycol vs Glycerin
Propylene glycol yog cov organic compound uas muaj cov tshuaj formula C3H8O2, thaum glycerol yog ib qho yooj yim polyol compound uas muaj cov tshuaj formula CHCH2CH2(OH)3 Qhov sib txawv tseem ceeb ntawm propylene glycol thiab glycerin yog tias propylene glycol compound muaj ob pawg hydroxyl ib molecule, hos glycerin muaj peb pawg hydroxyl ib molecule.
