Glyoxylic acid thiab glycolic acid yog ob qhov sib txawv ntawm cov organic sib txuas nrog qhov sib txawv ntawm cov qauv tshuaj, khoom siv thiab kev siv. Nov yog lawv qhov sib txawv tseem ceeb
Glyoxylic acid, tseem hu ua acetal, yog aldehyde acid nrog lub nplhaib benzene. Nws cov mis molecular yog C2H303 thiab nws qhov hnyav molecular yog 59.05. Nws yog dej heev -soluble thiab tuaj yeem tov nrog ntau cov organic thiab inorganic ntsev los tsim cov kev daws teeb meem. Nws feem ntau yog siv los ua ib qho chaw kuaj reagent, feem ntau yog siv los ua cov organic tebchaw thiab npaj ntau yam kev daws teeb meem.
Glycolic acid
Glycolic acid yog cov organic acid tsim los ntawm kev hloov ntawm GOA. Nws cov mis molecular yog C2H402 thiab nws qhov hnyav molecular yog 60.05. Nws kuj yog dej heev -soluble. Glycolic acid muaj ntau yam kev siv, feem ntau ntawm cov uas yog raws li ib tug niaj hnub tshuaj nruab nrab. Nws yog dav siv nyob rau hauv kev tsim cov tshuaj zawv plaub hau, txias, detergent thiab lwm yam khoom, thiab tseem siv tau los npaj cov ntxhia ntsev, thiab lwm yam.
Glycolic acid is formed by the change of GOA, and the change equation is: C2H303+H20->C2H402+H30+. Thaum lub sij hawm cov tshuaj tiv thaiv, nws yog thawj zaug tov nrog dej thiab ces rhuab, thiaj li hais tias glycolic acid yuav decompose rau glycolic acid thiab H30+, thiab nws tus kheej yuav decomposed kiag li thiab ploj mus thaum lub sij hawm cua sov txheej txheem. Qhov ntsuas kub ntawm cov tshuaj tiv thaiv no tuaj yeem ntsuas los ntawm qhov ntsuas kub thiab qhov siab ntawm chav tsev, yog li tau txais cov xwm txheej thermodynamic ntawm cov tshuaj tiv thaiv no, uas yog, qhov ntsuas kub zoo tshaj plaws.
Hauv kev tsim khoom tiag tiag, qhov kub thiab siab xav tau rau cov tshuaj tiv thaiv ntawm kev hloov GOA rau hauv glycolic acid feem ntau tswj tsis pub dhau 25℃thiab 1 atm. Yog tias lub sijhawm tshuaj tiv thaiv ntev dhau lawm, qhov ua tau zoo yuav ploj mus thiab tiam ntawm glycolic acid yuav cuam tshuam. Thaum GOA deteriorates thiab condenses rau hauv ib qho khoom, cov cua txaus yuav tsum tau tswj xyuas, txwv tsis pub cov tshuaj tiv thaiv kev hloov pauv GOA rau hauv glycolic acid yuav raug txo, yog li ua rau cov khoom zoo ntawm glycolic acid.
Yog li, glyoxylic acid thiab glycolic acid tsis yog tib yam. Cov saum toj no yog lub hauv paus ntsiab lus ntawm kev hloov pauv ntawm GOAto tsim glycolic acid thiab cov txheej txheem tseem ceeb ntawm yuav ua li cas tswj cov tshuaj tiv thaiv hauv kev tsim khoom tiag tiag.
