Propylene glycol yog ib yam kua tsis muaj xim, tsis muaj ntxhiab, me ntsis nplaum nrog cov qauv tuab dua dej me ntsis. Nws yuav luag tsis muaj saj thiab yog ib yam khoom noj khoom haus uas tau tsim los ntawm tshuaj lom neeg. Ib yam li ethanol, nws yog ib yam khoom muaj cawv.

Tsis tas li ntawd xwb, ua ib yam khoom siv organic solvent, nws tuaj yeem yaj qee cov organic solutes zoo dua li dej thiab tseem tuaj yeem khaws cov dej noo zoo. Vim yog cov khoom siv tshuaj lom neeg tshwj xeeb no, nws yog siv dav hauv cov tshuaj pleev ib ce. Propylene glycol feem ntau siv tau ua cov tshuaj moisturizer, softener, solvent, thiab lwm yam, thiab muaj cov txiaj ntsig zoo heev rau kev noo noo thiab kev siv. Nws tuaj yeem siv rau yuav luag txhua yam tshuaj pleev ib ce, tshwj xeeb tshaj yog dej, tshuaj pleev, tshuaj pleev, lub ntsej muag lub ntsej muag thiab lwm yam khoom.

Ntxiv rau qhov chaw ua khoom siv pleev ib ce, nws kuj tseem ceeb heev rau hauv thaj chaw ua zaub mov. Nws paub peb, tab sis peb tsis tshua mloog nws. Raws li "GB 2760-2014 National Food Safety Standard - Food Additive Usage Standard", cov haujlwm ntawm propylene glycol yog: stabilizer, coagulant, anti-caking agent, defoaming agent, emulsifier, moisture retaining agent, thiab thickener.

Yog li ntawd, nws feem ntau siv ua cov khoom noj emulsifier kom ntxiv rau cov mov ci, butter thiab lwm yam khoom. Tsis tas li ntawd, propylene glycol feem ntau siv rau hauv kev ua npias thiab cov txheej txheem rho tawm ua cov kuab tshuaj rau cov tshuaj tsw qab.

Ntxiv rau, rau cov phooj ywg uas nyiam ci, propylene glycol yog cov khoom siv feem ntau, uas tuaj yeem pab cov ncuav qab zib kom tau txais qhov saj zoo dua thiab saj zoo dua.

Raws li cov qauv hauv tebchaws, kev noj propylene glycol kom muaj kev nyab xeeb ua raws li cov qauv uas tau teeb tsa los ntawm International Joint Expert Group on Food Additives, uas yog, kev noj txhua hnub yuav tsum tsis pub tshaj 25 mg ib kilogram ntawm qhov hnyav ntawm lub cev.

Rau ib tus neeg laus uas hnyav 70 kg, qhov siab tshaj plaws txhua hnub noj tsis pub ntau tshaj 1.75 g. Tam sim no, hauv kev tsim khoom noj khoom haus pastry xws li ncuav mog qab zib, thaum siv propylene glycol ua ib qho khoom ntxiv, txoj hauv kev uas tau txais yuav yog qhov tseeb tias cov ntsiab lus tsis pub tshaj 3 grams ib kilogram ntawm cov khoom noj.

Propylene glycol tuaj yeem raug pom zoo siv ua cov khoom noj khoom haus ntxiv thiab tau dhau qhov kev ntsuam xyuas kev nyab xeeb nruj heev. Raws li "cov xwm txheej siv thiab kev noj haus raws li tus qauv", "kev noj mus sij hawm ntev" yuav tsis ua rau muaj kev phom sij rau kev noj qab haus huv.

cov khoom siv tshuaj lom neeg

Propylene glycol
CAS: 57-55-6
Cov mis tshuaj molecular C3H8O2
qhov hnyav molecular 76.09
Tus lej EINECS 200-338-0
Melting point -60 ° C (lit.)
Kub taw tes 187 ° C (lit.)
Qhov Ceev 1.036 g/mL ntawm 25 °C (lit.)
Qhov ceev ntawm cov pa roj 2.62 (piv rau huab cua)
Lub zog ua pa 0.08 hli Hg (20 °C)
Refractive index n20 /D 1.432 (lit.)

Cov Ntaub Ntawv Tiv Tauj

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