Wopanga mtengo wabwino stearic acid Cal: 57-11-4

Stearic acid, (mafakitale a mafakitale) Stearic acid ndi amodzi mwa mafuta angapo ochulukirapo owoneka bwino ophatikizika mafuta ndi mafuta. Amaperekedwa mafuta a nyama, mafuta ndi mitundu ina ya mafuta masamba monga ma glycerides. Mafuta awa, pambuyo pa hydrolysis, amatulutsa acid.
Stearic acid ndi acid acid omwe alipo kwambiri mwachilengedwe ndipo ali ndi mankhwala ambiri a Carboxyylic Acids. Pafupifupi mitundu yonse yamafuta ndi mafuta imakhala ndi kuchuluka kwa osakhazikika ndi zomwe zimapezeka ndi mafuta omwe ali okwera kwambiri. Mwachitsanzo, zomwe zili mu batala zimatha kufikira 24% pomwe zomwe zili mu masamba mafuta zimakhala zotsika ndi mtengo mu 0,8% ndi mafuta mu kanjedza 6%. Komabe, zomwe zili mu cocoa zimatha kukhala zapamwamba ngati 34%.

Pali njira ziwiri zazikuluzikulu zopangira mafakitale a acid, zowerengera komanso njira yokakamiza. Onjezani wothandizira hydrojenited mafuta, kenako hydrolyze kuti mupatse mafuta acid acid, pitaninso kusamba ndi madzi, distillation, yopepuka kuti ithe kupeza zinthu zomalizidwa ndi glycerolol monga chotupa.
Opanga ambiri opanga nyama amagwiritsa ntchito mafuta a nyama popanga. Mitundu ina yaukadaulo yopanga imapangitsa kuti zisawonongeke mafuta a asidi omwe amabweretsa fungo lolimbikitsa pa nthawi ya pulasitiki ndikutentha kwambiri. Ngakhale kuti fungo lake silakuti palibe poizoni koma azikhala ndi zovuta zina pamakhalidwe ndi zachilengedwe. Mtundu woyipa kwambiri wa acidic acidic amatenga mafuta a masamba ngati zida zopangira, njira zopangira zimakhala zapamwamba; Omwe amapanga acid ndi okhazikika, katundu wabwino wamafuta ndi fungo lalifupi pakugwiritsa ntchito.
Stearic acid imagwiritsidwa ntchito popanga opanga matearateras monga sodium stearate, calcium stearate, aluminium stearate, ndi potaziyamu osakhazikika. Mchere wa sodium kapena potaziyamu wa stearic acid ndi gawo la sopo. Ngakhale kuti sodium stearate imakhala ndi mphamvu zochepa kuposa sodium kaltali, koma kukhalapo kwake kungakulitse mawonekedwe a sopo.
Tengani batala ngati zopangira, pitani kudzera mwa sulfuric acid kapena njira yolimbikitsira kuti muchepetse kuwonongeka. Mafuta amoyo aulere anali mutu wa njira yokakamiza madzi ndikuchotsa palmitic acid ndi oleic acid pa 30 ~ 40 ℃, kenako kusungunuka ku ethallate kapena magnesium acetate omwe amasanja. Kenako onjezani kuchuluka kwa sulfuric acid kuti apeze ufulu wa asidi waulere, fyuluta ndikuwutenga, ndikukhazikitsanso kulira kwa ethanol kuti mupeze zicita zoyera.