Wopanga Mtengo Wabwino Stearic asidi CAS:57-11-4

Stearic acid, (gawo la mafakitale) Stearic acid ndi amodzi mwamafuta ambiri amtali wautali omwe amakhala ndi mafuta ndi mafuta.Imaperekedwa mumafuta anyama, mafuta ndi mitundu ina yamafuta amasamba komanso mawonekedwe a glycerides.Mafutawa, pambuyo pa hydrolysis, amapanga stearic acid.
Stearic acid ndi mafuta acid omwe amapezeka kwambiri m'chilengedwe ndipo ali ndi mankhwala ambiri a carboxylic acid.Pafupifupi mitundu yonse yamafuta ndi mafuta amakhala ndi kuchuluka kwa stearic acid ndipo zomwe zili mumafuta anyama zimakhala zochulukirapo.Mwachitsanzo, zomwe zili mu batala zimatha kufika 24% pomwe zomwe zili mumafuta amasamba ndizocheperako pomwe mafuta a tiyi amakhala 0.8% ndi mafuta a kanjedza kukhala 6%.Komabe, zomwe zili mu koko zimatha kufika 34%.

Pali njira ziwiri zazikulu zopangira stearic acid m'mafakitale, zomwe ndi njira yogawanitsa ndi kuponderezana.Onjezani kuwonongeka kwa mafuta a hydrogenated, ndiyeno hydrolyze kuti mupatse asidi wopanda mafuta, pitilizani kutsuka ndi madzi, distillation, bleaching kuti mupeze zomalizidwa ndi glycerol monga chotulukapo.
Ambiri opanga zoweta amagwiritsa ntchito mafuta a nyama kupanga.Mitundu ina yaukadaulo wopanga ipangitsa kuti kutha kwa distillation yamafuta acid omwe amatulutsa fungo lolimbikitsa panthawi yokonza pulasitiki komanso kutentha kwambiri.Ngakhale fungo ili liribe poizoni koma lidzakhala ndi zotsatira zina pazochitika zogwirira ntchito ndi chilengedwe.Ambiri kunja mawonekedwe a asidi stearic amatenga masamba mafuta monga zopangira, njira kupanga ndi apamwamba kwambiri;asidi opangidwa ndi stearic ndi wokhazikika, katundu wabwino wothira mafuta komanso fungo lochepa pakugwiritsa ntchito.
Stearic acid imagwiritsidwa ntchito makamaka popanga stearate monga sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminium stearate, cadmium stearate, iron stearate, ndi potaziyamu stearate.Mchere wa sodium kapena potaziyamu wa stearic acid ndi gawo la sopo.Ngakhale sodium stearate ili ndi mphamvu yochepetsera pang'ono kuposa sodium palmitate, koma kupezeka kwake kumatha kukulitsa kuuma kwa sopo.
Tengani batala ngati zopangira, dutsani sulfuric acid kapena njira yopanikizidwa kuti iwonongeke.Mafuta amafuta aulere amayamba kutsatiridwa ndi njira yoponderezedwa ndi madzi pochotsa palmitic acid ndi oleic acid pa 30 ~ 40 ℃, kenako amasungunuka mu ethanol, kenako ndikuwonjezera barium acetate kapena magnesium acetate yomwe imayambitsa stearate.Kenaka yikani kuchepetsa sulfuric acid kuti mutenge asidi wa stearate waulere, sefa ndi kutenga, ndi kukonzanso mu Mowa kuti mupeze stearic acid yoyera.