Umkhiqizi Intengo Enhle I-Stearic acid CAS:57-11-4

I-Stearic acid, (ibanga lezimboni) I-Stearic acid ingenye yama-acid amaningi anochungechunge olude ahlanganisa uwoyela namafutha.Ivezwa emafutheni ezilwane, uwoyela kanye nezinye izinhlobo zamafutha emifino kanjalo nangendlela yama-glycerides.Lawa mafutha, ngemva kwe-hydrolysis, akhiqiza i-stearic acid.
I-Stearic acid iyi-asidi enamafutha ekhona kabanzi emvelweni futhi inamakhemikhali ajwayelekile we-carboxylic acid.Cishe zonke izinhlobo zamafutha namafutha aqukethe inani elithile le-stearic acid futhi okuqukethwe kunamafutha ezilwane kuphezulu uma kuqhathaniswa.Isibonelo, okuqukethwe ebhotela kungafinyelela ku-24% kuyilapho okuqukethwe kuwoyela wemifino kuphansi uma kuqhathaniswa nenani likawoyela wetiye elingu-0.8% kanye nowoyela wesundu u-6%.Kodwa-ke, okuqukethwe ku-cocoa kungafinyelela ku-34%.

Kunezindlela ezimbili ezinkulu zokukhiqizwa kwezimboni ze-stearic acid, okuyi-fractionation kanye nendlela yokucindezela.Engeza i-ejenti yokubola emafutheni e-hydrogenated, bese u-hydrolyze ukuze unikeze i-acid engahluziwe yamafutha, uqhubeke ugeza ngamanzi, i-distillation, i-bleaching ukuze uthole imikhiqizo ephelile nge-glycerol njenge-byproduct.
Abakhiqizi abaningi basekhaya basebenzisa amafutha ezilwane ukuze bakhiqize.Ezinye izinhlobo zobuchwepheshe bokukhiqiza zizoholela ekungaqedweni kokukhishwa kwe-distillation ye-fatty acid ekhiqiza iphunga elikhuthazayo ngesikhathi sokucutshungulwa kwepulasitiki kanye namazinga okushisa aphezulu.Nakuba leli phunga lingenabo ubuthi kodwa lizoba nomthelela othize ezimeni zokusebenza kanye nemvelo.Uhlobo oluningi olungenisiwe lwe-stearic acid luthatha amafutha yemifino njengezinto zokusetshenziswa, izinqubo zokukhiqiza zithuthuke kakhulu;i-stearic acid ekhiqiziwe inokusebenza okuzinzile, impahla enhle yokugcoba kanye nephunga elincane ekusetshenzisweni.
I-Stearic acid isetshenziswa kakhulu ekukhiqizeni ama-stearates afana ne-sodium stearate, i-magnesium stearate, i-calcium stearate, i-lead stearate, i-aluminium stearate, i-cadmium stearate, i-iron stearate, ne-potassium stearate.Usawoti we-sodium noma we-potassium we-stearic acid uyingxenye yensipho.Nakuba i-sodium stearate inamandla amancane okukhipha ukungcola kune-sodium palmitate, kodwa ukuba khona kwayo kungase kwenyuse ubulukhuni bensipho.
Thatha ibhotela njengento eluhlaza, dlula nge-sulfuric acid noma indlela ecindezelwe yokubola.Ama-fatty acids amahhala aqale angaphansi kwendlela yokucindezela kwamanzi yokukhipha i-palmitic acid ne-oleic acid ku-30~40 ℃, bese encibilika ku-ethanol, kulandelwa ukwengezwa kwe-barium acetate noma i-magnesium acetate eyenza i-stearate.Bese wengeza futhi i-sulfuric acid ehlanjululwe ukuze uthole i-stearate acid yamahhala, hlunga futhi uyithathe, bese uphinda ucwebe ku-ethanol ukuze uthole i-stearic acid emsulwa.