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

Intengo Enhle Yomkhiqizi I-Stearic acid CAS:57-11-4 Isithombe Esifakiwe

incazelo emfushane:

I-Stearic acid: (izinga lezimboni) I-Octadecanoic acid, i-C18H36O2, ikhiqizwa yi-hydrolysis yamafutha futhi isetshenziswa kakhulu ekukhiqizeni i-stearate
I-Stearic Acid-829 I-Stearic acid, i-Stearic acid iyi-fatty acid eqinile etholakala emafutheni ezilwane nemifino, izingxenye zayo eziyinhloko yi-stearic acid (C18H36O2) kanye ne-palmitic acid (C16H32O2).
Lo mkhiqizo umhlophe noma umhlophe njengompuphu noma i-crystalline hard block, iphrofayili yawo ine-microstrip luster fine needle crystal; Inephunga elincane elifana namafutha futhi ayinambitheki. Lo mkhiqizo uncibilika ku-chloroform noma i-diethyl ether, uncibilika ku-ethanol, cishe awuncibiliki emanzini. Iphuzu lokuqandisa Iphuzu lokuqandisa (Isithasiselo Ⅵ D) lomkhiqizo akumele libe ngaphansi kuka-54℃. Inani le-iodine Inani le-iodine lalo mkhiqizo (Isithasiselo Ⅶ H) alidluli ku-4. Inani le-Acid (Isithasiselo Ⅶ H) lalo mkhiqizo lisukela ku-203 kuya ku-210. I-Stearate isabela kalula ngama-ion e-magnesium ne-calcium ukuze yakhe i-magnesium stearate kanye ne-calcium stearate (i-white precipitate).
I-Stearic acid CAS 57-11-4
Igama Lomkhiqizo: I-Stearic acid

I-CAS: 57-11-4

Sithumelele i-imeyili

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

Amagama afanayo

I-ACIDUM STEARICUM 50; I-ACETYLACETIC ACID; I-FEMA 3035; I-ACIDI YE-CARBOXYLIC C18; C18; C18:0 I-ACIDI YAMAFUTHA; i-hystrene5016; i-hystrene7018

Ukusetshenziswa kwe-Stearic acid

I-Stearic acid, (izinga lezimboni) I-Stearic acid ingenye yama-fatty acid amaningi amakhulu ane-long chain aqukethe amafutha namafutha. Itholakala emafutheni ezilwane, emafutheni nakwezinye izinhlobo zamafutha emifino kanye nasesimweni se-glycerides. Lawa mafutha, ngemva kwe-hydrolysis, akhiqiza i-stearic acid.
I-Stearic acid iyi-fatty acid etholakala kabanzi ngokwemvelo futhi inezakhiwo zamakhemikhali ezijwayelekile zama-carboxylic acid. Cishe zonke izinhlobo zamafutha namafutha ziqukethe inani elithile le-stearic acid kanti okuqukethwe emafutheni ezilwane kuphakeme kakhulu. Isibonelo, okuqukethwe ebhotela kungafinyelela ku-24% kanti okuqukethwe emafutheni emifino kuphansi kakhulu kanti inani emafutheni etiye lingu-0.8% kanti amafutha esundu angu-6%. Kodwa-ke, okuqukethwe ku-cocoa kungafinyelela ku-34%.

Kunezindlela ezimbili ezinkulu zokukhiqizwa kwe-stearic acid ezimbonini, okungukuthi ukuhlukaniswa kanye nendlela yokucindezela. Faka i-ejenti yokubola ku-oyili ene-hydrogenated, bese uyi-hydrolyze ukuze unikeze i-asidi yamafutha angahluziwe, uqhubeke nokugeza ngamanzi, ukuhluza, ukufiphaza ukuze uthole imikhiqizo eqediwe ene-glycerol njengomkhiqizo olandelayo.
Iningi labakhiqizi basekhaya basebenzisa amafutha ezilwane ukukhiqiza. Ezinye izinhlobo zobuchwepheshe bokukhiqiza zizoholela ekungaqedweni kokuhluzwa kwe-fatty acid ekhiqiza iphunga elivuselelayo ngesikhathi sokucubungula ipulasitiki kanye namazinga okushisa aphezulu. Nakuba la maphunga engenabo ubuthi kodwa azoba nomthelela othile ezimweni zokusebenza kanye nendawo yemvelo. Uhlobo oluningi olungeniswayo lwe-stearic acid luthatha uwoyela wemifino njengezinto zokusetshenziswa, izinqubo zokukhiqiza zithuthuke kakhulu; i-stearic acid ekhiqizwayo isebenza kahle, inempahla enhle yokuthambisa futhi ayinaphunga eliningi 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, kanye ne-potassium stearate. Usawoti we-sodium noma we-potassium we-stearic acid uyingxenye yensipho. Nakuba i-sodium stearate inekhono elincane lokuhlanza ukungcola kune-sodium palmitate, kodwa ukuba khona kwayo kungandisa ubulukhuni bensipho.
Thatha ibhotela njengezinto zokusetshenziswa, dlula ku-sulfuric acid noma indlela yokucindezela ukuze ubole. Ama-fatty acid amahhala aqale afakwa endleleni yokucindezela kwamanzi ukuze kususwe i-palmitic acid kanye ne-oleic acid ku-30~40 ℃, bese encibilikiswa ku-ethanol, kulandelwe ukwengeza i-barium acetate noma i-magnesium acetate ebangela i-stearate. Bese ufaka i-sulfuric acid encibilikisiwe ukuze uthole i-free stearate acid, uyihlunge bese uyithatha, bese uyiphinda uyicwebezelise ku-ethanol ukuze uthole i-stearic acid emsulwa.