Igiciro cyiza cy'umukora aside Stearic CAS:57-11-4

ibisobanuro bigufi:

Aside ya Stearic: (urwego rw'inganda) Aside ya Octadecanoic, C18H36O2, ikorwa hidrolisi ya peteroli kandi ikoreshwa cyane cyane mu gukora stearate
Aside Stearic-829 Aside Stearic, Aside Stearic ni aside ikomeye ikomoka ku mavuta y’inyamaswa n’ibimera, ibice by’ingenzi birimo aside stearic (C18H36O2) na aside palmitic (C16H32O2).
Iki gicuruzwa ni umweru cyangwa umweru nk'ifu cyangwa icyuma gikomeye cya kristu, imiterere yacyo ifite kristalo ntoya y'urushinge; Gifite impumuro nto isa n'amavuta kandi ntigishobora gushonga. Iki gicuruzwa gishongeshwa muri chloroform cyangwa diethyl ether, gishongeshwa muri ethanol, hafi ya cyose ntigishongeshwa mu mazi. Aho gikonjeshwa Aho igicuruzwa gikonjeshwa (Umugereka Ⅵ D) ntugomba kuba munsi ya 54℃. Agaciro ka iyode Agaciro ka iyode k'iki gicuruzwa (Umugereka Ⅶ H) ntikarenze 4. Agaciro ka aside (Umugereka Ⅶ H) k'iki gicuruzwa kari hagati ya 203 na 210. Stearate ihura neza na iyoni za manyeziyumu na kalisiyumu maze igakora magnesium stearate na calcium stearate (white precipitate)
Aside ya Stearic CAS 57-11-4
Izina ry'igicuruzwa: aside stearike

CAS: 57-11-4

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Amagambo asa

Acide Stearicum 50; aside ya Cetylacetic; FEMA 3035; aside ya Carboxylic C18; C18; C18:0 aside y'ibinure; hystrene5016; hystrene7018

Imikoreshereze ya aside Stearic

Aside ya Stearic, (yo mu rwego rw'inganda) Aside ya Stearic ni imwe muri aside nyinshi zikomeye z'ibinure zigizwe n'amavuta n'ibinure. Iboneka mu mavuta y'inyamaswa, mu mavuta no mu bwoko bumwe na bumwe bw'amavuta y'ibimera ndetse no mu buryo bwa glycerides. Aya mavuta, nyuma yo guhirima, akora aside ya stearic.
Aside ya Stearic ni aside irike iboneka cyane mu miterere yayo kandi ifite imiterere rusange ya aside karubokisilike. Hafi y'ubwoko bwose bw'ibinure n'amavuta birimo ingano runaka ya aside ya stearic hamwe n'ibinure biri mu nyamaswa biba byinshi ugereranije. Urugero, ingano iri mu mavuta ishobora kugera kuri 24% mu gihe ingano iri mu mavuta y'ibimera iri hasi ugereranyije n'agaciro ka mazutu y'icyayi kaba 0.8% naho amavuta ari mu bitoki akaba 6%. Ariko, ingano iri muri kakao ishobora kugera kuri 34%.

Hari uburyo bubiri bw'ingenzi bwo gukora aside stearike mu nganda, ari bwo gutandukanya no gukanda. Shyira umuti wo kubora mu mavuta ya hydrogenated, hanyuma ushyiremo hydrolyze kugira ngo aside crude liqueur itange, hanyuma unyure mu mazi, unyweshe, uvange kugira ngo ubone umusaruro urangiye ukoresheje glycerol nk'umusaruro ukurikira.
Inganda nyinshi zo mu rugo zikoresha amavuta y’inyamaswa mu gukora. Hari ubwoko bumwe bw’ikoranabuhanga rituma aside irike ibura burundu, bigatuma impumuro nziza itangwa mu gihe cyo gutunganya pulasitiki n’ubushyuhe bwinshi. Nubwo iyo mpumuro idahumanya, ariko igira ingaruka ku mikorere no ku bidukikije. Ubwoko bwinshi bwa aside stearic itumizwa mu mahanga bufata amavuta y’ibimera nk’ibikoresho fatizo, uburyo bwo kuyikora buteye imbere cyane; aside stearic ikorwa irakora neza, ifite ubushobozi bwo kwisiga neza kandi ntigira impumuro nyinshi mu kuyikoresha.
Aside ya Stearic ikoreshwa cyane cyane mu gukora stearate nka sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminium stearate, cadmium stearate, iron stearate, na potassium stearate. Umunyu wa sodium cyangwa potasiyumu wa aside stearic ni wo ugize isabune. Nubwo sodium stearate ifite ubushobozi buke bwo gukuraho umwanda ugereranyije na sodium palmitate, ariko kuba ihari bishobora kongera ubukana bw'isabune.
Fata amavuta nk'ibikoresho fatizo, unyuze muri aside sulfurike cyangwa uburyo bwo kubora. Aside irike yigenga yabanje gukoreshwa mu buryo bw'umuvuduko w'amazi kugira ngo ikureho aside palmitic na aside oleic kuri 30 ~ 40 ℃, hanyuma ishongeshwa muri ethanol, hagakurikiraho kongeramo barium acetate cyangwa magnesium acetate ituma stearate itera. Hanyuma ongeramo aside sulfurike ivanze kugira ngo ubone aside stearate yigenga, uyiyungurure hanyuma uyifate, hanyuma wongere uyishyiremo crystallize muri ethanol kugira ngo ubone aside stearic nziza.