Umenzi wexabiso Elilungileyo I-Stearic acid CAS: 57-11-4

Umenzi Ixabiso Elilungileyo I-Stearic acid CAS: 57-11-4 Umfanekiso obonakalayo

inkcazelo emfutshane:

I-Stearic acid : (ibakala lemizi-mveliso) i-Octadecanoic acid, i-C18H36O2, iveliswa yi-hydrolysis yeoli kwaye isetyenziswa ikakhulu kwimveliso ye-stearate.
I-Stearic Acid-829 i-Stearic acid, i-Stearic acid i-acid eqinile efunyenwe kwizilwanyana kunye nemifuno yezilwanyana, ezona nxalenye eziphambili ze-stearic acid (C18H36O2) kunye ne-palmitic acid (C16H32O2).
Le mveliso imhlophe okanye imhlophe njengomgubo okanye i-crystalline block block, iprofayili yayo ine-microstrip luster i-crystal inaliti entle;Inevumba elincinane elifana negrisi kwaye ayinancasa.Le mveliso i-soluble kwi-chloroform okanye i-diethyl ether, inyibilika kwi-ethanol, phantse ayinyibiliki emanzini.Indawo yokukhenkceza (Isihlomelo Ⅵ D) yemveliso ayisayi kuba ngaphantsi kwe 54℃.Ixabiso le-iodine Ixabiso le-iodine yalo mveliso (Isihlomelo Ⅶ H) alikho ngaphezu kwe-4. Ixabiso le-Acid (Isihlomelo Ⅶ H) sale mveliso sisuka kwi-203 ukuya kwi-210. (imvula emhlophe)
Stearic acid CAS 57-11-4
Igama lemveliso: Stearic acid

CAS: 57-11-4

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Izithethantonye

ACIDUM STEARICUM 50;CETYLACETIC ACID;FEMA 3035;CARBOXYLIC ACID C18;C18;C18:0 FATTY ACID;hystrene5016;hystrene7018

Ukusetyenziswa kwe-Stearic acid

Iasidi yeStearic, (ibakala lemizi-mveliso) Iasidi yeStearic yenye yee-asidi ezininzi ezinomxokelelwane omde ezibandakanya ioyile kunye namafutha.Ibonakaliswa ngamafutha ezilwanyana, ioyile kunye nezinye iintlobo zeoyile yemifuno ngokunjalo ngendlela yeglycerides.Ezi oyile, emva kwe-hydrolysis, zivelisa i-asidi ye-stearic.
I-Stearic acid yi-asidi enamafutha ekhoyo ngokubanzi kwindalo kwaye ineempawu zekhemikhali eziqhelekileyo ze-carboxylic acids.Phantse zonke iintlobo zamafutha kunye ne-oyile ziqulethe isixa esithile se-stearic acid kunye nomxholo kumafutha ezilwanyana uphezulu.Ngokomzekelo, umxholo webhotolo unokufikelela kwi-24% ngelixa umxholo we-oyile yemifuno uphantsi kunye nexabiso kwi-oyile yeti ibe yi-0.8% kunye ne-oyile esundu yi-6%.Nangona kunjalo, umxholo we-cocoa unokufikelela phezulu ukuya kuma-34%.

Kukho iindlela ezimbini eziphambili zemveliso ye-stearic acid, ezizezi, ulwahlulo kunye nendlela yoxinzelelo.Yongeza i-ejenti yokubola kwioli ye-hydrogenated, kwaye emva koko i-hydrolyze ukunika i-acid ekrwada enamafutha, iqhube phambili ngokuhlamba ngamanzi, i-distillation, i-bleaching ukufumana iimveliso ezigqityiweyo nge-glycerol njenge-byproduct.
Uninzi lwabavelisi basekhaya basebenzisa amanqatha ezilwanyana ukuvelisa.Ezinye iintlobo zeteknoloji yokuvelisa ziya kubangela ukugqitywa kwe-distillation ye-fatty acid evelisa ivumba elikhuthazayo ngexesha lokulungiswa kweplastiki kunye nokushisa okuphezulu.Nangona eli vumba lingenabutyhefu kodwa liya kuba nefuthe elithile kwiimeko zokusebenza kunye nokusingqongileyo kwendalo.Uninzi lwamazwe angaphandle lwe-stearic acid luthatha i-oyile yemifuno njengento ekrwada, iinkqubo zokuvelisa zihamba phambili;i-asidi ye-stearic eveliswayo intsebenzo ezinzileyo, ipropati enhle yokuthambisa kunye nevumba elincinci kwisicelo.
I-asidi ye-Stearic isetyenziselwa ukuveliswa kwee-stearate ezifana ne-sodium stearate, i-magnesium stearate, i-calcium stearate, i-lead stearate, i-aluminium stearate, i-cadmium stearate, i-iron stearate, kunye ne-potassium stearate.Ityuwa yesodium okanye i-potassium ye-stearic acid yinxalenye yesepha.Nangona i-sodium stearate inesakhono esingaphantsi sokucoca kunesodium palmitate, kodwa ubukho bayo bunokunyusa ukuqina kwesepha.
Thatha ibhotolo njengento eluhlaza, yiya kwi-asidi yesulfuric okanye indlela ecinezelekileyo yokubola.I-fatty acids yamahhala yayiqala phantsi kwendlela yoxinzelelo lwamanzi yokususa i-palmitic acid kunye ne-oleic acid kwi-30 ~ 40 ℃, kwaye yachithwa kwi-ethanol, ilandelwa ngokongezwa kwe-barium acetate okanye i-magnesium acetate eyenza i-stearate.Emva koko wongeze i-asidi yesulfuric ehlanjululweyo ukuze ufumane iasidi ye-stearate yasimahla, ihluzo kwaye uyithathe, kwaye uphinde ukhanye kwi-ethanol ukufumana iasidi ye-stearic ecocekileyo.