Onye nrụpụta ezigbo ọnụ ahịa Stearic acid CAS: 57-11-4

nkowa nkenke:

Stearic acid : (ọkwa ụlọ ọrụ) Octadecanoic acid, C18H36O2, bụ nke hydrolysis nke mmanụ na-emepụta ma jiri ya mee ihe na mmepụta nke stearate.
Stearic Acid-829 Stearic acid, Stearic acid bụ acid fatty siri ike enwetara site na anụmanụ na abụba akwụkwọ nri, ihe ndị bụ isi mejupụtara ya bụ stearic acid (C18H36O2) na palmitic acid (C16H32O2).
Ngwaahịa a na-acha ọcha ma ọ bụ na-acha ọcha dị ka ntụ ntụ ma ọ bụ kristal siri ike ngọngọ, ya profaịlụ nwere microstrip luster ezi agịga crystal;Ọ nwere ntakịrị isi dị ka griiz na enweghị ụtọ.Ngwaahịa a na-agbaze na chloroform ma ọ bụ diethyl ether, gbazere na ethanol, ọ fọrọ nke nta ka ọ ghara ịsacha ya na mmiri.Ebe oyi na-ekpo ọkụ (Ihe mgbakwunye Ⅵ D) nke ngwaahịa agaghị adị ala karịa 54℃.Uru Iodine Uru ayodiin nke ngwaahịa a (Ihe mgbakwunye Ⅶ H) abụghị ihe karịrị 4. Acid Uru (Ihe mgbakwunye Ⅶ H) nke ngwaahịa a sitere na 203 ruo 210. Stearate na-anabata ngwa ngwa na magnesium na calcium ion iji mepụta magnesium stearate na calcium stearate. (ọcha ọcha)
Stearic acid CAS 57-11-4
Aha ngwaahịa: Stearic acid

Isi: 57-11-4

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

Ngwa nke Stearic acid

Stearic acid, (ọkwa ụlọ ọrụ) Stearic acid bụ otu n'ime ọtụtụ nnukwu ọdụdụ ọdụdụ asịd nke nwere mmanụ na abụba.A na-egosi ya na abụba anụmanụ, mmanụ na ụfọdụ ụdị mmanụ ihe oriri yana n'ụdị glycerides.Mmanụ ndị a, mgbe hydrolysis, na-emepụta stearic acid.
Stearic acid bụ acid fatty dị n'ọtụtụ ebe na okike ma nwee njirimara kemịkalụ n'ozuzu nke carboxylic acid.Ihe fọrọ nke nta ka ọ bụrụ ụdị abụba na mmanụ ọ bụla nwere ụfọdụ stearic acid nke ọdịnaya dị na abụba anụmanụ dị elu.Dịka ọmụmaatụ, ọdịnaya dị na bọta nwere ike iru 24% ebe ọdịnaya dị na mmanụ ihe oriri dị ntakịrị na uru dị na mmanụ tii bụ 0.8% na mmanụ n'ọbụ aka bụ 6%.Agbanyeghị, ọdịnaya dị na koko nwere ike iru 34%.

Enwere ụzọ abụọ dị mkpa maka mmepụta nke stearic acid, ya bụ akụkụ nke akụkụ na usoro mkpakọ.Tinye decomposition gị n'ụlọnga na hydrogenated mmanụ, na mgbe ahụ, hydrolyze na-enye crude ọdụdụ asịd acid, n'ihu na-aga site na-asa na mmiri, distillation, bleaching nweta okokụre ngwaahịa na glycerol dị ka byproduct.
Ọtụtụ ndị na-emepụta ụlọ na-eji abụba anụmanụ eme ihe.Ụdị ụfọdụ nke teknụzụ mmepụta ga-eme ka njedebe nke distillation nke fatty acid nke na-emepụta ísì na-akpali akpali n'oge nhazi plastik na okpomọkụ dị elu.Ọ bụ ezie na isi ísì ndị a adịghị egbu egbu ma ha ga-enwe mmetụta ụfọdụ na ọnọdụ ọrụ na gburugburu ebe obibi.Ọtụtụ ụdị stearic acid a na-ebubata na-ewere mmanụ ihe oriri dị ka akụrụngwa, usoro mmepụta na-emewanyewanye elu;stearic acid emepụtara bụ nke arụmọrụ kwụsiri ike, ezigbo mmanu mmanu na obere isi na ngwa ahụ.
A na-ejikarị stearic acid mee ihe maka mmepụta nke stearate dị ka sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminum stearate, cadmium stearate, iron stearate, na potassium stearate.Nnu sodium ma ọ bụ potassium nke stearic acid bụ akụkụ nke ncha.Ọ bụ ezie na sodium stearate nwere obere mmetọ ike karịa sodium palmitate, mana ọnụnọ ya nwere ike ime ka ncha sie ike.
Were bọta dị ka akụrụngwa, gafere sulfuric acid ma ọ bụ usoro nrụgide maka ire ere.Acids fatty free bụ nke mbụ dabere na usoro nrụgide mmiri maka iwepụ palmitic acid na oleic acid na 30 ~ 40 ℃, wee gbazee na ethanol, na-esote mgbakwunye barium acetate ma ọ bụ magnesium acetate nke na-ebute stearate.Mgbe ahụ, tinyekwuo sulfuric acid ka ị nweta stearate acid n'efu, nyochaa ma were ya, ma re-crystalize na ethanol iji nweta stearic acid dị ọcha.