Moetsi oa Theko e Molemo Stearic acid CAS: 57-11-4

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tlhaloso e khuts'oane:

Asiti ea Stearic : (mophato oa indasteri) Octadecanoic acid, C18H36O2, e hlahisoa ke hydrolysis ea oli 'me e sebelisoa haholo tlhahisong ea stearate.
Stearic Acid-829 Stearic acid, Stearic acid ke mafura a mafura a tiileng a fumanoang mafura a liphoofolo le meroho, likarolo tse ka sehloohong tsa tsona ke stearic acid (C18H36O2) le palmitic acid (C16H32O2).
Sehlahisoa sena se tšoeu kapa se tšoeu joalo ka phofo kapa crystalline hard block, profil ea eona e na le kristale ea nale e ntle ea microstrip luster;E na le monko o fokolang o tšoanang le mafura 'me ha e latsoehe.Sehlahisoa sena se qhibiliha ka chloroform kapa diethyl ether, se qhibiliha ka ethanol, hoo e ka bang ha se qhibilihe ka metsing.Sebaka sa leqhoa Sebaka sa leqhoa (Sehlomathiso Ⅵ D) sa sehlahisoa ha se na ho ba ka tlase ho 54℃.Boleng ba iodine Boleng ba iodine ea sehlahisoa sena (Sehlomathiso Ⅶ H) ha se fete 4. Boleng ba Acid (Sehlomathiso Ⅶ H) ea sehlahisoa sena bo tloha ho 203 ho isa ho 210. Stearate e sebetsa habonolo ka magnesium le calcium ions ho theha magnesium stearate le calcium stearate. (pula e tšoeu)
Asiti ea Stearic CAS 57-11-4
Lebitso la Sehlahisoa: Stearic acid

CAS: 57-11-4

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

Lisebelisoa tsa Stearic acid

Stearic acid, (sehlopha sa indasteri) Stearic acid ke e 'ngoe ea li-acid tse ngata tse telele tse nang le mafura a nang le oli le mafura.E hlahisoa ka mafura a liphoofolo, oli le mefuta e meng ea oli ea meroho hammoho le mofuta oa glycerides.Lioli tsena, kamora hydrolysis, li hlahisa asiti ea stearic.
Asiti ea Stearic ke mafura a mafura a teng ka tlhaho 'me a na le lik'hemik'hale tse akaretsang tsa li-carboxylic acid.Hoo e ka bang mefuta eohle ea mafura le oli e na le palo e itseng ea asiti ea stearic, 'me mafura a liphoofolo a phahame haholo.Ka mohlala, lintho tse ka har'a botoro li ka fihla ho 24% ha lihlahisoa tsa oli ea meroho li le tlase ka boleng ba oli ea tee ke 0.8% le oli ea palema ke 6%.Leha ho le joalo, likahare tsa cocoa li ka fihla holimo ho 34%.

Ho na le mekhoa e 'meli e meholo ea tlhahiso ea liindasteri tsa stearic acid, e leng mokhoa oa ho arola le oa khatello.Eketsa moemeli oa ho bola ho oli ea hydrogenated, ebe o hydrolyze ho fana ka mafura a mafura a mafura, ho feta ho hlatsoa ka metsi, distillation, bleaching ho fumana lihlahisoa tse felileng ka glycerol e le byproduct.
Bahlahisi ba bangata ba malapeng ba sebelisa mafura a liphoofolo bakeng sa tlhahiso.Mefuta e meng ea thekenoloji ea tlhahiso e tla fella ka ho se phethoe ha ho tšeloa ha mafura a acid e hlahisang monko o monate ka nako ea ho etsoa ha polasetiki le mocheso o phahameng.Le hoja monko ona o se na chefo empa o tla ba le phello e itseng maemong a ho sebetsa le tikoloho ea tlhaho.Mefuta e mengata e tsoang linaheng tse ling ea stearic acid e nka oli ea meroho e le lisebelisoa tse tala, mekhoa ea tlhahiso e tsoetse pele;acid e hlahisoang ke stearic ke ea ts'ebetso e tsitsitseng, thepa e ntle ea lubrication le monko o fokolang ts'ebetsong.
Asiti ea Stearic e sebelisoa haholo bakeng sa tlhahiso ea li-stearate tse kang sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminium stearate, cadmium stearate, iron stearate, le potassium stearate.Letsoai la sodium kapa potasiamo la stearic acid ke karolo ea sesepa.Le hoja sodium stearate e na le bokhoni bo fokolang ba ho senya ho feta sodium palmitate, empa boteng ba eona bo ka eketsa ho thatafala ha sesepa.
Nka botoro e le thepa e tala, feta ka sulfuric acid kapa mokhoa o hatellang oa ho bola.Li-acid tse sa lefelloeng tsa mafura li ne li qala ka mokhoa oa khatello ea metsi bakeng sa ho tlosa palmitic acid le oleic acid ho 30 ~ 40 ℃, 'me ea qhibiliha ka ethanol, e lateloa ke tlatsetso ea barium acetate kapa magnesium acetate e etsang hore stearate e be teng.Ebe u eketsa sulfuric acid e hlapollang ho fumana asiti ea mahala ea stearate, sefa ebe u e nka, 'me u boele u khanye ka har'a ethanol ho fumana asiti e hloekileng ea stearic.