Shaanxi BLOOM Tech Co., Ltd. yog ib tug ntawm cov uas paub txog manufacturers thiab lwm tus neeg ntawm ethyl stearate cas 111-61-5 nyob rau hauv Suav teb. Txais tos rau cov lag luam wholesale bulk zoo ethyl stearate cas 111-61-5 muag ntawm no los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.
Ethyl stearate, tseem hu ua Ethyl Octadecanoate los yog Octadecanoic Acid Ethyl Ester, yog ib qho tshuaj sib xyaw nrog cov mis molecular C20H40O2. Nws feem ntau raug xa mus los ntawm nws cov npe xws li thyl stearate, Stearic Acid Ethyl Ester, thiab Octadecanoic Acid Ethyl Ester. Nws tshwm sim li dawb crystalline khoom ntawm chav tsev kub, uas yuav luag tsis muaj ntxhiab tsw. Txawm li cas los xij, nws kuj tuaj yeem piav qhia tias yog cov kua tsis muaj xim thiab tsw ntxhiab nyob rau hauv qee yam mob. Melting point feem ntau yog nyob nruab nrab ntawm 33-38 degree, nyob ntawm qhov purity thiab manufacturing txheej txheem. Boiling point nyob ib ncig ntawm 213-215℃nyob rau hauv ib txwm siab. Solubility soluble nyob rau hauv ethanol thiab ether tab sis insoluble nyob rau hauv dej.
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Tshuaj Formula |
C20H40O2 |
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Exact Mass |
312.30 |
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Molecular Luj |
312.54 |
| m/z | 312.30 (100.0%), 313.31 (21.6%), 314.31 (2.2%) |
| Elemental Analysis | C, 76.86; H, 12.90; O, 10.24 |
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Melting Point |
34-38℃(lit.) |
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Boiling Point |
213-215℃15 hli Hg (lit.) |
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Qhov ntom |
1.057 |
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Refractive Index |
1.4349 |
| Flash Point | >230℃F |
| Kev cia khoom | 2-8 degree |
| Solubility | Chloroform (me ntsis), Ethyl Acetate (me ntsis) |
| Daim ntawv | Dawb Crystalline Mass |
| tsw | Waxy |
Ethyl stearate(cov tshuaj formula C₂₀H₄₀O₂) yog cov organic compound tsim los ntawm esterification cov tshuaj tiv thaiv ntawm stearic acid thiab ethanol. Nyob rau hauv chav tsev kub, nws yog ib tug dawb crystalline khoom los yog tsis muaj xim rau daj ntseg daj pob tshab oily kua nrog ib tug tsis muaj zog oily tsw. Nws cov qauv tshuaj tshwj xeeb endows nws nrog lubricity, emulsification, stability, thiab daim tawv nqaij friendliness, ua rau nws lug siv nyob rau hauv ntau yam teb xws li kev lag luam, khoom noj khoom haus, tshuaj pleev ib ce, thiab tshuaj.
Industrial sector: Lubrication thiab kev ua haujlwm zoo
Hauv kev lag luam, nws tsuas yog siv los ua cov roj nplua nyeem, cov tshuaj tua dej, thiab cov emulsifier, thiab nws cov ntawv thov scenarios npog ntau yam kev lag luam xws li kev lag luam yas, kev tsim roj hmab, coatings thiab inks.
1. Yas ua lubricant
Hauv kev tsim cov PVC (polyvinyl chloride) cov kav dej, cov ntawv txheeb, thiab cov yeeb yaj kiab, ua cov roj nplua nyeem sab hauv, nws txhim kho cov khoom ntws thiab txo cov khoom siv los ntawm kev txo qis kev sib txhuam.
Nws thermal stability tuaj yeem tiv thaiv cov khoom degradation thaum ua thiab xyuas kom meej qhov smoothness ntawm cov khoom nto. Piv txwv li, hauv PVC zaj duab xis tsim, ntxiv thyl stearate tuaj yeem txo cov yeeb yaj kiab thickness sib txawv thiab txhim kho cov txiaj ntsig.
2. Roj hmab kev lag luam kev ua haujlwm zoo
Hauv kev sib xyaw roj hmab thiab kev ua haujlwm, nws ua haujlwm ntau lub luag haujlwm ua tus neeg sawv cev vulcanizing, plasticizer, thiab softener. Hauv kev ua cov roj hmab ntuj, nws tuaj yeem txhawb nqa cov tshuaj tiv thaiv vulcanization thiab txhim kho qhov hnav tsis kam ntawm cov khoom; Nyob rau hauv lub tshav pob ntawm hluavtaws roj hmab, lub aging kuj yog txhim kho los ntawm kev kho qhov yooj ntawm molecular chains.
Tsis tas li ntawd, hauv kev tsim cov roj hmab ua npuas ncauj, thyl stearate ua tus neeg sawv cev foaming tuaj yeem tswj cov npuas loj tis thiab optimize cov khoom ntom thiab elasticity.
3. Txheej number case leveling thiab dispersion
Nyob rau hauv cov txheej txheem txheej, kev txhim kho qib los ntawm kev txo qhov nro ntawm qhov chaw thiab tshem tawm qhov tshwm sim ntawm txiv kab ntxwv tev ntawm txheej txheej. Nws cov khoom emulsifying tuaj yeem txhawb kev sib cais ntawm cov xim thiab tiv thaiv nag lossis daus thiab agglomeration. Piv txwv li, ntxiv thyl stearate rau automotive coatings tuaj yeem ua rau cov txheej txheem glossiness los ntawm 15% -20% thiab txhim kho huab cua tsis kam.
Kev lag luam number case siv nws cov dej tsis kam los txhim kho cov dej tsis kam ntawm cov ntaub ntawv luam tawm thiab txuas ntxiv lawv lub txee lub neej.
4. Kev kho dej tsis zoo ntawm daim ntawv thiab tawv
Raws li tus neeg sawv cev tiv thaiv dej, nws tuaj yeem tsim cov yeeb yaj kiab hydrophobic ntawm daim ntawv kom tsis txhob ya raws los ntawm kev nkag mus. Kev sim cov ntaub ntawv qhia tau hais tias lub kaum sab xis ntawm daim ntawv kho nrog thyl stearate tuaj yeem ncav cuag tshaj 120 degree, thiab cov dej nqus dej tau txo los ntawm 80%. Hauv kev ua cov tawv nqaij, nws tuaj yeem nkag mus rau hauv qhov sib txawv ntawm cov fibers los tsim cov txheej txheem tiv thaiv, uas tsis tsuas yog tswj cov tawv nqaij, tab sis kuj txhim kho nws cov peev xwm tiv thaiv fouling.
Kev lag luam khoom noj khoom haus: Flavor thiab Process Optimization
Daim ntawv thov ntawmethyl stearatehauv kev lag luam zaub mov tsom rau kev tsim cov txuj lom thiab kev txhim kho cov txheej txheem. Nws txoj kev nyab xeeb tau ntawv pov thawj los ntawm FEMA (Food Flavor and Extract Manufacturers Association), tso cai rau kev txwv tsis pub siv ntau hom zaub mov.
1. Cov khoom xyaw tseem ceeb ntawm nqaij npuas kib
Nws yog cov khoom siv tseem ceeb rau kev npaj nqaij npuas kib, thiab nws cov ester tshwj xeeb tsw tuaj yeem simulate qhov tsw ntawm cov khoom siv roj oxidation hauv cov txheej txheem kho ntawm nqaij npuas kib. Los ntawm kev sib xyaw nrog cov txuj lom haus luam yeeb thiab cov txuj lom ntsim, txheej txheej nqaij npuas kib tuaj yeem tsim tau, uas yog siv dav hauv cov khoom noj yooj yim, seasoning thiab nqaij ua khoom noj.
Piv txwv li, thyl stearate accounted rau 12% ntawm ib hom ntawm hnyuv ntxwm essence, ho txhim kho cov khoom tsw paub.
2. Khoom noj khoom haus technology txhim kho
Hauv kev tsim khoom qab zib, ua ib qho emulsifier, nws tuaj yeem txhim kho cov qauv suab thaj thiab tiv thaiv chocolate txheej tawg; Nyob rau hauv cov khoom siv mis nyuj khov, nws tuaj yeem txo tus nqi ntawm cov dej khov siv lead ua thiab txhim khu kev noj qab haus huv ntawm saj; Nyob rau hauv dej haus, nws solubility yog siv los txhim kho cov dispersion ntawm essence thiab xyuas kom meej lub uniform tso tawm tsw. FEMA qhia tias nws qhov kev siv siab tshaj plaws yog 2.0mg / kg rau tsis yog- dej cawv, 4.0mg / kg rau dej cawv, 8.0mg / kg rau dej txias, thiab 16.0mg / kg rau cov khoom qab zib.
Cosmetics teb: Cov tawv nqaij xav tau thiab txhim kho kev ua tau zoo
Nrog nws cov tawv nqaij zoo nkauj thiab ruaj khov, nws tau dhau los ua "universal additive" hauv cov qauv tshuaj pleev ib ce, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj pleev ib ce thiab cov khoom tu tawv nqaij.
1. Cov tawv nqaij zoo nkauj optimization ntawm cov khoom siv tshuaj pleev ib ce
Hauv cov kua hauv paus, daim di ncauj, qhov muag duab ntxoov ntxoo thiab lwm yam tshuaj pleev ib ce, cov khoom tuaj yeem txhim kho los ntawm kev tsim cov yeeb yaj kiab nyias nyias. Nws cov ductility siab tuaj yeem ua rau kom smoothness ntawm cov kua hauv paus daim ntawv thov los ntawm 30%, thiab txo cov hmoov nplaum. Qhov kev sim qhia tau hais tias daim di ncauj ntxiv nrog 2% thyl stearate tuaj yeem ua kom lub sijhawm pleev lub sijhawm ntev dua 6 teev, thiab nce xim saturation los ntawm 15%.
2. Txhim khu kev ua tau zoo ntawm cov khoom siv tawv nqaij
Hauv cov khoom tu tawv nqaij xws li lub ntsej muag cream thiab tshuaj pleev ib ce, nws tuaj yeem siv los ua emulsifier kom ruaj khov cov roj - dej sib tov thiab tiv thaiv cov khoom xyaw los ntawm txheej. Nws cov khoom antioxidant tuaj yeem tiv thaiv cov khoom xyaw xws li vitamin C thiab peptides los ntawm kev degradation, tswj kev ruaj ntseg ntawm cov khoom ua tau zoo. Tsis tas li ntawd, nws qhov kev nkag mus txhawb zog tuaj yeem ua rau nce qhov nqus ntawm cov khoom xyaw ntuj xws li avocado rog thiab hemp extract, txhim kho moisturizing thiab tiv thaiv wrinkle los.
Kev soj ntsuam kuaj pom tau tias tom qab 4 lub lis piam ntawm kev siv, qhov tob ntawm daim tawv nqaij zoo kab txo qis los ntawm 22% thiab elasticity nce 18% nrog lub ntsej muag cream uas muaj thyl stearate.
3. Silicon dawb formula lwm txoj kev
Nrog rau qhov kev thov ntau ntxiv rau cov khoom xyaw ntuj ntawm cov neeg siv khoom, nws tau dhau los ua qhov nyiam "silicone dawb mis" vim nws lub peev xwm los simulate qhov kev ntxhib los mos ntawm silicone thiab nws biodegradability. Ib hom tshuaj zawv plaub hau tsis muaj silicone txo cov tshuaj yaug qhov seem rau 0.3% thaum tswj cov plaub hau softness los ntawm kev ntxiv thyl stearate, uas yog qis dua li 2.5% ntawm cov khoom siv roj silicone.
Pharmaceutical teb: excipients thiab kev txhawb nqa
Nyob rau hauv kev lag luam kws tshuaj, nws yog tsuas yog siv raws li ib tug excipient, thiab nws cov tshuaj inertness thiab stability kom ruaj ntseg tshuaj.
1. Cov roj nplua nyeem
Hauv cov txheej txheem ntawm cov ntsiav tshuaj, nws tuaj yeem txo qhov kev sib txhuam ntawm cov ntsiav tshuaj thiab cov pwm, tiv thaiv kom tsis txhob lo thiab yaug, thiab txhim kho cov txiaj ntsig ntawm cov khoom tiav. Nws cov nyhuv lubricating yog superior rau cov tshuaj magnesium stearate, tshwj xeeb tshaj yog haum rau siab - koob tshuaj ntsiav tshuaj nias.
Piv txwv li, tom qab qee cov tshuaj tua kab mob cov kab ntau lawm tau hloov mus rau thyl stearate, cov ntsiav tshuaj khib nyiab tau txo qis ntawm 5% mus rau 0.8%.
2. Cov khoom xyaw ntawm ointment puag
Nyob rau hauv cov tshuaj pleev ib ce, raws li ib tug matrix, nws muaj peev xwm tswj cov tshuaj tso tawm tus nqi thiab txhim khu cov tawv nqaij permeability. Cov txheej txheem emulsion tsim los ntawm nws thiab theem aqueous tuaj yeem ruaj khov cov khoom xyaw nquag ntawm cov tshuaj thiab txuas ntxiv lawv lub txee lub neej. Kev tshawb fawb tau pom tias cov tshuaj tiv thaiv - cov tshuaj pleev muajethyl stearatence cov tshuaj nkag los ntawm 40% piv rau cov tshuaj matrices, thiab txo lub sijhawm pib mus rau 15 feeb.
Haus luam yeeb thiab txuj lom: Kev hloov kho thiab txhim kho
Lawm tam sim no nyob rau hauv haus luam yeeb thiab txiv hmab txiv ntoo brandy, nws cov cim aroma ua ib tug tseem ceeb muaj nyob rau hauv kev hloov kho tsw.
1. Tus neeg sawv cev haus luam yeeb
Hauv kev ua luam yeeb, nws tuaj yeem npog cov pa luam yeeb impurities thiab txhim kho qhov puv ntawm aroma. Nws tuaj yeem sib xyaw nrog cov tshuaj tsw qab xws li vanillin thiab phenethyl acetate los tsim cov khoom lag luam luam yeeb nrog cov txiv hmab txiv ntoo thiab cov yam ntxwv milky.
Cov kev sim tau pom tias ntxiv 0.5% thyl stearate rau cov luam yeeb nce qhov kev haus luam yeeb tau zoo los ntawm 12% thiab txo qhov kev nkag siab ntawm impurities los ntawm 30%.
2. Wine tsw hloov kho
Nyob rau hauv brandy brewing, aromatic esters yog generated los ntawm ester pauv kev cuam tshuam los txhim kho cov complexity ntawm cov cawv. Nws cov ntsiab lus yog zoo correlated nrog lub hnub nyoog ntawm cov cawu cub, ua ib tug tseem ceeb qhia rau txiav txim qhov zoo ntawm cov cawu cub. Piv txwv li, cov ntsiab lus ntawm thyl stearate hauv brandy hnub nyoog 10 xyoo tuaj yeem ncav cuag 15mg / L, uas yog peb zaug ntawm brandy tshiab.
Environmental Protection Field: Muaj Peev Xwm rau Kev Tswj Kev Ua Phem
Daim ntawv thov ntawm thyl stearate nyob rau hauv kev tiv thaiv ib puag ncig yog tseem nyob rau hauv lub exploratory theem, thiab nws cov derivatives tau pom muaj peev xwm rau cov pa phem nrhiav kom tau thiab adsorption.
1. Fluorescent sojntsuam xyuas cov hlau hnyav
Fluorescent probes nrog cov lus teb tshwj xeeb rau cov hlau hnyav xws li mercury thiab txhuas tuaj yeem ua ke los ntawm kev hloov kho tshuaj.
Ntawm pH=7, qhov ntsuas qhov txwv ntawm qhov kev sojntsuam rau Pb ² ⁺ yog qis li 0.1 μ M, thiab nws muaj zog tiv thaiv - muaj peev xwm cuam tshuam, uas tuaj yeem siv rau kev kuaj dej tiag tiag.
2. Cov khoom siv adsorption tshem tawm cov organic teeb meem
Kev thauj cov thyl stearate mus rau saum npoo ntawm cov ntaub ntawv ntxeem tau tuaj yeem npaj cov adsorbents zoo heev. Qhov kev sim tau pom tias cov khoom muaj peev xwm adsorption ntawm 120mg / g rau phenol, thiab tuaj yeem rov ua dua los ntawm ethanol desorption. Tom qab 5 lub voj voog, qhov adsorption efficiency tseem nyob saum 90%.
Ethyl stearate, tseem hu ua octadecyl ethanoate los yog ethyl octadecanoate, yog cov tshuaj sib xyaw nrog cov mis molecular C20H40O2. Nws yog ib qho ester tsim los ntawm condensation ntawm stearic acid thiab ethanol. Cov synthesis feem ntau muaj cov tshuaj tiv thaiv esterification, uas tuaj yeem catalyzed los ntawm acids, bases, los yog enzymes. Nov yog cov ncauj lus kom ntxaws txog txoj kev sib txuas, feem ntau tsom rau cov txheej txheem catalytic esterification:
- Stearic acidTom ntej: Carboxylic Acid Reactant.
- Ethanol: Cov cawv reactant.
- Catalyst: Ib yam khoom uas ua kom cov tshuaj tiv thaiv sai dua yam tsis tau noj hauv cov txheej txheem. Cov catalysts muaj xws li sulfuric acid (H2SO4), sodium hydroxide (NaOH), los yog tsis ntev los no, composite inorganic ntsev catalysts.
- Kub: Cov tshuaj tiv thaiv feem ntau yog ua los ntawm qhov kub siab, xws li nruab nrab mus rau qhov siab, nyob ntawm seb cov catalyst siv. Kev kub siab tuaj yeem ua rau cov tshuaj tiv thaiv nce ntxiv tab sis kuj tseem tuaj yeem ua rau muaj kev cuam tshuam sab nraud.
- Siab: Cov tshuaj tiv thaiv tuaj yeem ua tau ntawm atmospheric siab los yog nyob rau hauv ib lub siab me ntsis kom haum lub condensation ntawm ethanol vapor.
- Catalyst Concentration: Tus nqi ntawm cov khoom siv catalyst tau ua kom zoo dua los ua kom muaj txiaj ntsig zoo tshaj plaws thaum txo qis los ntawm - cov khoom tsim.
- Cov tshuaj tiv thaiv esterification cuam tshuam nrog kev tawm tsam nucleophilic ntawm cawv cov pa oxygen ntawm carbonyl carbon ntawm carboxylic acid, ua rau tsim cov ester thiab dej raws li cov khoom los ntawm - khoom.
- Nyob rau hauv lub xub ntiag ntawm ib tug acid catalyst, cov tshuaj tiv thaiv pib los ntawm kev tsim ntawm ib tug acyl cation intermediate.
- Base- cov tshuaj tiv thaiv catalyzed tshwm sim los ntawm kev tsim cov alkoxide nruab nrab.
- Composite Inorganic ntsev Catalyst: Kev tshawb fawb tsis ntev los no tau tsom mus rau kev siv cov ntsev sib xyaw inorganic los ua catalysts rau esterification ntawm stearic acid nrog ethanol. Txoj kev no muaj qhov zoo ntawm cov txiaj ntsig siab dua thiab qis ib puag ncig kev cuam tshuam piv rau cov tshuaj acid lossis cov hauv paus catalysts.
- Cov xwm txheej zoo: Piv txwv li, siv ib qho kev sib xyaw catalyst ntawm hlau (III) sulfate thiab poov tshuaj sulfate nyob rau hauv ib qho piv txwv (piv txwv li, n(Fe2(SO4)3):n(K2SO4)=3.2:1), molar ratio ntawm stearic acid rau ethanol ntawm 1:1.7, thiab cov tshuaj tiv thaiv lub sij hawm ntawm 140 feeb, yields txog li ntawm {86.66.
- Tom qab cov tshuaj tiv thaiv tiav, qhov sib tov yog feem ntau txias thiab cov catalyst yog neutralized los yog tshem tawm.
- Cov ester tuaj yeem raug cais tawm ntawm cov theem aqueous los ntawm distillation lossis lwm yam kev sib cais tsim nyog.
- Cov kauj ruam ua kom huv ntxiv, xws li recrystallization lossis distillation, tej zaum yuav tsim nyog kom tau txais qhov xav tau purity.
Kev xav txog kev nyab xeeb
Nws yog flammable thiab yuav tsum tau ceev faj.
Cov tshuaj tiv thaiv yuav tsum tau ua nyob rau hauv ib qho chaw zoo - qhov cua, thiab cov khoom siv tiv thaiv tus kheej tsim nyog (PPE) yuav tsum hnav.
Cov txheej txheem xwm txheej kub ntxhov rau hluav taws, nchuav, thiab raug yuav tsum nyob hauv qhov chaw.
FAQ
Dab tsi yog ethyl stearate siv rau?
Ethyl stearate tau siv dav hauv kev tshawb fawb tsom rau: Cov Khoom Siv Tshuaj Txhuam Hniav: Cov khoom sib xyaw no ua haujlwm ua ib qho emollient thiab thickening tus neeg sawv cev hauv cov tshuaj pleev thiab tshuaj pleev, txhim kho kev ntxhib los mos thiab noo noo, ua rau nws zoo tagnrho rau cov khoom tu tawv nqaij.
Cim npe nrov: ethyl stearate cas 111-61-5, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom