Puas yog DMSO Polar Aprotic? Ib Daim Ntawv Qhia Txog Kev Siv Khoom Siv
Dimethyl sulfoxide (DMSO, CAS 67-68-5) yog polar aprotic hnyav siv nyob rau hauv cov organic synthesis, polymer ua, thiab tshuaj tsim tshuaj. Nws lub zog hnyav hnyav ua rau nws muaj txiaj ntsig zoo rau kev sib xyaw polar tebchaw thiab txhawb qee yam tshuaj lom neeg. Txawm li cas los xij, nws qhov kub kub taw tes, nqus dej noo, thiab nyiam ua kom khov rau hauv qhov txias txias kuj cuam tshuam rau nws cov nqi tuav thiab cov nqi tsim khoom.
Rau cov neeg yuav khoom lag luam, kev nkag siab txog cov yam ntxwv no yog qhov tseem ceeb thaum piv DMSO nrog rau lwm cov txheej txheem cov kuab tshuaj los yog ntsuas tus neeg xa khoom tshiab. Ntawm Gnee Bio, peb muab cov khoom siv tshuaj lom neeg ua haujlwm thiab paub txog qhov tseem ceeb ntawm kev saib dhau qhov kev coj dawb huv ib leeg. Cov ntsiab lus xws li dej cov ntsiab lus, cov khoom specifications, thiab cov khoom sib xws kuj tseem ceeb thaum xaiv DMSO rau cov txheej txheem tsim khoom tshwj xeeb.
Tshawb Nrhiav Kev Lag Luam Qib DMSO (CAS 67-68-5)
Puas yog DMSO Polar Aprotic?
Yog lawm. DMSO yog polar aprotic hnyav. Nws cov sulfur-oxygen (S=O) daim ntawv cog lus tsim kom muaj zog molecular dipole, thaum tsis muaj O-H thiab N-H daim ntawv cog lus txhais tau tias nws tsis tuaj yeem pub cov nyiaj hydrogen. Qhov kev sib xyaw ua ke no piav qhia nws qhov polarity siab thiab tus cwj pwm hauv ntau cov tshuaj tiv thaiv.
Rau kev siv ceev ceev thaum lub sij hawm tsim cov txheej txheem thiab kev xaiv hnyav, lub hauv paus ntawm lub cev profile ntawm DMSO yog raws li hauv qab no:
| Lub cev khoom | Tus nqi |
|---|---|
| CAS Nr | 67-68-5 |
| Molecular Formula | C₂H₆OS |
| Molecular Luj | 78,13 g / mol |
| Dielectric tsis tu ncua (25 degree) | Kwv yees li . 47 |
| Dipole Moment | Kwv yees li . 3.96 D |
| Boiling Point | Kwv yees li . 189 degree |
| Melting Point | Kwv yees li . 18.5 degree |
| Ceev (20 degree) | Kwv yees li . 1.10 g/cm³ |
| viscosity (25 degree) | Kwv yees li . 2.0 mPa·s |
Lub melting point tsim nyog tshwj xeeb hauv kev lag luam thoob ntiaj teb. Tsis zoo li DMF thiab NMP, DMSO tuaj yeem ua kom muaj zog ntawm qhov kub uas feem ntau ntsib hauv cov tsev khaws khoom tsis muaj cua sov thaum lub caij ntuj no.
Vim li cas DMSO Aprotic txawm tias muaj ntau qhov Polar?
Polarity thiab proton pub dawb piav txog ntau yam ntawm cov kuab tshuaj cov qauv molecular.
Nyob rau hauv DMSO, cov pa atom nyiam electron ceev los ntawm leej faj, tsim kom muaj zog polarized S=O daim ntawv cog lus. Qhov no tso cai rau cov molecule cuam tshuam nrog cov ions zoo thiab lwm yam polars.
Txawm hais tias ib qho hnyav yog protic lossis aprotic nyob ntawm nws lub peev xwm los pub nyiaj hydrogen. Dej, methanol, thiab ethanol yog polar protic solvents vim lawv muaj O-H bonds. DMSO tsis muaj O-H lossis N-H pawg, yog li nws raug cais raws li aprotic.
Nws cov pa atom tseem tuaj yeem txais hydrogen bonds. Txawm hais tias DMSO muaj cov kua qaub C-H tsis muaj zog, qhov no tsis hloov nws qhov kev faib tawm.
DMSO cuam tshuam li cas rau cov tshuaj tiv thaiv?
DMSO feem ntau yog siv rau hauv cov tshuaj tiv thaiv nucleophilic hloov pauv, tshwj xeeb tshaj yog cov tshuaj tiv thaiv SN2. Nws daws cov ions zoo tab sis tsis ruaj khov anionic nucleophiles los ntawm hydrogen bonding zoo li dej los yog cawv ua.
Piv txwv li, nucleophiles xws li iodide thiab cyanide tuaj yeem pom muaj zog reactivity nyob rau hauv DMSO piv nrog cov polar protic cov tshuaj tiv thaiv uas tsim nyog. Cov tshuaj tiv thaiv tiag tiag yog nyob ntawm cov substrate, concentration, kub, thiab cov tshuaj tiv thaiv.
DMSO kuj koom ncaj qha rau hauv cov organic synthesis. Hauv Swern oxidation, nws pab hloov cov cawv thawj rau hauv aldehydes thiab cov cawv thib ob rau hauv ketones.
Nws qhov kub kub ntawm kwv yees li 189℃yog qhov tseem ceeb hauv qee qhov txheej txheem kub, tab sis tsim kev sib tw sib cais. Rov qab DMSO los ntawm cov khoom sib tov feem ntau yuav tsum tau ua tib zoo distillation dua li tshem tawm cov kuab tshuaj qis dua xws li acetone lossis ethyl acetate.
Cov neeg tsim khoom yuav tsum suav rau qhov no thaum kwv yees siv hnyav thiab cov nqi khiav haujlwm.
DMSO vs DMF vs NMP: Qhov txawv yog dab tsi?
DMSO, dimethylformamide (DMF), thiab N-methyl-2-pyrrolidone (NMP) yog dav siv polar aprotic solvents. Lawv cov khoom sib txawv ntawm lub cev tuaj yeem cuam tshuam kev tsim khoom thiab kev hnyav rov qab.
| Khoom | DMSO | DMF | NMP |
|---|---|---|---|
| CAS Nr | 67-68-5 | 68-12-2 | 872-50-4 |
| Molecular Luj | 78.13 | 73.09 | 99.13 |
| Boiling Point | 189 degree | 153 degree | 202 degree |
| Melting Point | 18.5°C dej | -61 degree | -24 degree |
| Qhov ceev (kwv yees) | 1.10 | 0.94 | 1.03 |
| Dej tsis sib haum | Ua kom tiav | Ua kom tiav | Ua kom tiav |
DMSO muaj zog hnyav zog, tab sis nws cov ntsiab lus melting yuav tsum tau saib xyuas thaum huab cua txias. DMF muaj qhov kub kub qis, uas tuaj yeem ua kom yooj yim rau qee qhov kev tshem tawm cov kuab tshuaj. NMP muaj qhov kub siab dua li DMSO thiab siv rau hauv cov txheej txheem tshwj xeeb polymer thiab txheej txheej.
Cov kev cai tseem cuam tshuam rau kev txiav txim siab yuav khoom. DMF thiab NMP yog raug rau EU REACH txwv. DMSO yuav raug txiav txim siab thaum lub sij hawm hloov cov kuab tshuaj, tab sis nws tsis tuaj yeem hloov cov kuab tshuaj tau. Solubility, cov khoom zoo, kev nyab xeeb ntawm cov neeg ua haujlwm, thiab kev ua haujlwm rov qab yuav tsum raug kuaj ua ntej hloov cov qauv tsim.
DMSO Siv nyob qhov twg hauv kev lag luam?
DMSO ua haujlwm sib txawv nyob ntawm cov khoom ua tiav thiab cov khoom hnyav uas yuav tsum tau ua.
- Tshuaj synthesis:Siv los ua cov tshuaj tiv thaiv nruab nrab hauv kev hloov pauv nucleophilic thiab lwm yam kev cuam tshuam cov organic, nrog rau hauv oxidation chemistry.
- Polymer thiab fiber ntau ua:Siv los yaj PAN hauv qee cov txheej txheem acrylic fiber ntau spinning. Polymer concentration thiab kua viscosity yuav tsum tau tswj kom ruaj khov spinning.
- Resins thiab coatings:Siv nyob rau hauv formulations yuav tsum muaj zog solvency rau tej organic tebchaw. Kev sib raug zoo nrog cov resin thiab lwm cov khoom xyaw yuav tsum raug txheeb xyuas.
- Electronics manufacturing:Pom muaj nyob rau hauv tej yam photoresist stripping thiab hluav taws xob tu formulations. Nws qhov haum yog nyob ntawm qhov tiv thaiv chemistry thiab substrate.
- Pharmaceutical thiab nplua chemical ntau lawm:Siv los ua cov tshuaj tiv thaiv lossis ua cov kuab tshuaj hauv cov ntawv thov uas nws cov kuab tshuaj ua tau raws li cov txheej txheem yuav tsum tau ua.
DMSO tsis yog ib qho kev hloov pauv thoob ntiaj teb rau lwm cov kuab tshuaj. Formulation xeem tseem tsim nyog, tshwj xeeb tshaj yog thaum hloov cov kuab tshuaj nyob rau hauv ib tug tsim kab ntau lawm.
Cov neeg yuav khoom yuav tsum paub dab tsi txog DMSO Cia thiab tuav?
DMSO muaj qhov melting point ntawm kwv yees li 18.5 degree. Thaum lub caij ntuj no kev thauj mus los, cov khoom yuav crystallize los yog khov yog tias qhov kub thiab txias poob qis dua qib no. Qhov no tsis tas yuav qhia txog cov khoom lag luam deterioration.
Rau cov neeg xa khoom tau txais DMSO nyob rau hauv cov cheeb tsam txias dua, cov chaw khaws khoom kub thiab kev thauj mus los yuav tsum tau txiav txim siab ua ntej xa khoom xa tuaj. Kev ntsuas qhov ntsuas kub kom tsim nyog thiab tswj kom sov tuaj yeem xav tau los kho cov khoom mus rau lub xeev ua kua.
Moisture yog lwm yam kev txhawj xeeb. DMSO nqus dej los ntawm nws ib puag ncig, uas tuaj yeem cuam tshuam cov txheej txheem uas yuav tsum muaj cov dej tsis huv. Khaws cov ntim ntim ntim thiab xyuas cov ntsiab lus dej thaum tau txais cov khoom siv rau kev siv dej-rhiab.
Thaum ntsuas DMSO muab los ntawm Gnee Bio, cov neeg yuav khoom yuav tsum tau them nyiaj tshwj xeeb rau cov ntsiab lus dej tau tshaj tawm ntawm COA tshwj xeeb batch, tshwj xeeb tshaj yog tias cov kuab tshuaj yuav siv rau hauv cov dej noo-rhiab heev. Qhov tseeb specification yuav tsum tau sib phim rau qhov yuav tsum tau ntau lawm es tsis txiav txim los ntawm purity ib leeg.
DMSO tuaj yeem ua rau muaj kev nkag mus ntawm qee yam tshuaj los ntawm tib neeg cov tawv nqaij. Cov neeg ua haujlwm yuav tsum zam kev sib cuag ncaj qha thiab ua raws li tus neeg muag khoom lub SDS rau kev xaiv hnab looj tes, tiv thaiv khaub ncaws, thiab kev tswj cov dej nchuav.
Thov qhov tseeb DMSO COA thiab SDS
Dab tsi Specifications Cov Neeg Yuav Khoom Yuav Tsum Tshawb Xyuas Ua Ntej Yuav DMSO?
Daim duab purity ntawm 99% lossis siab dua tsis muab cov duab tiav ntawm cov kuab tshuaj zoo. Cov ntsiab lus dej, xim, acidity, thiab kab impurities kuj tuaj yeem cuam tshuam rau kev tsim khoom.
Ua ntej pom zoo rau kev lag luam DMSO kev yuav khoom, cov neeg yuav khoom yuav tsum tshuaj xyuas cov lus qhia hauv qab no:
| Specification | Kev yuav khoom |
|---|---|
| Purity | Paub meej tias cov ntsiab lus tseem ceeb concentration |
| Cov ntsiab lus dej | Ib qho tseem ceeb rau cov txheej txheem dej-rhiab heev |
| Xim | Pab ntsuam xyuas cov tsos thiab ua tau impurities |
| Acidity / Alkalinity | Muaj feem xyuam rau txheej txheem compatibility |
| Qhov ntom | Txhawb kev tswj kom zoo |
| Refractive Index | Muab kev kuaj xyuas zoo ntxiv |
Muaj-qib, tsis muaj dej, tshuaj-qib, thiab hluav taws xob-qib DMSO muaj cov kev xav tau zoo sib txawv. Cov qib uas tsim nyog nyob ntawm daim ntawv thov thiab kev txwv tsis pub dhau.
Rau kev txiav txim ntau, steel nruas, IBC tso tsheb hlau luam, thiab ISO tso tsheb hlau luam yog cov kev xaiv ntim khoom. Qhov kev xaiv nyob ntawm qhov kev txiav txim ntim, qhov chaw, chaw cia khoom, thiab kev npaj thauj mus los.
Thaum muab DMSO los ntawm Gnee Bio, cov neeg yuav khoom tuaj yeem thov cov khoom tshwj xeeb, ib pawg COA, SDS, thiab TDS rau kev tshuaj xyuas ua ntej lees paub qhov kev txiav txim. Rau ib daim ntawv thov tshiab, thov kom tus qauv thiab kuaj nws tawm tsam cov kev tsim khoom uas twb muaj lawm yog ib txoj hauv kev los xyuas qhov sib xws ua ntej tsiv mus rau cov khoom siv ntau.
Cov lus nug nquag nug txog DMSO
Puas yog DMSO polar lossis nonpolar?
DMSO yog cov polar heev vim muaj zog molecular dipole tsim los ntawm nws cov S=O daim ntawv cog lus.
DMSO puas tuaj yeem tsim cov ntawv cog lus hydrogen?
Yog lawm. Nws cov pa atom txais hydrogen bonds, tab sis DMSO tsis tuaj yeem pub dawb rau lawv vim nws tsis muaj O-H lossis N-H pawg.
Puas yog DMSO khov rau lub caij ntuj no?
Yog lawm. Ntshiab DMSO khov ntawm kwv yees li 18.5℃thiab tuaj yeem khov thaum huab cua txias cia lossis tsheb thauj mus los.
DMSO puas tuaj yeem hloov DMF lossis NMP?
Nws tuaj yeem raug soj ntsuam raws li lwm txoj hauv kev hauv qee cov txheej txheem, tab sis kev hloov pauv yuav tsum muaj kev sim ntawm solubility, cov tshuaj tiv thaiv kev ua tau zoo, cov khoom zoo, thiab cov xwm txheej rov qab los.
Puas yog DMSO miscible nrog dej?
Yog lawm. DMSO yog miscible kiag li nrog dej thiab tseem sib xws nrog ntau cov kuab tshuaj organic.
Xaus
DMSO's polar aprotic qauv muab nws lub zog hnyav hnyav thiab ua rau nws muaj txiaj ntsig zoo hauv kev tsim tshuaj lom neeg, kev ua cov polymer, thiab kev tsim tshwj xeeb. Nws cov ntsiab lus kub kub, qhov nqus dej noo, thiab qhov kub siab melting point kuj tseem yuav tsum tau txiav txim siab thaum npaj ntau lawm thiab khaws cia ntau.
Rau cov neeg siv khoom lag luam, kev tshuaj xyuas purity, dej cov ntsiab lus, cov khoom sib xws, thiab kev thauj mus los yog qhov tseem ceeb xws li kev sib piv cov khoom hnyav. Gnee Bio muab DMSO cov ntaub ntawv cov khoom lag luam thiab kev yuav khoom txhawb nqa rau cov neeg yuav khoom ntsuas cov qauv, cov lus qhia tshwj xeeb, thiab cov khoom siv ntau.
Tau txais ib qho DMSO Quote los ntawm Gnee Bio
