Qauv ntawm DMSO: Tus Neeg Yuav Khoom Qhia Txog Tshuaj Tiv Thaiv Tus Kheej, Purity thiab Specifications

Dimethyl sulfoxide (DMSO, CAS 67-68-5) yog ib qho organosulfur compound nrog cov mis molecular C₂H₆OS. Cov qauv ntawm DMSO muaj ob pawg methyl (CH₃) sib txuas rau lub hauv paus sulfur atom, uas tseem txuas nrog cov pa atom. Qhov kev npaj no muab DMSO nws muaj zog molecular polarity thiab ua rau nws yog ib qho tseem ceeb polar aprotic hnyav nyob rau hauv cov organic synthesis thiab tshuaj raug tsim.

Kev nkag siab txog tus qauv ntawm DMSO pab piav qhia nws cov khoom molecular, dej miscibility, nqus dej noo, thiab hnyav tus cwj pwm. Cov yam ntxwv no tseem cuam tshuam rau cov neeg yuav khoom lag luam thaum ntsuas DMSO cov lus qhia tshwj xeeb, qib purity, thiab cov khoom tsim nyog.

Tshawb nrhiav Industrial-Qib DMSO

Cov qauv tshuaj ntawm DMSO feem ntau sawv cev los ntawm cov qauv qauv (CH₃)₂S=O. Txhua lub molecule muaj ob pawg methyl, ib qho sulfur atom, thiab ib qho oxygen atom txuas los ntawm ib pawg sulfoxide ua haujlwm.

Tshuaj identifier	Cov ntaub ntawv
Tshuaj npe	Dimethyl sulfoxide
Cov ntawv luv	DMSO
CAS nr	67-68-5
Cov mis mos molecular	C₂H₆OS
Chemical Structure
Cov qauv qauv	(CH₃)₂S=O
Molecular hnyav	78.13–78.14 g / mol
SMILES	CS(=O)C
Pab pawg ua haujlwm	Sulfoxide

Cov sulfur atom yog lub hauv paus atom, txuas ob pawg methyl mus rau oxygen atom. Tsis zoo li nonpolar hydrocarbon solvents, DMSO muaj cov polar sulfoxide ua haujlwm pab pawg. Cov txheej txheem no yog lub luag haujlwm rau ntau yam ntawm nws cov khoom siv tshuaj lom neeg.

Cov qauv Lewis ntawm DMSO feem ntau yog sau ua CH₃–S(=O)–CH₃, qhia lub hauv paus sulfur atom txuas rau ob pawg methyl thiab ib lub atom oxygen. Ib qho kev sawv cev sib cais kuj yog siv los qhia txog polarized sulfur-oxygen daim ntawv cog lus.

Feem ntau sawv cev:

CH₃–S(=O)–CH₃

Tus sawv cev them nyiaj sib cais:

CH₃–S⁺(–O⁻)–CH₃

Ob qho piv txwv piav txog tib lub molecule. Daim ntawv S=O yog siv dav hauv cov qauv tshuaj, thaum S⁺–O⁻ sawv cev qhia txog qhov tsis sib xws ntawm cov khoom siv hluav taws xob sib npaug thoob plaws cov sulfur-oxygen daim ntawv cog lus.

Oxygen attracts electron ceev ntau zog tshaj sulfur, tsim ib tug heev polarized daim ntawv cog lus. Qhov polarization no ua rau muaj txiaj ntsig zoo rau DMSO's molecular dipole thiab piav qhia vim li cas nws coj txawv ntawm cov kuab tshuaj nonpolar.

Cov qauv peb-dimensional ntawm DMSO yog non-planar nyob ib ncig ntawm nws lub hauv paus sulfur atom, nrog ob pawg methyl, ib qho pa oxygen atom, thiab ib khub ib leeg ua rau nws txoj kev npaj molecular. Qhov no geometry, ua ke nrog polarized S-O daim ntawv cog lus, muab DMSO ib qho tseem ceeb molecular dipole.

Ob pawg methyl zoo ib yam, thiab cov sulfur atom tsis yog qhov chaw stereogenic hauv DMSO.

Qhov kev npaj peb sab no pab piav qhia vim li cas DMSO cuam tshuam nrog cov tshuaj polar thiab muaj cov kuab tshuaj sib txawv los ntawm cov tsis muaj polar hydrocarbons.

Tus qauv ntawm DMSO txiav txim siab txog ntau yam khoom tseem ceeb, suav nrog cov polarity siab, polar aprotic tus cwj pwm, hygroscopicity, thiab qhov kub siab heev. Cov yam ntxwv no feem ntau tshwm sim los ntawm nws cov polarized sulfur-oxygen daim ntawv cog lus thiab hydrogen-bond-accepting peev xwm ntawm nws cov pa atom.

• Polarity:DMSO yog cov polar heev vim tias S-O daim ntawv cog lus muaj qhov tsis sib xws ntawm electron ceev. Nws lub sijhawm molecular dipole yog kwv yees li 4 debye, tso cai rau nws cuam tshuam nrog ntau lub teb chaws polar thiab ions.
• Polar aprotic cwj pwm:DMSO raug cais raws li cov kuab tshuaj polar aprotic vim nws muaj cov qauv polar muaj zog tab sis tsis muaj O-H lossis N-H daim ntawv cog lus. Nws cov pa oxygen atom tuaj yeem lees txais cov ntawv cog lus hydrogen, tab sis DMSO tsis tuaj yeem pub cov nyiaj hydrogen hauv txoj kev pom zoo.
• Hygroscopicity:DMSO absorbs noo noo los ntawm ib puag ncig ib puag ncig vim nws cov pa atom tuaj yeem txais hydrogen bonds los ntawm cov dej molecules. Qhov no kuj piav qhia tias yog vim li cas DMSO thiaj li miscible nrog dej. Rau cov ntawv thov dej-rhiab heev, cov neeg yuav khoom yuav tsum xyuas cov dej-cov ntsiab lus txwv hauv cov khoom specifications. Karl Fischer titration feem ntau yog siv los ntsuas cov ntsiab lus dej.
• High boiling point:DMSO muaj qhov kub siab ntawm kwv yees li 189℃ntawm atmospheric siab. Kev sib cuam tshuam ntawm intermolecular muaj zog ua rau muaj qhov kub siab heev piv nrog ntau cov kuab tshuaj organic.

Lub cev tseem ceeb ntawm DMSO suav nrog qhov hnyav molecular ntawm kwv yees li 78.13-78.14 g / mol, qhov chaw melting ze ntawm 18.5 degree, thiab qhov kub ntawm qhov kub ntawm 189℃ntawm atmospheric siab. Cov txiaj ntsig no pab txheeb xyuas cov tshuaj thiab piav qhia nws tus cwj pwm tuav thiab khaws cia.

Cov nqi yuav txawv me ntsis nyob ntawm cov ntaub ntawv siv thiab cov kev xeem. Ib qho tshwj xeeb yam ntxwv yog nws cov ntsiab lus melting: DMSO tuaj yeem crystallize los yog ua kom qis dua li ntawm 18.5 degree. Qhov no yog lub cev hloov pauv theem thiab tsis tas yuav qhia txog kev degradation ntawm cov khoom. Kev tswj kom sov raws li cov lus qhia ntawm tus neeg muag khoom tuaj yeem kho nws cov kua hauv lub xeev.

Thov Khoom Specifications, COA thiab SDS

Tus qauv ntawm DMSO piav qhia txog nws tus cwj pwm hnyav, tab sis nws tsis txiav txim siab ua lag luam khoom zoo los ntawm nws tus kheej. Cov neeg yuav khoom lag luam yuav tsum ntsuas qhov ntsuas, cov ntsiab lus dej, thiab cov impurities cuam tshuam thaum sib piv DMSO purity qib thiab cov khoom specifications.

Kev ntsuam xyuas siab tsis tau txhais tau tias cov khoom muaj cov dej noo txaus txaus lossis ua tau raws li txhua daim ntawv thov. Cov neeg yuav khoom yuav tsum tshuaj xyuas tus neeg muag khoom daim ntawv pov thawj DMSO ntawm kev txheeb xyuas (COA) thiab sib piv cov txiaj ntsig tau tshaj tawm nrog cov lus pom zoo.

Piv txwv li, cov ntsiab lus dej kuj tseem ceeb tshwj xeeb hauv cov tshuaj tiv thaiv dej noo, thaum lwm yam kev siv yuav xav tau kev tswj hwm impurity ntxiv. Qhov tsim nyog specification nyob ntawm tus txheej txheem npaj es tsis yog ib qib purity universal.

Dab tsi yog Molecular Formula ntawm DMSO?

Cov mis mos molecular ntawm DMSO yog C₂H₆OS, thiab nws qhov hnyav molecular yog kwv yees li 78.13–78.14 g / mol. CAS Nr .: 67-68-5.

Lewis Structure ntawm DMSO yog dab tsi?

Cov qauv siv Lewis feem ntau ntawm DMSO yog CH₃–S(=O)–CH₃. Ib qho piv txwv ntawm tus nqi sib cais, CH₃–S⁺(–O⁻)–CH₃, kuj tuaj yeem qhia txog cov polarized sulfur-oxygen daim ntawv cog lus.

Yog vim li cas DMSO High Polar?

DMSO yog cov polar heev vim tias oxygen attracts electron ceev ntau dua li cov sulfur, tsim kom muaj ib qho polarized S-O daim ntawv cog lus thiab muaj ntau yam molecular dipole.

Puas yog DMSO Polar lossis Nonpolar?

DMSO yog cov kuab tshuaj muaj zog heev. Nws pawg polar sulfoxide distinguishes nws los ntawm nonpolar hydrocarbon solvents xws li toluene thiab hexane.

Vim li cas DMSO nqus dej?

DMSO absorbs ya raws vim nws cov pa atom tuaj yeem txais hydrogen bonds los ntawm cov dej molecules. Qhov kev coj cwj pwm hygroscopic no ua rau kev tswj dej-cov ntsiab lus tseem ceeb hauv ntau daim ntawv thov kev lag luam.

Tus qauv ntawm DMSO, sawv cev los ntawm (CH₃)₂S=O, piav qhia nws cov polarity siab, dej miscibility, hygroscopic cwj pwm, thiab lub luag hauj lwm raws li ib tug polar aprotic hnyav. Nws cov mis molecular, Lewis qauv, thiab sulfur-oxygen daim ntawv cog lus yog qhov tseem ceeb rau kev nkag siab txog cov yam ntxwv no.

Rau cov neeg yuav khoom lag luam, nkag siab DMSO cov qauv tshuaj lom neeg muab qhov pib rau kev ntsuas nws cov khoom thiab cov lus qhia tshwj xeeb. Thaum muab DMSO (CAS 67-68-5), sib piv qhov kev ntsuam xyuas, cov ntsiab lus dej, thiab daim ntawv thov tshwj xeeb uas yuav tsum tau ua ua ntej lees paub qhov kev txiav txim.

Tau txais ib qho DMSO Quote los ntawm Gnee Bio