CAS 127-19-5 N, N-Dimethylacetamide DMAC thiab CAS 68-12-2 N, N-Dimethylformamide DMF yog ob qho tib si siv cov kuab tshuaj tsis-protonic uas muaj cov tshuaj zoo sib xws tab sis muaj qhov sib txawv tseem ceeb.
Hauv luv luv, lawv zoo li "cov kwv tij" nrog cov qauv zoo sib xws, tab sis DMAC muaj ib pab pawg methyl ntxiv (-CH₃) piv rau DMF. Qhov kev sib txawv ntawm cov qauv no ua rau muaj kev ua tau zoo tshaj plaws hauv qee yam rau DMAC thaum tseem ua rau muaj kev sib txawv toxicity thiab kev cuam tshuam ib puag ncig.
Dimethylacetamide (DMAC) vs Dimethylformamide (DMF): Cov khoom sib txawv
| Khoom | DMAC | DMF |
|---|---|---|
| CAS Nr | 127-19-5 | 68-12-2 |
| Molecular Formula | C4H9 Nr | C3H7 Nr |
| Molecular Luj | 87,12 g / mol | 73,09 g / mol |
| Cov qauv qauv | CH₃CON(CH₃)₂ | HCON(CH₃)₂ |
| Boiling Point | 165-166 degree | 153 degree |
| Qhov ntom | 0.94 g / cm³ | 0.944 g / cm³ |
| Solubility | Miscible nrog dej thiab organic solvents | Miscible nrog dej thiab organic solvents |
| Solvent Hom | Polar aprotic kuab tshuaj | Polar aprotic kuab tshuaj |
Qhov sib txawv tseem ceeb tshaj plaws: DMF yog ib qho derivative ntawm formamide (formic acid HCOOH nrog cov pab pawg hydroxyl tshem tawm), thaum DMAC yog derivative ntawm acetamide (acetic acid CH₃COOH nrog cov pab pawg hydroxyl tshem tawm). Qhov "ntxiv methyl pawg" no yog lub hauv paus ua rau tag nrho cov kev ua tau zoo sib txawv.
Vim tias lawv txhua tus yaj cov polymers, ntsev, thiab cov organic tebchaw tshwj xeeb, lawv tau siv dav hauv tshuaj synthesis.
Dimethylacetamide (DMAC) vs Dimethylformamide (DMF): Daim ntawv thov sib piv
1. Kev tsim tshuaj
DMAC hnyav yog siv rau hauv API synthesis, peptide chemistry, tshuaj tua kab mob, thiab tshuaj tua kab mob intermediates.
DMF hnyav yog dav siv nyob rau hauv acrylic fiber ntau lawm, hluavtaws tawv, thiab dav siv polymer ua.
2. Polymer thiab Fiber ntau lawm
Hauv kev lag luam polymer, dimethylacetamide DMAC feem ntau yog cov kuab tshuaj nyiam.
N,N-Dimethylacetamide DMAc yog lub ntsiab hnyav rauspandex, polyimide, aramid fiber, polyacrylonitrile; zoo tagnrho rau siab -kub polymerization.
3. Txheej & Zaj duab xis
DMAC yog siv nyob rau hauv siab - txheej txheej, insulating films, thiab ua hauj lwm films nrog siab thermal stability.
DMF Nyiam rau cov txheej txheem, cov nplaum, thiab cov yeeb yaj kiab uas xav tauceev evaporation.
4. Organic Synthesis
Ob leeg cov kuab tshuaj feem ntau yog siv rau hauv cov organic synthesis, vim lawv yogpolar aprotic kuab tshuaj, lawv pab ua kom cov tshuaj tiv thaiv efficiency.
Yuav xaiv cov kuab tshuaj li cas?
XaivDMF kuab tshuajYog tias koj xav tau yaj polyurethane (PU) thiab acrylic (PAN), ua ntej tus nqi ua haujlwm zoo, thiab cia siab rau cov txheej txheem kev lag luam uas paub tab - nws tseem yog qhov kev xaiv tseem ceeb rau cov ntawv thov no.
Xaiv rauDMAC kuab tshuajthaum solub siab -kev ua tau zoo polymers zoo li aramid thiab polyimide, los yog yuav tsum tau thermal thiab daws stability; feem ntau nws yog qhov zoo tshaj plaws los yog tsuas yog kev xaiv siv tau.
Rau cov tshuaj synthesis xav tau siab - boiling thiab ruaj khov kuab tshuaj,ob leeg siv tau, nrog rau qhov kev txiav txim zaum kawg raws li cov tshuaj tiv thaiv tshwj xeeb thiab cov ntaub ntawv toxicological.
Rau kev nyab xeeb kev noj qab haus huv, ob lub kuab tshuaj yuav tsum muaj kev tiv thaiv nruj, suav nrog kev ua pa tag nrho, PPE kom raug, thiab kev saib xyuas kev noj qab haus huv ua haujlwm. DMAC muaj cov tshuaj tua kab mob, yog li yuav tsum tau ceev faj ntxiv rau cov neeg ua haujlwm cev xeeb tub.
Raws li rau eco-txoj kev ua phooj ywg, kev xaiv xws li ionic kua thiab NMP tab tom tsim, tab sis tsis muaj qhov hnyav tuaj yeem hloov pauv Dimethylacetamide DMAC thiab Dimethylformamide DMF hauv txhua qhov kev ua tau zoo.
FAQ
DMAC puas tuaj yeem hloov DMF hauv tshuaj tiv thaiv?
Yog lawm, Dimethylacetamide (DMAc lossis DMAC) tuaj yeem hloov Dimethylformamide (DMF) hauv ntau cov tshuaj tiv thaiv, tab sis nws tsis yog ib qho kev hloov pauv thoob ntiaj teb.
Cov kuab tshuaj twg muaj qhov kub siab dua, DMAC lossis DMF?
DMAC muaj qhov kub siab dua.
| Solvent | Boiling Point |
|---|---|
| DMAC | ~ 165-166 degree |
| DMF | ~ 153 degree |
Puas yog Dimethylacetamide zoo ib yam li DMF?
Tsis yog, dimethylacetamide (DMAc lossis DMA) tsis yog tib yam tshuaj xws li DMF (dimethylformamide). Txawm hais tias ob qho tib si muaj feem xyuam nrog cov polar non-protonic cov kuab tshuaj, lawv txawv hauv cov qauv tshuaj, qhov kub thiab txias, thiab cov yam ntxwv ntawm kev nyab xeeb.
Vim li cas thiaj xaiv gneebio?
Gneebio yog cov chaw tsim tshuaj paus thiab cov muag khoom nyob rau hauv Suav teb, tshwj xeeb hauv kev xa tawm thoob ntiaj teb ntawm siab -zoo Dimethylacetamide (DMAC) thiab Dimethylformamide (DMF). Kev cog lus rau qhov zoo ib yam, tus nqi sib tw, thiab cov kev pabcuam xa tawm, Gneebio yog tus khub ntseeg siab rau cov neeg siv khoom thoob ntiaj teb nrhiav kev ntseeg siab DMAC thiab DMF.
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Peb lub tuam txhab
Gneebioyog cov kws tshaj lij cov khoom siv raw khoom nyob hauv Henan Xeev, Suav. Peb tau dhau daim ntawv pov thawj kev ua haujlwm zoo thiab muaj tus kheej - tswj hwm txoj cai ntshuam thiab xa tawm. Peb cov khoom yog nrov nrog cov neeg siv khoom. Raws li cov khoom lag luam thoob ntiaj teb, peb xa cov ntaub ntawv pov thawj tshuaj raw khoom uas ua raws li REACH, RoHS, ISO thiab lwm yam qauv thoob ntiaj teb. Peb lub peev xwm ntau lawm txhua hli ua kom zoo ib yam thiab muaj kev ntseeg siab rau kev txiav txim ntau.
