Umkhiqizi Intengo Enhle N,N-DIMETHYLFORMAMIDE(DMF) CAS 68-12-2
incazelo
Igama livela eqinisweni lokuthi i-dimethyl substitution ye-formamide (i-amide ye-formic acid), futhi womabili amaqembu e-methyl atholakala ku-athomu ye-N (nitrogen). I-N,N-DIMETHYLFORMAMID iyincibilikisi ye-aprotic ebilayo ebilayo (i-hydrophilic), futhi i-Chemicalbook ingaphromotha indlela yokusabela ye-SN2. I-N,N-DIMETHYLFORMAMID ikhiqizwa kusetshenziswa i-formic acid ne-dimethylamine. I-N,N-DIMETHYLFORMAMID ayizinzile (ikakhulukazi ezingeni lokushisa eliphezulu) uma kukhona izisekelo eziqinile njenge-sodium hydroxide noma ama-asidi aqinile njenge-hydrochloric acid noma i-sulfuric acid, futhi i-hydrolyzes ibe i-formic acid ne-dimethylamine. Azinzile emoyeni futhi uma ishiselwa kuze kube ukubila. Uma izinga lokushisa lingaphezu kuka-350 ℃, izolahlekelwa amanzi futhi ikhiqize i-carbon monoxide ne-dimethylamine. I-N,N-DIMETHYLFORMAMID iyi-aprotic polar solvent enhle, engancibilikisa izinto eziningi eziphilayo kanye ne-inorganic, futhi ihlangana namanzi, utshwala, i-ethers, i-aldehydes, ama-ketone, ama-ester, ama-halogenated hydrocarbon nama-hydrocarbon aphunga, njll. Ukuphela okuchajiwe kahle kwe-molecule ye-N,N-DIMETHYLFORMAMID izungezwe ngamaqembu e-methyl, okwenza isithiyo esiqinile, ukuze ama-ion angenayo angasondeli, kodwa ama-ion aqondile kuphela ahlotshaniswayo. I-anion enqunu isebenza kakhulu kune-anion exazululiwe. Ukusabela kwe-ionic okuningi kwenziwa kalula ku-N,N-DIMETHYLFORMAMID kunezixazululi ze-protic ezijwayelekile, isibonelo, ukusabela kwama-carboxylate anama-halogenated hydrocarbons ku-N,N-DIMETHYLFORMAMID kuzinga lokushisa elilingana negumbi, kungakhiqiza ama-ester anesivuno esikhulu, alungele ukuhlanganiswa kwama-ester avinjwe ngokuqinile.
Synthesis.Amagama afanayo
i-amide,n,n-dimethyl-formicaci; I-Dimethylamidkyselinymravenci; i-dimethylamidkyselinymravenci; N,N-DIMETHYLFORMAMIDE,99.9+%,HPLCGRADE; I-NN-DIMETHYLFORChemicalbookMAMIDE99.8%ACS&;N,N-DIMETHYLFORMAMIDE,4X25ML; N,N-DIMETHYLFORMAMIDE,MOLECULARBIOLOGYREAGENT; N,N-DIMETHYLFORMAMIDENEUTRALMARKER*FORCAPILLARY
Izicelo ze-DMF
I-DMF iyi-solvent enhle yezinhlobonhlobo zama-polymers aphezulu njenge-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., futhi ingasetshenziselwa ukuphotha okumanzi kwemicu yokwenziwa efana ne-polyacrylonitrile fibers, kanye nokuhlanganiswa kwe-polyurethane; Isetshenziselwa ukwenza ifilimu yepulasitiki; ingasetshenziswa futhi njenge-stripper kapende yokukhipha upende; ingaphinde incibilikise ezinye izingulube ezincibilika kancane, ukuze izimibalabala zibe nezici zodayi. I-DMF isetshenziselwa ukukhishwa okunephunga elimnandi nokuhlukaniswa nokubuyiselwa kwe-butadiene kusuka kumafrakshini e-C4 kanye ne-isoprene kusuka kuma-fractions e-C5, futhi ingasetshenziswa njenge-reagent ephumelelayo yokuhlukaniswa kwezingxenye ezingezona i-hydrocarbon kupharafini. Inokukhethwa okuhle kwe-solubility ye-isophthalic acid ne-terephthalic acid: i-isophthalic acid incibilika kakhulu ku-DMF kune-terephthalic acid, i-solvent extraction noma i-Crystallization eyingxenye, lezi ezimbili zingahlukaniswa. Embonini ye-petrochemical, i-DMF ingasetshenziswa njengento emunca igesi ukuze ihlukanise futhi icwengisise amagesi. Njenge-ejenti elaphayo yokugeza i-Chemicalbook embonini ye-polyurethane, isetshenziswa kakhulu ekukhiqizeni isikhumba sokwenziwa esimanzi; njenge-solvent embonini ye-acrylic fibre, isetshenziswa kakhulu ekukhiqizeni okuphotha okomile kwe-acrylic fiber; embonini ye-elekthronikhi njengendlela yokucisha izingxenye ezifakwe ngothayela kanye namabhodi wesifunda Ezinye izimboni zihlanganisa abathwali bamagesi ayingozi, izincibilikisi ze-crystallization yezidakamizwa, izinto zokunamathisela, njll. Ekuphenduleni kwezinto eziphilayo, i-DMF ayisetshenziswa nje kuphela njenge-solvent yokusabela, kodwa futhi i-intermediate ebalulekile ekuhlanganiseni kwe-organic. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; embonini yezemithi, ingasetshenziswa ukwenza i-iodine, i-doxycycline, i-cortisone, i-vitamin B6, i-iodine, i-quercetin, i-pyrantel, i-N-formylsarcomin, i-Oncoline, i-methoxyfen, i-benzodiazepine, i-cyclohexyl nitrosourea, i-furoflurourastatic, i-bepart, i-bilemometrol chlorpheniramine, sulfonamides Ukukhiqizwa. I-DMF inomphumela we-catalytic ekuphenduleni kwe-hydrogenation, dehydrogenation, dehydration kanye ne-dehydrohalogenation, ukuze izinga lokushisa lokusabela lehliswe futhi ubumsulwa bomkhiqizo buthuthukiswe.
1. Kuyi-solvent ephilayo enhle kakhulu, esetshenziswa njenge-solvent ye-polyurethane, i-polyacrylonitrile, ne-polyvinyl chloride, futhi ibuye isetshenziswe njenge-extractant, njengento eluhlaza yemithi nezibulala-zinambuzane.
2. Isetshenziswa njenge-reagent yokuhlaziya kanye ne-solvent ye-vinyl resin ne-acetylene
3. Akuyona nje into eluhlaza yamakhemikhali enezinhlobonhlobo zokusetshenziswa, kodwa futhi i-solvent enhle kakhulu enezinhlobonhlobo zokusetshenziswa. I-DMF iyi-solvent enhle yezinhlobonhlobo zama-polymers aphezulu njenge-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., futhi ingasetshenziselwa ukuphotha okumanzi kwemicu yokwenziwa efana ne-polyacrylonitrile fibers, kanye nokuhlanganiswa kwe-polyurethane; Isetshenziselwa ukwenza ifilimu yepulasitiki; ingasetshenziswa futhi njenge-stripper kapende yokukhipha upende; ingaphinde incibilikise ezinye izingulube ezincibilika kancane, ukuze izimibalabala zibe nezici zodayi. I-DMF isetshenziselwa ukukhishwa okunephunga elimnandi nokuhlukaniswa nokubuyiselwa kwe-butadiene kusuka kumafrakshini e-C4 kanye ne-isoprene kusuka kuma-fractions e-C5, futhi ingasetshenziswa njenge-reagent ephumelelayo yokuhlukaniswa kwezingxenye ezingezona i-hydrocarbon kupharafini. Inokukhethwa okuhle kwe-solubility ye-isophthalic acid ne-terephthalic acid: i-isophthalic acid incibilika kakhulu ku-DMF kune-terephthalic acid, i-solvent extraction yenziwa ku-dimethyl chemicalbook acid formamide Noma i-crystallized ingxenye, kokubili kungahlukaniswa. Embonini ye-petrochemical, i-DMF ingasetshenziswa njengento emunca igesi ukuze ihlukanise futhi icwengisise amagesi. Ekuphenduleni kwe-organic, i-DMF ayisetshenziswa nje kuphela njenge-solvent yokusabela, kodwa futhi iyingxenye ebalulekile ekuhlanganiseni kwe-organic. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; embonini yezemithi, ingasetshenziswa ukwenza i-iodine, i-doxycycline, i-cortisone, i-vitamin B6, i-iodine, i-quercetin, i-pyrantel, i-N-formylsarcomin, i-Tumorine, i-Methoxyfen mustard, i-Bian nitrogen mustard, i-cyclohexyl nitrosourea, i-furopartamourages, i-bile acid, i-bile i-chlorpheniramine, njll. I-DMF inomphumela we-catalytic ekuphenduleni kwe-hydrogenation, dehydrogenation, dehydration kanye ne-dehydrohalogenation, ukuze izinga lokushisa lokusabela lehliswe futhi ubumsulwa bomkhiqizo buthuthukiswe.
4. Isincibilikisi se-titration esingenamanzi. I-solvent ye-vinyl ne-acetylene. Ukuzimisela kwe-Photometric. Isixazululo esimile se-chromatographic yegesi (izinga lokushisa eliphezulu lokusebenza ngu-50 ℃, i-solvent iyi-methanol), ukuhlukanisa Ukuhlaziywa kwe-Chemicalbook C2 ~ C5 hydrocarbons, futhi ingahlukanisa evamile, i-isobutene ne-cis, i-trans-2-butene. Ukuhlaziywa kwezinsalela zezibulala-zinambuzane. I-Organic Synthesis. I-Peptide synthesis. Okwemboni yezithombe.
Imininingwane ye-DMF
| Inhlanganisela | Ukucaciswa |
| Ukubukeka | cacile |
| Okujwayelekile | ≥99.9% |
| I-Methanol | ≤0.001% |
| Umbala (PT-CO),Hazen | ≤5 |
| Amanzi,% | ≤0.05% |
| Insimbi, mg/kg | ≤0.05 |
| I-Acidity(HCOOH) | ≤0.001% |
| Isisekelo (DMA) | ≤0.001% |
| PH(25℃, 20% enamanzi) | 6.5-8.0 |
| I-Conductivity(25℃, 20% enamanzi),μs/cm | ≤2 |
Ukupakishwa kwe-DMF
190kg/isigubhu
Isitoreji kufanele sibe endaweni epholile, yomile futhi ikhiphe umoya.
