Umkhiqizi Intengo Elungile N, N-DIMETYLLFFONmaMide (DMF) CAS 68-12-2
ukufanisa
Leli gama livela eqinisweni lokuthi i-dimethyl subiniless of formamide (indlela ye-formic acid), futhi amaqembu we-methyl atholakala ku-athomu le-n (nitrogen). N, n-dimethylformanzamid i-polar ebilayo (i-hydrophilic) ye-aprotic, ne-chemimadi ye-chemimadi ingakhuthaza indlela yokuphendula ye-SN2. N, n-dimethylforvamamid kukhiqizwa kusetshenziswa i-formic acid kanye dimethyyamine. N, n-dimethylvamid ayizinzile (ikakhulukazi emazingeni okushisa aphezulu) phambi kwezisekelo eziqinile ezinjenge-sodium hydroxide noma ama-acid anamandla acid noma ama-sulfuric acid, kanye ne-hydrolyzes ku-formic acid kanye dimethyyamine. Kuzinze emoyeni futhi lapho kufuthelwa ukubilisa. Lapho izinga lokushisa liphakeme kune-350 ℃, lizolahlekelwa amanzi futhi likhiphe amanzi futhi likhiqize i-carbon monoxide ne-dimethylamine. N, n-dimethylforvamamid iyinhlangano enhle ye-aprotic polar solvent, engancibilikisa izinto eziningi eziphilayo nezingazi, futhi ayinakuphikwa ngamanzi, ama-ketones, ama-esters, ama-hydrocarbons nama-hydrocarbons amnandi, njll. Ukuphela okukhokhiswa okuhle kwe-N, N-dimethylvamid Molecule uzungezwe amaqembu we-methyl, akha izithiyo ezingezinhle, ukuze ama-ion angenzi angenakusondela, kepha ama-ion amahle ahlotshaniswa kuphela. I-anion enqunu isebenza kakhulu kune-antion ehleli. Ukuphendula okuningi kwe-ionic kuthathwa kalula ku-n, n-dimethylformamid kunasebuthongo obujwayelekile, ngokwesibonelo, ukusabela kwama-hydrocarbons ane-hydrocarbons ku-n, n-dimethylformamid emazingeni okushisa asekamelweni, kungakhiqiza ama-ePers aphezulu, ikakhulukazi alungele kakhulu ukuhlanganiswa kwama-esters avinjelwe ngokuqine.
I-Synthesis.Synonyms
amide, n, n-dimethyl-formicaci; I-DimethyAmIdyyelinymraverncien; I-DimethyAmIdyyelinymraverncien; N, n-dimethylformaMide, 99.9 + +%, HPLCGRAD; Nn-dimethylforchemicalBookkokhozincwadi99.8% ACS &;N, n-dimethylformamide, 4x25ml; N, n-dimethylformamide, molecularbiology; N, n-dimethylformaMDeneidermarder * Forcapillary
Izicelo ze-DMF
I-DMF iyi-solvent enhle yama-polymers aphezulu afana ne-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., Njll., Futhi ingasetshenziselwa i-polyurethane; Isetshenziselwa ukwenza amafilimu epulasitiki; Ingasetshenziswa futhi njengopende stripper wokususa upende; Kungabuye kuchitheke imibala ethile ephansi ye-solubity, ukuze amabala anezimpawu zodayi. I-DMF isetshenziselwa ukukhishwa okunamakha amnandi kanye nokwehlukanisa kanye nokubuyiselwa kwe-batidene kusuka ku-C4 friction ne-isoprene kusuka ku-C5 FREDENT, futhi nakho kungasetshenziswa njenge-realent ephumelelayo yokuhlukaniswa kwezingxenye ezingezona ze-hydrocarbon kusuka kupharafini. Inokukhetha okuhle kwe-solubility ye-isophthalic acid ne-iSophthalic acid: i-isophthalic acid incane kakhulu ku-DMF kune-terephthalic acid, ukukhishwa kwe-solvent noma i-crystallization enengxenye, lokhu kungahlukaniswa. Embonini ye-petrochemical, i-DMF ingasetshenziswa njengegesi yokumunca ukuhlukanisa nokuhlaziya amagesi. Njengomenzeli welapha yokugeza amakhemikhali embonini ye-polyurethane, isetshenziswa ikakhulukazi ekukhiqizweni kwesikhumba sokwenziwa esimanzi; Njenge-solvent emkhakheni we-acrylic fiber, isetshenziswa ikakhulukazi ekukhiqizeni okusomile kwefayibha ye-acrylic; Emkhakheni we-elekthronikhi njengokuqedwa kwezingxenye ze-tin-plated namabhodi wesifunda afaka izithwali zamagesi ayingozi, ama-sollesives okusabela kwezidakamizwa, i-DMF ayisetshenziswa kabanzi njenge-solvent yokusabela, kepha Futhi kungumphakathi obalulekile ekuhlolweni kwe-organic. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; Embonini yezemithi, ingasetshenziswa ukuhlanganisa iodine, i-docycycline, i-cortisone, i-vecetin, i-methantel, i-quercoxyly, i-thycetyl nitroSorea, I-BILEVITA, Chlorpheniramine, Sulfonamides Production. I-DMF inomthelela we-catalytic ekuphendukeni kwe-hydrogenation, i-dehydrogenation, dehydration kanye nama-dehydrovualog, ukuze amazinga okushisa asabela ancishisiwe bese ubumsulwa bomkhiqizo buthuthukile.
1. Yisolvent enhle kakhulu ye-organic, esetshenziswa njenge-solvent ye-polyurethane, polylonitriterile, ne-polyvinyl chloride, futhi futhi esetshenziswa njengento ekhishwe, njengezinto zokubulala izinambuzane nemithi yokubulala izinambuzane.
2. Isetshenziswa njenge-reagent ehlaziya futhi i-solvent ye-vinyl resin ne-acetylene
I-3. Akuyona kuphela impahla enamakhemikhali eluhlaza onobubanzi bokusetshenziswa, kepha futhi ne-solvent enhle kakhulu enokusetshenziswa okuhlukahlukene. I-DMF iyi-solvent enhle yama-polymers aphezulu afana ne-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., Njll., Futhi ingasetshenziselwa i-polyurethane; Isetshenziselwa ukwenza amafilimu epulasitiki; Ingasetshenziswa futhi njengopende stripper wokususa upende; Kungabuye kuchitheke imibala ethile ephansi ye-solubity, ukuze amabala anezimpawu zodayi. I-DMF isetshenziselwa ukukhishwa okunamakha amnandi kanye nokwehlukanisa kanye nokubuyiselwa kwe-batidene kusuka ku-C4 friction ne-isoprene kusuka ku-C5 FREDENT, futhi nakho kungasetshenziswa njenge-realent ephumelelayo yokuhlukaniswa kwezingxenye ezingezona ze-hydrocarbon kusuka kupharafini. Inokukhetha okuhle kwe-solubility ye-isophthalic acid kanye ne-acid ye-iSophthalic Embonini ye-petrochemical, i-DMF ingasetshenziswa njengegesi yokumunca ukuhlukanisa nokuhlaziya amagesi. Esikhathini sokusabela kwe-organic, i-DMF ayisetshenziswa kabanzi njenge-solvent yokusabela, kepha futhi nomphakathi obalulekile ekuhlolweni kwe-organic. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; Embonini yezemithi, ingasetshenziswa ukuhlanganisa iodine, i-Doxycycline, i-actisone, i-methodine yesinaphi, i-cycloxesyl nitroSorea, i-cycloolexylk nitroSorea, i-cycloolexylk nitroSorea, i-cycloferyl nitroSorea, I-MeGeGeGeGROL, BILEVITAMIN, CHLORPHENIRAMIne, njll. I-DMF inomphumela we-catalytic ekuphendukeni kwe-hydrogenation, dehydrogenation, dehydration kanye nama-dehydrovuaculotion, ukuze izinga lokushisa lisampula liphulwe.
4. I-solvent engasho lutho ye-solvent. I-solvent ye-vinyl ne-acetylene. Ukuzimisela kwe-Photometric. Isixazululo seminyaka yegesi Chromatographic solution (izinga lokushisa elisebenzayo elingu-50 ℃, i-solvent yi-methanol), Ukuhlaziywa kwamakhemikhali okwehlukanisayo C2 ~ c5 hydrocarbons, futhi kungahlukanisa okujwayelekile, futhi kungahlukanisa i-CIS, i-Trans-2-Butene. Ukuhlaziywa kwezinsalela zokubulala izinambuzane. Ukuhlanganiswa okukhohlisayo. Ukuhlanganiswa kwe-peptide. Embonini yezithombe.
Ukucaciswa kwe-DMF
| Landela | Ukucacisa |
| Ukubonakala | -cwebile |
| Jwayelekile | ≥99.9% |
| IMetanol | ≤0.001% |
| Umbala (PT-CO), Hazen | ≤5 |
| Amanzi,% | ≤0.05% |
| I-Iron, MG / KG | ≤0.05 |
| I-Acidity (HCOOH) | ≤0.001% |
| I-BAISITIty (DMA) | ≤0.001% |
| Ph (25 ℃, 20% amanzi) | 6.5-8.0 |
| Ukuvuselelwa (25 ℃, 20% ama-aquous), μs / cm | ≤2 |
Ukupakishwa kwe-DMF
I-190KG / DRUM
Isitoreji kufanele sibe sepholile, somile futhi umoya.
