Umkhiqizi Intengo Enhle N,N-DIMETHYLFORMAMIDE(DMF) CAS 68-12-2

Intengo Enhle Yomkhiqizi N,N-DIMETHYLFORMAMIDE(DMF) CAS 68-12-2 Isithombe Esivelele

incazelo emfushane:

I-N,N-DIMETHYLFORMAMIDE ifushaniswe ngokuthi i-DMF. Iyinhlanganisela ekhiqizwa ngokufakwa esikhundleni kweqembu le-hydroxyl le-formic acid yiqembu le-dimethylamino, kanti ifomula yama-molecule yi-HCON(CH3)2. Iwuketshezi olungenambala, olusobala, olubila kakhulu olunephunga elincane le-amine kanye nobuningi obuhlobene obungu-0.9445 (25°C). Iphuzu lokuncibilika -61 ℃. Iphuzu lokubila 152.8 ℃. Iphuzu lokuflasha 57.78 ℃. Ubuningi bomhwamuko 2.51. Umfutho womhwamuko 0.49kpa (3.7mmHg25 ℃). Iphuzu lokushisa okuzenzakalelayo lingu-445°C. Umkhawulo wokuqhuma kwengxube yomhwamuko nomoya uphakathi kuka-2.2 kuya ku-15.2%. Uma kwenzeka ilangabi elivulekile kanye nokushisa okuphezulu, kungabangela ukusha nokuqhuma. Kungasabela ngamandla nge-sulfuric acid egxilile kanye ne-nitric acid evuthayo futhi kuqhume ngisho nokuqhuma. Kuxutshwa namanzi kanye nezinyibilikisi eziningi eziphilayo. Kuyisithako esivamile sokusabela kwamakhemikhali. I-N,N-DIMETHYLFORMAMIDE emsulwa ayinaphunga, kodwa i-N,N-DIMETHYLFORMAMIDE yezinga lezimboni noma eyonakele inephunga elifana nelenhlanzi ngoba iqukethe ukungcola kwe-dimethylamine.

I-CAS: 68-12-2

Sithumelele i-imeyili

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

incazelo

Leli gama livela eqinisweni lokuthi liwukufakwa esikhundleni kwe-formamide (i-amide ye-formic acid), futhi womabili amaqembu e-methyl atholakala ku-athomu ye-N (nitrogen). I-N,N-DIMETHYLFORMAMID iyi-solvent e-polar (hydrophilic) aprotic ebila kakhulu, futhi i-Chemicalbook ingakhuthaza indlela yokusabela ye-SN2. I-N,N-DIMETHYLFORMAMID ikhiqizwa kusetshenziswa i-formic acid kanye ne-dimethylamine. I-N,N-DIMETHYLFORMAMID ayizinzile (ikakhulukazi ekushiseni okuphezulu) lapho kukhona izisekelo eziqinile njenge-sodium hydroxide noma ama-acid aqinile njenge-hydrochloric acid noma i-sulfuric acid, futhi i-hydrolyzes ibe yi-formic acid kanye ne-dimethylamine. Izinzile kakhulu emoyeni futhi uma ishiswa ize ibile. Uma izinga lokushisa liphakeme kune-350 ℃, izolahlekelwa amanzi futhi ikhiqize i-carbon monoxide kanye ne-dimethylamine. I-N,N-DIMETHYLFORMAMID iyi-solvent enhle ye-aprotic polar, engancibilikisa izinto eziningi eziphilayo nezingaphili, futhi ixutshwa namanzi, ama-alcohols, ama-ether, ama-aldehydes, ama-ketone, ama-ester, ama-hydrocarbon afakwe i-halogenated kanye nama-hydrocarbon aromatic, njll. . Ukuphela kwe-molecule ye-N,N-DIMETHYLFORMAMID okushajelwe kahle kuzungezwe amaqembu e-methyl, okwenza isithiyo se-steric, ukuze ama-ion angalungile angasondeli, kodwa ama-ion amahle kuphela ahlotshaniswa. I-anion engenalutho isebenza kakhulu kune-anion encibilikisiwe. Ukusabela okuningi kwe-ionic kwenziwa kalula ku-N,N-DIMETHYLFORMAMID kunakuma-solvent ajwayelekile e-protic, isibonelo, ukusabela kwama-carboxylates nama-hydrocarbon afakwe i-halogenated ku-N,N-DIMETHYLFORMAMID ekushiseni kwegumbi, kungakhiqiza ama-ester anezinzuzo eziphezulu, afaneleka kakhulu ekuhlanganisweni kwama-ester avinjelwe yi-sterically.

Ukwenziwa. Amagama afanayo

i-amide,n,n-dimethyl-formicaci; i-Dimethylamidkyselinymravenci; i-dimethylamidkyselinymravenci; i-N,N-DIMETHYLFORMAMIDE,99.9+%,HPLCGRADE; i-NN-DIMETHYLFORChemicalbookMAMIDE99.8%ACS&;N,N-DIMETHYLFORMAMIDE,4X25ML; N,N-DIMETHYLFORMAMIDE,MOLECULARBIOLOGYREANT; N,N-DIMETHYLFORMAMIDEENEUTRALMARKER*FORCIPILLARY

Izicelo ze-DMF

I-DMF iyi-solvent enhle yezinhlobo ezahlukene zama-polymer aphezulu njenge-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., futhi ingasetshenziswa ekuphotheni okumanzi kwemicu yokwenziwa njengemicu ye-polyacrylonitrile, kanye nokuhlanganiswa kwe-polyurethane; Isetshenziselwa ukwenza ifilimu yepulasitiki; ingasetshenziswa futhi njengomhluzi wopende wokususa upende; ingaphinde incibilikise ama-pigment athile ancibilikayo kancane, ukuze ama-pigment abe nezici zodayi. I-DMF isetshenziselwa ukukhipha okunephunga elimnandi kanye nokuhlukanisa kanye nokubuyisa i-butadiene kusuka kuma-fraction e-C4 kanye ne-isoprene kusuka kuma-fraction e-C5, futhi ingasetshenziswa njenge-reagent ephumelelayo yokuhlukanisa izingxenye ezingezona i-hydrocarbon kusuka ku-paraffin. Inokukhetha okuhle kokuncibilika kwe-isophthalic acid kanye ne-terephthalic acid: i-isophthalic acid incibilika kakhulu ku-DMF kune-terephthalic acid, ukukhipha i-solvent noma i-Crystallization engaphelele, lokhu kokubili kungahlukaniswa. Embonini ye-petrochemical, i-DMF ingasetshenziswa njengesimunca igesi ukuze ihlukanise futhi icwenge amagesi. Njenge-ejenti yokwelapha yokugeza i-Chemicalbook embonini ye-polyurethane, isetshenziswa kakhulu ekukhiqizeni isikhumba esimanzi esenziwe; njenge-solvent embonini ye-acrylic fiber, isetshenziswa kakhulu ekukhiqizeni i-dry spinning fiber ye-acrylic; embonini ye-elekthronikhi njengokucima izingxenye ezifakwe i-tin kanye namabhodi wesekethe Ezinye izimboni zifaka abathwali bamagesi ayingozi, izinyibilikisi zokwakheka kwe-drug crystallization, izinamathiseli, njll. Ekwenzeni kwezinto eziphilayo, i-DMF ayisetshenziswa kabanzi nje kuphela njengesinyibilikisi sokusabela, kodwa futhi iyindawo ebalulekile ekwakhiweni kwezinto eziphilayo. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; embonini yezemithi, ingasetshenziswa ukuhlanganisa 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-furoflurouracil, i-hemostatic acid, i-bepartame, i-megestrol, i-bilevita, i-chlorpheniramine, i-sulfonamides. I-DMF inomphumela wokubangela ukusabela kwe-hydrogenation, dehydrogenation, dehydration kanye ne-dehydrohalogenation, ukuze izinga lokushisa lokusabela lehle futhi ubumsulwa bomkhiqizo buthuthukiswe.

1. Kuyisithako esingokwemvelo esihle kakhulu, esisetshenziswa njengesithako esincibilikisa i-polyurethane, i-polyacrylonitrile, kanye ne-polyvinyl chloride, futhi sisetshenziswa njengesithako esikhiphayo, njengezinto zokusetshenziswa kwemithi kanye nezibulala-zinambuzane.

2. Isetshenziswa njenge-reagent yokuhlaziya kanye ne-solvent ye-vinyl resin kanye ne-acetylene

3. Akuyona nje kuphela into eluhlaza yamakhemikhali enokusetshenziswa okubanzi, kodwa futhi iyisithako esihle kakhulu esinokusetshenziswa okubanzi. I-DMF iyisithako esihle sama-polymer ahlukahlukene aphezulu njenge-polyethylene, i-polyvinyl chloride, i-polyacrylonitrile, i-polyamide, njll., futhi ingasetshenziswa ekuphotheni okumanzi kwemicu yokwenziwa njengemicu ye-polyacrylonitrile, kanye nokuhlanganiswa kwe-polyurethane; Isetshenziselwa ukwenza ifilimu yepulasitiki; ingasetshenziswa futhi njengesihlungi sopende sokususa upende; ingaphinde incibilikise amanye ama-pigment ancibilikayo kancane, ukuze ama-pigment abe nezici zodayi. I-DMF isetshenziselwa ukukhipha i-aromatic kanye nokuhlukanisa kanye nokubuyisa i-butadiene kusuka kuma-fraction e-C4 kanye ne-isoprene kusuka kuma-fraction e-C5, futhi ingasetshenziswa njenge-reagent ephumelelayo yokuhlukanisa izingxenye ezingezona i-hydrocarbon kusuka ku-paraffin. Inokukhetha okuhle kokuncibilika kwe-isophthalic acid kanye ne-terephthalic acid: i-isophthalic acid incibilika kakhulu ku-DMF kune-terephthalic acid, ukukhishwa kwe-solvent kwenziwa ku-dimethyl chemicalbook acid formamide Noma kuqiniswe kancane, lokhu kokubili kungahlukaniswa. Embonini ye-petrochemical, i-DMF ingasetshenziswa njengesimunca igesi ukuze ihlukanise futhi icwenge amagesi. Ekusabeleni kwezinto eziphilayo, i-DMF ayisetshenziswa kabanzi nje kuphela njengesimunca igesi ukuze isabelane, kodwa futhi iyindawo ebalulekile ekwakhiweni kwezinto eziphilayo. Embonini yezibulala-zinambuzane, ingasetshenziswa ukukhiqiza i-ciprofloxacin; embonini yezemithi, ingasetshenziswa ukuhlanganisa 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-furoflurouracil, i-hemostatic acid, i-bepartame, i-megestrol, i-bilevitamin, i-chlorpheniramine, njll. I-DMF inomphumela we-catalytic ekusabeleni kwe-hydrogenation, i-dehydrogenation, i-dehydration kanye ne-dehydrohalogenation, ukuze izinga lokushisa lokusabela lehle futhi ubumsulwa bomkhiqizo buthuthuke.

4. Isinyibilikisi se-titration esingemanzi. Isinyibilikisi se-vinyl ne-acetylene. Ukunqunywa kwe-photometric. Isixazululo esimile se-gas chromatographic (izinga lokushisa eliphezulu lokusebenza lingu-50 ℃, isinyibilikisi siyi-methanol), ukuhlukaniswa Ukuhlaziywa kwe-Chemicalbook C2 ~ C5 hydrocarbons, futhi kungahlukanisa okujwayelekile, i-isobutene ne-cis, i-trans-2-butene. Ukuhlaziywa kwezinsalela ze-pesticide. Ukuhlanganiswa kwe-Organic. Ukuhlanganiswa kwe-peptide. Kwemboni yezithombe.

Incazelo ye-DMF

Inhlanganisela	Imininingwane
Ukubukeka	cacile
Jikelele	≥99.9%
I-Methanol	≤0.001%
Umbala (PT-CO), Hazen	≤5
Amanzi,%	≤0.05%
Insimbi, mg/kg	≤0.05
I-asidi (HCOOH)	≤0.001%
Isisekelo (i-DMA)	≤0.001%
I-PH(25℃, 20% amanzi)	6.5-8.0
Ukuqhuba (25℃, 20% amanzi),μs/cm	≤2