Tau Lelei a le Kamupani Gaosi N,N-DIMETHYLFORMAMIDE (DMF) CAS 68-12-2
fa'amatalaga
O le igoa e mafua mai i le mea moni e faapea o le dimethyl substitution o le formamide (amide o le formic acid), ma o vaega methyl uma e lua o loʻo i luga o le N (nitrogen) atom. O le N,N-DIMETHYLFORMAMID o se polar (hydrophilic) aprotic solvent e maualuga le pupuna, ma e mafai e le Chemicalbook ona faʻalauiloa le SN2 reaction mechanism. O le N,N-DIMETHYLFORMAMID e gaosia e faʻaaoga ai le formic acid ma le dimethylamine. O le N,N-DIMETHYLFORMAMID e le mautu (aemaise lava i le vevela maualuga) pe a iai ni base malolosi e pei o le sodium hydroxide poʻo ni acid malolosi e pei o le hydrochloric acid poʻo le sulfuric acid, ma e hydrolyzes i le formic acid ma le dimethylamine. E matua mautu lava i le ea ma pe a faʻavevela i le pupuna. A maualuga atu le vevela i le 350 ℃, o le a leiloa le vai ma maua ai le carbon monoxide ma le dimethylamine. O le N,N-DIMETHYLFORMAMID o se vailaʻau lelei e faʻaaogaina ai le aprotic polar solvent, e mafai ona faʻataʻapeʻapeina le tele o mea faʻaola ma mea e le faʻaola, ma e mafai ona faʻafefiloi ma le vai, alcohols, ethers, aldehydes, ketones, esters, halogenated hydrocarbons ma aromatic hydrocarbons, ma isi mea. O le pito i tua o le molecule N,N-DIMETHYLFORMAMID e siʻomia e vaega methyl, e fausia ai se faʻalavelave steric, ina ia le mafai ai e ions leaga ona oʻo atu, ae naʻo ions lelei e fesoʻotaʻi. O le anion e le lavalava e sili atu ona malosi nai lo le anion solvated. O le tele o tali ionic e faigofie ona faia i le N,N-DIMETHYLFORMAMID nai lo le lautele o protic solvents, mo se faʻataʻitaʻiga, o le tali atu o carboxylates ma halogenated hydrocarbons i le N,N-DIMETHYLFORMAMID i le vevela o le potu, e mafai ona faʻatupuina ai esters maualuga le fua, aemaise lava mo le faʻapipiʻiina o esters e taofia le steric.
Fa'asologa.Uiga tutusa
amide,n,n-dimethyl-formicaci; Dimethylamidkyselinymravenci; dimethylamidkyselinymravenci; N,N-DIMETHYLFORMAMIDE,99.9+%,HPLCGRADE; NN-DIMETHYLFORChemicalbookMAMIDE99.8%ACS&;N,N-DIMETHYLFORMAMIDE,4X25ML; N,N-DIMETHYLFORMAMIDE,MOLECULARBILOGYREAGEN; N,N-DIMETHYLFORMAMIDENEUTRALMARKER*MO LE CAPILLARY
Fa'aaogāina o le DMF
O le DMF o se vailaʻau lelei mo le tele o polymers maualuga e pei o le polyethylene, polyvinyl chloride, polyacrylonitrile, polyamide, ma isi mea, ma e mafai ona faʻaaogaina mo le milo susu o alava faʻapitoa e pei o alava polyacrylonitrile, ma le faʻapipiʻiina o le polyurethane; E faʻaaogaina mo le faia o ata palasitika; e mafai foi ona faʻaaogaina o se mea e aveese ai vali mo le aveeseina o vali; e mafai foi ona faʻataʻapeʻapeina nisi o pigments e maualalo le solubility, ina ia maua ai e pigments uiga o vali. E faʻaaogaina le DMF mo le faʻamamāina o mea manogi ma le vavaeʻeseina ma le toe faʻaleleia o le butadiene mai vaega C4 ma le isoprene mai vaega C5, ma e mafai foi ona faʻaaogaina o se reagent aoga mo le vavaeʻeseina o vaega e le o le hydrocarbon mai le paraffin. E iai le filifiliga lelei mo le solubility o le isophthalic acid ma le terephthalic acid: o le isophthalic acid e sili atu ona soluble i le DMF nai lo le terephthalic acid, solvent extraction poʻo le partial Crystallization, e mafai ona vavaeʻeseina ia mea e lua. I le alamanuia petrochemical, e mafai ona faʻaaogaina le DMF o se mea e mitiia ai le kesi e vavaeʻese ma faʻaleleia ai kesi. I le avea ai ma se vailaʻau faʻamamā mo le fufuluina o le Chemicalbook i le alamanuia polyurethane, e masani ona faʻaaogaina i le gaosiga o le paʻu faʻapitoa susu; i le avea ai ma se vailaʻau faʻamago i le alamanuia alava acrylic, e masani ona faʻaaogaina i le gaosiga mago o le alava acrylic; i le alamanuia eletise o se mea e faʻamalieina ai vaega uʻamea ma laupapa matagaluega. O isi alamanuia e aofia ai avefeʻau o kasa mataʻutia, vailaʻau faʻamago mo le faʻamaʻiina o vailaʻau, mea faʻapipiʻi, ma isi. I tali faʻalenatura, e le gata ina faʻaaogaina lautele le DMF o se vailaʻau faʻamago mo le tali atu, ae o se vaega taua foi i le faʻaputuga faʻalenatura. I le alamanuia o vailaʻau faʻasaina, e mafai ona faʻaaogaina e gaosia ai le ciprofloxacin; i le alamanuia vailaʻau, e mafai ona faʻaaogaina e faʻaputu ai le iodine, doxycycline, cortisone, vitamin B6, iodine, quercetin, pyrantel, N-formylsarcomin, Oncoline, methoxyfen, benzodiazepine, cyclohexyl nitrosourea, furoflurouracil, hemostatic acid, bepartame, megestrol, bilevita, chlorpheniramine, sulfonamides Production. E iai le aafiaga fa'aosofiaga o le DMF i tali atu o le hydrogenation, dehydrogenation, dehydration ma le dehydrohalogenation, ina ia fa'aitiitia ai le vevela o le tali atu ma fa'aleleia atili ai le mama o le oloa.
1. O se vaifofo fa'alenatura sili ona lelei, e fa'aaogaina o se vaifofo mo le polyurethane, polyacrylonitrile, ma le polyvinyl chloride, ma e fa'aaogaina fo'i o se mea e aveese ai vaila'au, o se mea mata mo vaila'au ma vaila'au e fa'asaina ai iniseti.
2. Fa'aaogaina o se vaila'au fa'ata'ita'i ma se vaila'au fa'a'ese'ese mo le vinyl resin ma le acetylene
3. E le gata o se mea mata vailaʻau e tele ona faʻaoga, ae o se vailaʻau faʻamama lelei foʻi e tele ona faʻaoga. O le DMF o se vailaʻau faʻamama lelei mo le tele o polymers maualuga e pei o le polyethylene, polyvinyl chloride, polyacrylonitrile, polyamide, ma isi, ma e mafai ona faʻaaogaina mo le milo susu o alava faʻapitoa e pei o alava polyacrylonitrile, ma le faʻapipiʻiina o le polyurethane; E faʻaaogaina mo le faia o ata palasitika; e mafai foʻi ona faʻaaogaina o se mea e aveese ai vali; e mafai foʻi ona faʻataʻapeʻapeina nisi o pigments e le mafai ona faʻamama, ina ia iai uiga o pigments o vali. E faʻaaogaina le DMF mo le faʻamamagoina o mea manogi ma le vavaeʻeseina ma le toe faʻaleleia o le butadiene mai vaega C4 ma le isoprene mai vaega C5, ma e mafai foʻi ona faʻaaogaina o se vailaʻau aoga mo le vavaeʻeseina o vaega e le o ni hydrocarbon mai le paraffin. E lelei lona filifiliga mo le solubility o le isophthalic acid ma le terephthalic acid: e sili atu le soluble o le isophthalic acid i le DMF nai lo le terephthalic acid, e faia le solvent extraction i le dimethyl chemicalbook acid formamide pe fa'a-crystallized vaega, e mafai ona vaeluaina ia mea e lua. I le alamanuia petrochemical, e mafai ona fa'aogaina le DMF o se mea e mitiia ai le kesi e vavae'ese ai ma fa'aleleia ai kesi. I tali fa'alenatura, e le gata ina fa'aaogaina lautele le DMF o se solvent mo le tali, ae o se vaega taua foi i le synthesis fa'alenatura. I le alamanuia pesticide, e mafai ona fa'aogaina e gaosia ai le ciprofloxacin; I le alamanuia o vailaʻau, e mafai ona faʻaaogaina e faʻapipiʻi ai le iodine, doxycycline, cortisone, vitamini B6, iodine, quercetin, pyrantel, N-formylsarcomin, Tumorine, Methoxyfen mustard, Bian nitrogen mustard, cyclohexyl nitrosourea, furoflurouracil, hemostatic acid, bepartame, megestrol, bilevitamin, chlorpheniramine, ma isi. O le DMF e iai sona aafiaga faʻasolosolo i tali o le hydrogenation, dehydrogenation, dehydration ma le dehydrohalogenation, ina ia faʻaitiitia ai le vevela o le tali ma faʻaleleia atili ai le mama o oloa.
4. Vai fa'asu'i e le o se vai. Vai fa'asu'i mo le vinyl ma le acetylene. Fuafuaina o le Photometric. Vai fa'asu'i tumau e ala i le chromatographic gas (vevela maualuga o le fa'agaioiga 50 ℃, o le vai fa'asu'i o le methanol), vavae'esega Su'esu'ega o le Chemicalbook C2 ~ C5 hydrocarbons, ma e mafai ona vavae'ese le masani, isobutene ma cis, trans-2-butene. Su'esu'ega o toega o vaila'au fa'asaina. Fa'aputuga Organic. Fa'aputuga Peptide. Mo le alamanuia o ata.
Fa'amatalaga o le DMF
| Fa'aputuga | Fa'amatalaga |
| Foliga vaaia | manino |
| Aoao | ≥99.9% |
| Methanol | ≤0.001% |
| Lanu (PT-CO), Hazen | ≤5 |
| Vai,% | ≤0.05% |
| U'amea, mg/kg | ≤0.05 |
| 'O'ona (HCOOH) | ≤0.001% |
| Fa'avae (DMA) | ≤0.001% |
| PH (25 ℃, 20% vai) | 6.5-8.0 |
| Amioga (25 ℃, 20% vai),μs/cm | ≤2 |
Afifiina o le DMF
190kg/palu
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