Utu Pai a te Kaihanga N,N-DIMETHYLFORMAMIDE (DMF) CAS 68-12-2
whakaahuatanga
I ahu mai te ingoa i te mea ko te whakakapinga dimethyl o te formamide (amide o te waikawa formic), ā, kei runga i te ngota N (hauota) ngā rōpū methyl e rua. Ko te N,N-DIMETHYLFORMAMID he whakarewa aprotic polar (hydrophilic) e koropupū ana, ā, ka taea e Chemicalbook te whakatairanga i te tikanga tauhohenga SN2. Ka hangaia te N,N-DIMETHYLFORMAMID mā te whakamahi i te waikawa formic me te dimethylamine. Kāore te N,N-DIMETHYLFORMAMID i te pumau (ina koa i te pāmahana teitei) i te aroaro o ngā turanga kaha pēnei i te konutai hauwai, ngā waikawa kaha rānei pēnei i te waikawa hauwaiora, te waikawa whanariki rānei, ā, ka waikura hei waikawa formic me te dimethylamine. He tino pumau i te hau, ā, ina werahia kia koropupū. Ina neke ake te pāmahana i te 350 ℃, ka ngaro te wai, ka puta he hauota waro me te dimethylamine. He whakarewa porotaka pai te N,N-DIMETHYLFORMAMID, ka taea te whakarewa i te nuinga o ngā matū waro me ngā matū kore-waro, ā, ka taea te whakaranu ki te wai, ki ngā waipiro, ki ngā etera, ki ngā aldehyde, ki ngā ketone, ki ngā ester, ki ngā hauwaiwaro halogenated me ngā hauwaiwaro kakara, me ētahi atu. Ko te pito pai o te ngota ngota N,N-DIMETHYLFORMAMID e karapotia ana e ngā rōpū methyl, e hanga ana i te aukati steric, kia kore ai e taea e ngā katote kino te whakatata atu, engari ko ngā katote pai anake ka honoa. He nui ake te kaha o te anion tahanga i te anion whakarewa. He maha ngā tauhohenga ionic he ngāwari ake te whakahaere i roto i te N,N-DIMETHYLFORMAMID i roto i ngā whakarewa protic whānui, hei tauira, ko te tauhohenga o ngā carboxylates me ngā hauwaiwaro halogenated i roto i te N,N-DIMETHYLFORMAMID i te pāmahana rūma, ka taea te whakaputa i ngā ester hua-teitei, he mea tino pai mō te hanga i ngā ester aukati steric.
Ngā Kupu Taurite o te Hanganga
amida,n,n-dimethyl-formicaci; Dimethylamidkyselinymravenci; dimethylamidkyselinymravenci; N,N-DIMETHYLFORMAMIDE,99.9+%,HPLCGRADE; NN-DIMETHYLFORChemicalbookMAMIDE99.8%ACS&;N,N-TIMETIROMAMIDE,4X25ML; N,N-TIMETIROMAMIDE,MAORI NGĀWARI; N,N-TIMETIROMAMIDETOHU*MO TE WHAKAPĀNGA
Ngā tono o te DMF
He pai te whakarewa DMF mō ngā momo pūmua teitei pēnei i te polyethylene, te polyvinyl chloride, te polyacrylonitrile, te polyamide, me ētahi atu, ā, ka taea te whakamahi mō te miro mākū o ngā muka hangai pēnei i ngā muka polyacrylonitrile, me te hanga polyurethane; Ka whakamahia mō te hanga kiriata kirihou; ka taea hoki te whakamahi hei tango peita; ka taea hoki te whakarewa i ētahi tae iti-wairewa, kia rite ai ngā tae ki ngā tae. Ka whakamahia te DMF mō te tango kakara me te wehenga me te whakaora i te butadiene mai i ngā wāhanga C4 me te isoprene mai i ngā wāhanga C5, ā, ka taea hoki te whakamahi hei matū whai hua mō te wehenga o ngā wāhanga kore-waikawa mai i te paraffin. He pai te whiriwhiri mō te wairewa o te waikawa isophthalic me te waikawa terephthalic: he nui ake te wairewa o te waikawa isophthalic i roto i te DMF i te waikawa terephthalic, te tango whakarewa, te tioata wāhanga rānei, ka taea te wehe i ngā mea e rua. I roto i te umanga matū hinu, ka taea te whakamahi i te DMF hei mimiti hau hei wehe me te whakapai ake i ngā hau. Hei rongoā mō te horoi i te Chemicalbook i roto i te umanga polyurethane, e whakamahia ana i te nuinga o te wā ki te hanga hiako hangai mākū; hei whakarewa i roto i te umanga muka kiriaku, e whakamahia ana i te nuinga o te wā ki te hanga miro maroke o te muka kiriaku; i roto i te umanga hiko hei tinei i ngā wāhanga whakakikoruatia ki te tine me ngā papa hiko. Ko ētahi atu umanga ko ngā kaikawe hau kino, ngā whakarewa mō te whakatiotanga rongoā, ngā piripiri, me ētahi atu. I roto i ngā tauhohenga rauropi, ehara i te mea he whakarewa noa te DMF mō te tauhohenga, engari he takawaenga nui hoki i roto i te hanga rauropi. I roto i te umanga patu pepeke, ka taea te whakamahi hei hanga ciprofloxacin; i roto i te umanga rongoā, ka taea te whakamahi hei hanga iodine, doxycycline, cortisone, huaora B6, iodine, quercetin, pyrantel, N-formylsarcomin, Oncoline, methoxyfen, benzodiazepine, cyclohexyl nitrosourea, furoflurouracil, waikawa hemostatic, bepartame, megestrol, bilevita, chlorpheniramine, sulfonamides Production. He pānga whakaterenga tō te DMF i roto i ngā tauhohenga o te hauwai, te tango hauwai, te maroke me te tango hāoraora, kia heke ai te pāmahana tauhohenga, kia pai ake ai te parakore o te hua.
1. He whakarewa rauropi pai rawa atu, e whakamahia ana hei whakarewa mō te polyurethane, te polyacrylonitrile, me te polyvinyl chloride, ā, e whakamahia ana hoki hei tangohanga, hei rauemi mata mō ngā rongoā me ngā patupatu.
2. Whakamahia hei matū tātari me te whakarewa mō te kapia winira me te acetylene
3. Ehara i te mea he rauemi mata matū anake, he whānuitia ngā whakamahinga, engari he whakarewa pai hoki, he whānuitia ngā whakamahinga. He whakarewa pai te DMF mō ngā momo polymer teitei pēnei i te polyethylene, te polyvinyl chloride, te polyacrylonitrile, te polyamide, me ētahi atu, ā, ka taea te whakamahi mō te miro mākū o ngā muka hangai pēnei i ngā muka polyacrylonitrile, me te hanga polyurethane; Ka whakamahia mō te hanga kiriata kirihou; ka taea hoki te whakamahi hei tango peita; ka taea hoki te whakarewa i ētahi tae wairewa iti, kia rite ai ngā tae ki ngā tae. Ka whakamahia te DMF mō te tango kakara me te wehenga me te whakaora i te butadiene mai i ngā wāhanga C4 me te isoprene mai i ngā wāhanga C5, ā, ka taea hoki te whakamahi hei matū whai hua mō te wehenga o ngā wāhanga kore-waikawa mai i te paraffin. He pai te whiriwhiringa mō te wairewatanga o te waikawa isophthalic me te waikawa terephthalic: he wairewa ake te waikawa isophthalic i roto i te DMF i te waikawa terephthalic, ka mahia te tango whakarewa i roto i te waikawa dimethyl formamide, i te mea kua whakatiotia wāhanga rānei, ka taea te wehe i ngā mea e rua. I roto i te umanga petrochemical, ka taea te whakamahi i te DMF hei ngongo hau hei wehe me te whakapai ake i ngā hau. I roto i ngā tauhohenga rauropi, ehara i te mea he whakarewa noa te DMF mō te tauhohenga, engari he takawaenga nui hoki i roto i te hanga rauropi. I roto i te umanga patu pepeke, ka taea te whakamahi hei whakaputa ciprofloxacin; I roto i te umanga rongoā, ka taea te whakamahi hei hanga i te iodine, te doxycycline, te cortisone, te huaora B6, te iodine, te quercetin, te pyrantel, te N-formylsarcomin, te Tumorine, te mustard Methoxyfen, te mustard Bian nitrogen, te cyclohexyl nitrosourea, te furoflurouracil, te waikawa hemostatic, te bepartame, te megestrol, te bilevitamin, te chlorpheniramine, me ētahi atu. He pānga catalytic te DMF i roto i ngā tauhohenga o te hydrogenation, te dehydrogenation, te dehydrohalogenation me te dehydrohalogenation, kia heke ai te pāmahana tauhohenga, kia pai ake ai te parakore o te hua.
4. He whakarewa titration kore-wai. He whakarewa mō te vinyl me te acetylene. He whakatau ine whakaahua. He otinga tūmau chromatography hau (te pāmahana whakahaere mōrahi 50 ℃, ko te whakarewa he methanol), he wehenga pukapuka matū tātaritanga C2 ~ C5 ngā warowaihā, ā, ka taea te wehe i te isobutene noa me te cis, trans-2-butene. He tātaritanga toenga patu pepeke. He hanganga rauropi. He hanganga peptide. Mō te umanga whakaahua.
Whakatakotoranga o te DMF
| Pūhui | Whakatakotoranga |
| Āhua | mārama |
| Whānui | ≥99.9% |
| Mētanora | ≤0.001% |
| Tae (PT-CO), Hazen | ≤5 |
| Wai,% | ≤0.05% |
| Rino, mg/kg | ≤0.05 |
| Te waikawa (HCOOH) | ≤0.001% |
| Te Tūmataiti (DMA) | ≤0.001% |
| PH (25℃, 20% wai) | 6.5-8.0 |
| Te kawe wai (25℃, 20% wai),μs/cm | ≤2 |
Te tākai o te DMF
190kg/pahu
Me waiho te rokiroki ki te wāhi hauhautanga, maroke, me te hauhautanga.
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