China N,N-Dimethylformamide CAS 68-12-2 fektheri le bahlahisi

N, N-Dimethylformamide CAS 68-12-2

tlhaloso e khuts'oane:

Dimethylformamide ke mokelikeli o se nang mebala le o bonaletsang. Hase feela lisebelisoa tse sebelisoang haholo tsa lik'hemik'hale, empa hape ke solvent e babatsehang e nang le mefuta e mengata ea tšebeliso. Dimethylformamide ke thepa ea bohlokoa e tala bakeng sa meriana, petrochemical, letlalo le liindasteri tse ling.
Dimethylformamide e bitsoa DMF. Ke motsoako oo sehlopha sa hydroxyl sa formic acid se nkeloang sebaka ke sehlopha sa dimethylamino, se nang le foromo ea molek'hule HCON(CH3)2. Ke mokelikeli o se nang 'mala le o pepeneneng oa ntlha e belang e nang le monko o bobebe oa amine le boima bo lekanang ba 0.9445 (25℃). Sebaka sa ho qhibiliha -61 ℃. Sebaka se belang 152.8 ℃. Sebaka sa Flash 57.78 ℃. Boima ba mouoane 2.51. Khatello ea mouoane 0.49kpa (3.7mmHg25 ℃). Sebaka sa Autoignition ke 445 ℃. Moeli oa ho phatloha ha motsoako oa mouoane le moea ke 2.2 ~ 15.2%. Ho pepesehela malakabe a bulehileng le mocheso o phahameng ho ka baka ho tuka le ho phatloha. E ka itšoara ka mabifi ha e kopana le asiti ea sulfuric e teteaneng le asiti e tukang ea nitric mme ea ba ea phatloha. E fapane le metsi le lihlapolli tse ngata tsa tlhaho Chemicalbook. Ke solvent e tloaelehileng bakeng sa liphetoho tsa lik'hemik'hale. Dimethylformamide e hloekileng ha e na monko, empa boemo ba indasteri kapa dimethylformamide e senyehileng e na le monko oa litlhapi hobane e na le litšila tsa dimethylamine. Lebitso lena le tsoa tabeng ea hore ke sebaka sa dimethyl sa formamide (amide ea formic acid), 'me lihlopha tse peli tsa methyl li fumaneha ho athomo ea N (nitrogen). Dimethylformamide ke polar (hydrophilic) aprotic solvent e nang le ntlha e phahameng ea ho belisa, e ka khothalletsang mokhoa oa ho itšoara ka SN2. Dimethylformamide e entsoe ka acid e formic le dimethylamine. Dimethylformamide ha e tsitsa (haholo-holo mocheso o phahameng) ka pel'a metheo e matla e kang sodium hydroxide kapa li-acid tse matla tse kang hydrochloric acid kapa sulfuric acid, le hydrolyzes ho formic acid le dimethylamine.
E tsitsitse haholo moeeng 'me ha e futhumala ho fihlela e bela. Ha mocheso o feta 350 ° C, o lahleheloa ke metsi mme o hlahisa carbon monoxide le dimethylamine. N,N-dimethylformamide ke aprotic polar solvent e ntle haholo e khonang ho qhaqha lintho tse ngata tse phelang le tse sa tsitsang 'me e kopane le metsi, alcohols, ethers, aldehydes, ketones, esters, halogenated hydrocarbons le li-hydrocarbon tse nkhang hamonate. . Qetello e ntle ea molek'hule ea N, N-dimethylformamide e pota-potiloe ke lihlopha tsa methyl, ho etsa thibelo ea sebaka sa Chemicalbook e thibelang li-ion tse mpe ho atamela le ho kopanya li-ion tse ntle feela. Li-anion tse se nang letho li sebetsa haholo ho feta li-anion tse rarollotsoeng. Liphetoho tse ngata tsa ionic li bonolo ho etsoa ho N,N-dimethylformamide ho feta ka kakaretso ea lihlapolli tsa protic. Mohlala, li-carboxylate le li-halogenated hydrocarbons li arabela ho N, N-dimethylformamide ka mocheso oa kamore. , e ka hlahisa li-ester tse nang le lihlahisoa tse ngata, 'me e loketse ka ho khetheha bakeng sa motsoako oa li-ester tse thibetsoeng ka sterically.

Lebitso:N, N-Dimethylformamide CAS 68-12-2

Lebitso la Brand:MIT-IVY

Tlhaloso:mokelikeli o bonaletsang o se nang mmala

Tšireletso ea Tikoloho::Ee

Setifikeiti::ISO

Mofuta:E sebelisoa e le li-reagents tsa analytical le solvents bakeng sa resin ea vinyl le acetylene

Sephutheloana sa Lipalangoang:LIEKETSENG

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Lintlha tsa Sehlahisoa

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Kenyelletso ea sehlahisoa

Dimethylformamide e bitsoa DMF. Ke motsoako oo sehlopha sa hydroxyl sa formic acid se nkeloang sebaka ke sehlopha sa dimethylamino, se nang le foromo ea molek'hule HCON(CH3)2. Ke mokelikeli o se nang 'mala le o pepeneneng oa ntlha e belang e nang le monko o bobebe oa amine le boima bo lekanang ba 0.9445 (25℃). Sebaka sa ho qhibiliha -61 ℃. Sebaka se belang 152.8 ℃. Sebaka sa Flash 57.78 ℃. Boima ba mouoane 2.51. Khatello ea mouoane 0.49kpa (3.7mmHg25 ℃). Sebaka sa Autoignition ke 445 ℃. Moeli oa ho phatloha ha motsoako oa mouoane le moea ke 2.2 ~ 15.2%. Ho pepesehela malakabe a bulehileng le mocheso o phahameng ho ka baka ho tuka le ho phatloha. E ka itšoara ka mabifi ha e kopana le asiti ea sulfuric e teteaneng le asiti e tukang ea nitric mme ea ba ea phatloha. E fapane le metsi le lihlapolli tse ngata tsa tlhaho Chemicalbook. Ke solvent e tloaelehileng bakeng sa liphetoho tsa lik'hemik'hale. Dimethylformamide e hloekileng ha e na monko, empa boemo ba indasteri kapa dimethylformamide e senyehileng e na le monko oa litlhapi hobane e na le litšila tsa dimethylamine. Lebitso lena le tsoa tabeng ea hore ke sebaka sa dimethyl sa formamide (amide ea formic acid), 'me lihlopha tse peli tsa methyl li fumaneha ho athomo ea N (nitrogen). Dimethylformamide ke polar (hydrophilic) aprotic solvent e nang le ntlha e phahameng ea ho belisa, e ka khothalletsang mokhoa oa ho itšoara ka SN2. Dimethylformamide e entsoe ka acid e formic le dimethylamine. Dimethylformamide ha e tsitsa (haholo-holo mocheso o phahameng) ka pel'a metheo e matla e kang sodium hydroxide kapa li-acid tse matla tse kang hydrochloric acid kapa sulfuric acid, le hydrolyzes ho formic acid le dimethylamine.
E tsitsitse haholo moeeng 'me ha e futhumala ho fihlela e bela. Ha mocheso o feta 350 ° C, o lahleheloa ke metsi mme o hlahisa carbon monoxide le dimethylamine. N,N-dimethylformamide ke aprotic polar solvent e ntle haholo e khonang ho qhaqha lintho tse ngata tse phelang le tse sa tsitsang 'me e kopane le metsi, alcohols, ethers, aldehydes, ketones, esters, halogenated hydrocarbons le li-hydrocarbon tse nkhang hamonate. . Qetello e ntle ea molek'hule ea N, N-dimethylformamide e pota-potiloe ke lihlopha tsa methyl, ho etsa thibelo ea sebaka sa Chemicalbook e thibelang li-ion tse mpe ho atamela le ho kopanya li-ion tse ntle feela. Li-anion tse se nang letho li sebetsa haholo ho feta li-anion tse rarollotsoeng. Liphetoho tse ngata tsa ionic li bonolo ho etsoa ho N,N-dimethylformamide ho feta ka kakaretso ea lihlapolli tsa protic. Mohlala, li-carboxylate le li-halogenated hydrocarbons li arabela ho N, N-dimethylformamide ka mocheso oa kamore. , e ka hlahisa li-ester tse nang le lihlahisoa tse ngata, 'me e loketse ka ho khetheha bakeng sa motsoako oa li-ester tse thibetsoeng ka sterically.

Sebaka sa kopo

Tlhaloso ea kaho

N, N-Dimethylformamide

CAS 68-12-2

CBNomoro: CB2854115

Foromo ea molek'hule: C3H7NO

Boima ba molek'hule 73.09

Sebaka se qhibilihang: -61°C (lit.)

Potoloho e khethehileng: 0.94º

Sebaka se belang: 153°C (hote.)

Boima: 0.944g/mL (lit.) V

apor Chemicalbook Vapor density: 2.5 (vsair)

Khatello ea mouoane: 2.7mmHg (20°C) Refractive index: n20/D1.430(lit.)

Sebaka sa Flash: 136°

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