Kina N, N-Dimethylformamide CAS 68-12-2 hale hana a me nā mea hana

N,N-Dimethylformamide CAS 68-12-2

wehewehe pōkole:

ʻO Dimethylformamide kahi wai kala ʻole a maopopo. ʻAʻole ia he mea hoʻohana nui kemika, akā he mea hoʻoheheʻe maikaʻi loa me ka nui o nā hoʻohana. ʻO Dimethylformamide kahi mea waiwai nui no ka lāʻau lapaʻau, petrochemical, ʻili a me nā ʻoihana ʻē aʻe.
Ua kapa ʻia ʻo Dimethylformamide ʻo DMF. He hui ia kahi i pani ʻia ai ka pūʻulu hydroxyl o ka waika formic e kahi pūʻulu dimethylamino, me ka pūʻulu mole HCON(CH3)2. He wai kala ʻole a ʻaʻole ia me ka ʻala amine māmā a me ka mānoanoa pili o 0.9445 (25 ℃). Ka helu hehee -61 ℃. He 152.8 ℃ ka helu paila. He 57.78 ℃ ke kiko uila. Māmā māhu 2.51. Pumi mahu 0.49kpa (3.7mmHg25 ℃). ʻO 445 ℃ ka helu autognition. ʻO ka palena pahū o ka mahu a me ka hui ʻana o ka ea he 2.2 ~ 15.2%. ʻO ka ʻike ʻana i nā lapalapa a me ka wela kiʻekiʻe ke kumu o ka puhi ʻana a me ka pahū. Hiki iā ia ke hana ikaika me ka sulfuric acid concentrated a me ka waika nitric fuming a pahū. Hiki ke hoʻopili ʻia me ka wai a me ka hapa nui o nā mea hoʻoheheʻe kūlohelohe Chemicalbook. He mea hoʻoheheʻe maʻamau no nā hoʻololi kemika. ʻAʻohe ʻala o ka dimethylformamide maʻemaʻe, akā he ʻala iʻa ka pae ʻoihana a i ʻole ka dimethylformamide deteriorated no ka mea aia nā mea haumia dimethylamine. ʻO ka inoa mai ka ʻoiaʻiʻo he dimethyl substitute o formamide (amide of formic acid), a aia nā pūʻulu methyl ʻelua ma ka atom N (nitrogen). ʻO Dimethylformamide kahi mea hoʻoheheʻe polar (hydrophilic) aprotic me kahi kiʻekiʻe e hoʻolapalapa ai, hiki ke hoʻoikaika i ka mīkini pane SN2. Hana ʻia ka dimethylformamide mai ka formic acid a me ka dimethylamine. ʻAʻole paʻa ka Dimethylformamide (ʻoi loa i nā mahana kiʻekiʻe) i mua o nā kumu ikaika e like me ka sodium hydroxide a i ʻole nā ʻakika ikaika e like me ka waika hydrochloric a i ʻole sulfuric acid, a hydrolyzes i formic acid a me dimethylamine.
Paʻa loa ia i ka lewa a i ka wā i wela ai a hoʻolapalapa. Ke kiʻekiʻe ka mahana ma mua o 350 ° C, nalowale ka wai a hoʻopuka i ka carbon monoxide a me ka dimethylamine. ʻO N, N-dimethylformamide kahi mea hoʻoheheʻe polar aprotic maikaʻi loa e hiki ke hoʻoheheʻe i ka hapa nui o nā mea organik a me nā mea ʻole a hiki ke hui pū me ka wai, nā ʻawaʻawa, nā ethers, aldehydes, ketones, esters, halogenated hydrocarbons a aromatic hydrocarbons. . Hoʻopuni ʻia ka hopena maikaʻi o ka mole N,N-dimethylformamide e nā pūʻulu methyl, e hana ana i kahi pale Chemicalbook spatial e pale ai i nā ion maikaʻi ʻole mai ka hoʻokokoke ʻana a hoʻopili wale i nā ion maikaʻi. ʻOi aku ka ʻoi aku o ka ʻeleʻele ma mua o nā anion i hoʻopaʻa ʻia. ʻOi aku ka maʻalahi o ka hana ʻana ma N,N-dimethylformamide ma mua o nā solvents protic maʻamau. No ka laʻana, hana ka carboxylates a me ka halogenated hydrocarbons i N,N-dimethylformamide ma ka lumi wela. , hiki ke hoʻohua i nā esters me nā hua kiʻekiʻe, a kūpono loa ia no ka hoʻohui ʻana i nā esters sterically hindered.

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

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Hoʻolauna huahana

Ua kapa ʻia ʻo Dimethylformamide ʻo DMF. He hui ia kahi i pani ʻia ai ka pūʻulu hydroxyl o ka waika formic e kahi pūʻulu dimethylamino, me ka pūʻulu mole HCON(CH3)2. He wai kala ʻole a ʻaʻole ia me ka ʻala amine māmā a me ka mānoanoa pili o 0.9445 (25 ℃). Ka helu hehee -61 ℃. He 152.8 ℃ ka helu paila. He 57.78 ℃ ke kiko uila. Māmā māhu 2.51. Pumi mahu 0.49kpa (3.7mmHg25 ℃). ʻO 445 ℃ ka helu autognition. ʻO ka palena pahū o ka mahu a me ka hui ʻana o ka ea he 2.2 ~ 15.2%. ʻO ka ʻike ʻana i nā lapalapa a me ka wela kiʻekiʻe ke kumu o ka puhi ʻana a me ka pahū. Hiki iā ia ke hana ikaika me ka sulfuric acid concentrated a me ka waika nitric fuming a pahū. Hiki ke hoʻopili ʻia me ka wai a me ka hapa nui o nā mea hoʻoheheʻe kūlohelohe Chemicalbook. He mea hoʻoheheʻe maʻamau no nā hoʻololi kemika. ʻAʻohe ʻala o ka dimethylformamide maʻemaʻe, akā he ʻala iʻa ka pae ʻoihana a i ʻole ka dimethylformamide deteriorated no ka mea aia nā mea haumia dimethylamine. ʻO ka inoa mai ka ʻoiaʻiʻo he dimethyl substitute o formamide (amide of formic acid), a aia nā pūʻulu methyl ʻelua ma ka atom N (nitrogen). ʻO Dimethylformamide kahi mea hoʻoheheʻe polar (hydrophilic) aprotic me kahi kiʻekiʻe e hoʻolapalapa ai, hiki ke hoʻoikaika i ka mīkini pane SN2. Hana ʻia ka dimethylformamide mai ka formic acid a me ka dimethylamine. ʻAʻole paʻa ka Dimethylformamide (ʻoi loa i nā mahana kiʻekiʻe) i mua o nā kumu ikaika e like me ka sodium hydroxide a i ʻole nā ʻakika ikaika e like me ka waika hydrochloric a i ʻole sulfuric acid, a hydrolyzes i formic acid a me dimethylamine.
Paʻa loa ia i ka lewa a i ka wā i wela ai a hoʻolapalapa. Ke kiʻekiʻe ka mahana ma mua o 350 ° C, nalowale ka wai a hoʻopuka i ka carbon monoxide a me ka dimethylamine. ʻO N, N-dimethylformamide kahi mea hoʻoheheʻe polar aprotic maikaʻi loa e hiki ke hoʻoheheʻe i ka hapa nui o nā mea organik a me nā mea ʻole a hiki ke hui pū me ka wai, nā ʻawaʻawa, nā ethers, aldehydes, ketones, esters, halogenated hydrocarbons a aromatic hydrocarbons. . Hoʻopuni ʻia ka hopena maikaʻi o ka mole N,N-dimethylformamide e nā pūʻulu methyl, e hana ana i kahi pale Chemicalbook spatial e pale ai i nā ion maikaʻi ʻole mai ka hoʻokokoke ʻana a hoʻopili wale i nā ion maikaʻi. ʻOi aku ka ʻoi aku o ka ʻeleʻele ma mua o nā anion i hoʻopaʻa ʻia. ʻOi aku ka maʻalahi o ka hana ʻana ma N,N-dimethylformamide ma mua o nā solvents protic maʻamau. No ka laʻana, hana ka carboxylates a me ka halogenated hydrocarbons i N,N-dimethylformamide ma ka lumi wela. , hiki ke hoʻohua i nā esters me nā hua kiʻekiʻe, a kūpono loa ia no ka hoʻohui ʻana i nā esters sterically hindered.

Kahua noi

wehewehe kūkulu

N,N-Dimethylformamide

CAS 68-12-2

Helu CBN: CB2854115

ʻAno molekole: C3H7NO

ʻO ke kaumaha molekala 73.09

Ka helu hehee: -61°C (kukui.)

ʻO ka hoʻololi kikoʻī: 0.94º

Puni paila: 153°C (māmā)

Māmā: 0.944g/mL (māmā) V

apor Chemicalbook Puke mahu: 2.5 (vsair)

Pumi mahu: 2.7mmHg ( 20°C) Helu hoʻohālua: n20/D1.430(lit.)

Kuhikuhi uila: 136°

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