N,N-dimethylformamide yog cov kua tsis muaj xim pob tshab. Nws tuaj yeem sib xyaw nrog dej thiab feem ntau cov kuab tshuaj organic tshwj tsis yog halogenated hydrocarbons, thiab muaj kev yaj zoo rau ntau yam organic thiab inorganic compounds.

N,N-dimethylformamide (DMF) muaj ntau yam kev siv, feem ntau suav nrog cov hauv qab no:

1. Ua ib qho organic solvent:

DMF yog cov kuab tshuaj organic zoo heev uas tuaj yeem yaj ntau yam organic thiab inorganic sib xyaw thiab muaj zog solubility.

Hauv kev lag luam tshuaj polymer, nws yog siv rau kev sib xyaw ua ke ntawm cov xov paj hluavtaws xws li polyacrylonitrile fibers, kev tsim cov polyurethanes, thiab kev ua cov yas zaj duab xis.

2. Ua ib yam khoom siv tshuaj lom neeg:
DMF yog ib qho tshuaj tiv thaiv zoo heev hauv ntau yam tshuaj tiv thaiv, uas tuaj yeem txo qhov kub ntawm cov tshuaj tiv thaiv thiab txhim kho qhov huv ntawm cov khoom.

Hauv kev tsim cov organic, DMF, ua ib qho tseem ceeb nruab nrab, koom nrog kev tsim ntau yam organic sib xyaw.

3. Daim ntawv thov hauv kev lag luam tshuaj:
DMF yog siv los ua ntau yam tshuaj, xws li iodine pyrimidine, doxycycline, cortisone, thiab lwm yam.
Kev lag luam tshuaj feem ntau siv DMF rau kev tsim tshuaj, tshwj xeeb tshaj yog kev tsim cov tshuaj ntawm qee cov organic molecules nyuaj.
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4. Cov ntawv thov hauv lwm qhov chaw:
Hauv kev lag luam hluav taws xob, DMF siv los tsim cov yeeb yaj kiab capacitor thiab cov laug cam luam tawm.
Nws kuj tseem siv tau ua cov tshuaj reagent analytical, cov kuab tshuaj rau vinyl resins thiab acetylene, cov tshuaj extractant, thiab cov khoom siv raw rau cov tshuaj tua kab chlordimeform.
Hauv kev lag luam petrochemical, DMF tuaj yeem siv los ua cov roj nqus rau kev sib cais thiab ua kom cov roj huv.

Cov Khoom Siv Tshuaj N, N-Dimethylformamide
Melting point -61 °C (lit.)
alpha 0.94 º
Kub taw tes 153 ° C (lit.)
Qhov ceev 0.944 g/mL (lit.)
qhov ceev ntawm cov pa dej 2.5 (piv rau huab cua)
siab ntawm cov pa dej 2.7 hli Hg (20 °C)
Qhov ntsuas refractive n20 / D 1.430 (lit.)
Kub 136 °F
Qhov kub cia khoom. Khaws cia ntawm +5°C txog +30°C.
dej solubility: sib xyaw ua ke
ua kua
pka -0.44±0.70(Kwv yees)
xim APHA: ≤15
Tsw Qab Me ntsis, zoo li ammonia pom tau ntawm 100 ppm
Kev sib raug zoo polarity 0.386
PH 7 (200g/l, H2O, 20℃)
txwv tsis pub tawg 2.2-16% (V)
Qhov Ntsuas Qhov Hnov 1.8ppm
Kev yaj dej soluble
Rhiab Hygroscopic
λmax λ: 270 nm Amax: 1.00
λ: 275 nm Amax: 0.30
λ: 295 nm Amax: 0.10
λ: 310 nm Amax: 0.05
λ: 340-400 nm Amax: 0.01
Merck 14,3243
BRN 605365

Cov Ntaub Ntawv Tiv Tauj