Acetic aldehyde. Zvisikwa uye zvinopisa zvinhu. Kuwana uye kushandisa

Acetic aldehyde (mamwe mazita: acetaldehyde, methylformaldehyde, ethanol) ishizha rinowanikwa mukirasi realdehydes. Ichi chinhu chinokosha kuvanhu, chinowanikwa mukofi, chingwa, michero yakaibva uye miriwo. Inogadzirwa nezvirimwa. Inoitika mumasikirwo uye inobudiswa muhuwandu hwevanhu. Nzira yeAlextic aldehyde: CH3-CHO.

Physical properties

1. Acetic aldehyde inenge isina mvura isina ruvara, iyo inofadza zvakashata.
2. Inopera zvakanaka mu ether, doro nemvura.
3. Masero ehurumende ndeye 44.05 gramu / mole.
4. Uwandu hunoita magiramu 0,7 / centimeter³.

Thermal properties

1. Chidimbu chinoputika -123 degrees.
2. Nyaya yekubikira ine madigiri makumi maviri.
3. Indesheni yekupisa inenge -39 degrees.
4. Kutonhora kwekudzivirira kwehupenyu kune 185 degrees.

Kugadzirira kweAactic aldehyde

1. Nzira huru yekuwana ichi chinhu ndechokuti inokonzera ethylene (iyo inonzi Wacker). Saka izvi zvinoratidzika se:
2CH2 = C2H4 (ethylene) + O2 (oksijeni) = 2CH3CHO (methylformaldehyde)

2. Uyewo, acetic aldehyde inogona kuwanikwa ne hydrating acetylene muhupo hwe mercury salts (iyo inonzi Kucherov inopindura). Izvi zvinogadzira phenol, iyo inobva yave isomerized to the aldehyde.

3. Nzira inotevera yaive yakakurumbira zvisati zvaitika pamberi pekuonekwa kweiyo pamusoro apa. Yakaitwa nehujijidhe kana kuti dehydrogenation ye ethyl doro pane sirivha kana cherosi inokonzera.

Kushandiswa kweAactic aldehyde

- Kuti uwane zvinhu zvipi zvaunoda acetic aldehyde? Acetic acid, butadiene, aldehyde polymers nezvimwe zvinhu zvinokonzerwa nezvinhu.
- Inoshandiswa sepamberi (chinhu chinobatanidzwa mukuita zvinotungamirira mukusikwa kwezvinhu zvinoshandiswa) kune acetic acid. Zvisinei, kushandiswa kwenyama inofungidzirwa nesu nokukurumidza kwakanyarara. Izvi zvakaitika nekuda kwekuti actic acid isiri nyore uye inodhura kuti ibudise kubva simbi pamwe nekubatsirana nemitemo ya Kativa naMonsanto.
- Methylformaldehyde inokosha inokosha yepentaerythritol, derivative derivatives uye crotonaldehyde.
- Kugadziriswa kwemabhururo nemhaka yekuti urea uye acetic aldehyde inokwanisa kukwanisa.
- Kugadzirira ethylidene diacetate, iyo iyo polyvinyl acetate (vinyl acetate) monomer inozobudiswa.

Kutengesa fodya uye acetic aldehyde

Ichi chinhu chinonyanya kukosha cheutsi hwefodya. Chiratidziro chekupedzisira chakaratidza kuti hukama hwe synergistic pakati peActic acid uye nicotine inowedzera kuratidzwa kwekuvimba (zvikurukuru mumunhu pasi pe makumi matatu).

Chirwere cheAlzheimer uye acetic aldehyde

Vanhu ivavo vasina ruzivo rwekushandura methylformaldehyde kune acetic acid vane dambudziko rakakura rekubatwa nechirwere chakadai senile dementia (kana chirwere cheAlzheimer), icho chinowanzoitika mukukwegura.

Doro uye methylformaldehyde

Zvichida, chinhu chatinenge tichichifunga ndechekemikari yevanhu, kubva zvino kune uchapupu hwehutachiona hweAactic aldehyde mumhando dzakasiyana-siyana dzezvipfuwo. Mukuwedzera, methylformaldehyde inokuvadza DNA, zvichikonzera kukura kusina kufanana kwemasisitemu, iyo inosanganiswa nekuputsa kweproteine metabolism mumuviri. Chidzidzo che 800 madorokwa akabatwa, semagumisiro ayo masayendisiti akasvika pamagumo ekuti vanhu vanoratidzika kune acetic aldehyde vane chiremera mujeni reine enzyme imwe - doro dehydrogenase. Nokuda kwechikonzero ichi, varwere vakadai vanowanzova nehanzvadzi yekenza uye yepamusoro yechiropa chirwere.

Chengetedzo

Ichi chinhu chinotyisa. Izvo zvinosvibisa mweya kana uchisvuta kana kubva pakuzara mumigwagwa.