Acetaldehyde. guryaha jirka iyo kaamerada. Diyaarinta iyo Isticmaalka

Acetaldehyde (magacyada kale: metilformaldegid acetaldehyde, ethanal) - waa xarunta ah organic ka tirsan fasalka ee aldehydes. walax Tan waxaa muhiim u ah aadanaha, waxaa ku jirta qaxwada, kibistii, miraha iyo khudaarta bislaaday. Dhexsameeysmo by dhirta. Waxaa dabiici ah waxay dhacdaa oo la soo saaray ee u tiro badan by nin. formula Acetaldehyde: CH3-Cho.

guryaha jirka

1. Acetaldehyde - dareere ah midab isagoo a ur xun af badan.
2. Waa dhaba L. in ether, khamriga iyo biyaha.
3. mass The gaws of 44,05 grams / jirjirroolaha.
4. cufnaanta waa 0.7 g / santimetr³.

guryaha kaamerada

1. dhibic barafku waa -123 digrii.
2. dhibic karaya The waa 20 darajo.
3. heerkulka alaabeed The waa loo siman yahay si -39 digrii.
4. heerkulka alaabeed waa 185 digrii.

acetaldehyde diyaarinta

1. Habka aasaasiga ah ee diyaarinta walax this waa in lagu qayilo ee ethylene (wax-u-socodka Besian). Waxa ay u muuqataa sida cadaanyo this:
2CH2 = C2H4 (ethylene) + O2 (oxygen) = 2CH3CHO (metilformaldegid)

2. Sidoo kale, acetaldehyde laga been abuurtay by fuuq ee alxamaad iyadoo ay wada joogaan of mercury cusbada (wax-u reaction Kucherova). Tani waxay ku siinaysaa phenol a kaas oo markaas isomerized in aldehyde ah.

3. Habka socda ahaa caan ka hor dhalashada of habka kor ku xusan. Fulinayaan qayilo ama dehydrogenation of ethanol on lacag ama naxaas Hannaan.

Codsiga acetaldehyde

- u baahan tahay acetaldehyde Waayo, kuwaas oo walxaha? acid acetic, butadiene, polymers aldehyde, iyo qaar ka mid ah waxyaabaha kale ee organic.
- isticmaalaa sida maamaan ah (walax in ka qayb falcelinta taasoo keentay in abuurka ah ee walax diirada a) in acetic acid. Si kastaba ha ahaatee, tan iyo markii aan ka fiirsaneysa in aad dalbato walaxda ugu dhakhsaha badan joogsatay. Tani waxay dhacday sabab ah in acid ee acetic waa ka fudud yahay oo ka jaban in ay soo saaraan ka METALON by hababka Kativa iyo Monsanto.
- Metilformaldegid - maamaan ah u muhiim ah in pentaerythritol, taagayo pyridine iyo krotonaldegidu.
- Diyaarinta Beeyada ee ay sabab u tahay xaqiiqada ah in HOL iyo acetaldehyde leedahay awood aad ku soo degayaa.
- Diyaarinta diacetate ethylidene ka kaas oo markii dambe ay soo saaraan monomer polyvinyl (copolymer vinylalkohol).

tiirsanaanta Tubaakada iyo acetaldehyde

walax Tani - qayb muhiim ah oo sigaarka ah. Banaanbaxa ayaa dhawaan lagu qabtay, halkaas oo lagu muujiyay in xiriirka hammiga of acetic acid leh nicotine kordhiyaa muujinta ku tiirsanaanta (gaar ahaan dadka ka yar soddon sannadood).

Alzheimers Disease iyo acetaldehyde

dadka aan haysan factor beddelida metilformaldegida hidde galay acetic acid, waxay leeyihiin khatar sare ee cabista in cudurada sida dementia neefo (ama cudurka Alzheimers), kaas oo sida caadiga ah dhacdaa in da 'weyn.

Khamriga iyo metilformaldegid

Ajnabiga aan ku fekereyno maalkiisu waa kansarka ugu ah dadka, sida maanta, waxa jira caddeyn ah acetaldehyde cudurka kansarka in tijaabo xoolaha kala duwan. Intaa waxaa dheer, metilformaldegid magdhow DNA, oon ku keenaya dhigmin horumarinta miisaanka jidhka nidaamka muruqa ah, taas oo ku xiran yahay xadgudubku shiid borotiinka ee jirka ah. waxbarasho ah 800 khamriga la qabtay, kuwaas oo cilmi gabagabeeyey in dadka bandhigi acetaldehyde, waxaa jira iin ah hiddo-waayo, mid enzyme - dehydrogenase khamriga. Sababtan awgeed, bukaan oo kale waa halis weyn ee kansarka kelyaha iyo qaybta sare ee beerka.

ammaanka

maalkiisu waa sun. Waa ay suntu jirka ah ee jawiga lagu jiro sigaarka ama qiiqa ee saxmadda baabuurta.