Acetaldehyde. iipropati Physical kunye thermal. YokuLungiswa Sebenzisa

Acetaldehyde (amanye amagama: metilformaldegid acetaldehyde, ethanal) - yinto ulungelelwaniso ukubayinxalenye udidi aldehydes. Le nto kubalulekile ukuba abantu, oko ifumaneka ikofu, isonka, iziqhamo nencindi yemithi kunye nemifuno. Kuhlelwe zizityalo. Oku kwenzeka ngokwendalo kwaye lukhutshwe umntu kukuninzi. ifomula Acetaldehyde: CH3-cho.

iipropati ngokomzimba

1. Acetaldehyde - ulwelo ezingenambala kokuba ivumba elibukhali ezingemnandi.
2. lula enyibilikayo iEtere, utywala kunye namanzi.
3. Ubunzima izinyo ka-44,05 grams / nolovane.
4. konga 0.7 g / santimetr³.

iipropati thermal

1. Ingongoma yokunyibilika yi degrees -123.
2. Le abilayo ngu degrees 20.
3. Iqondo lobushushu ucinezelo ulingana degrees -39.
4. Le lobushushu ucinezelo yi degrees-185.

ukulungiselela acetaldehyde

1. Inkqubo esisiseko lokulungisa le nto kweli igcwala ethylene (njalo-ebizwa inkqubo Wacker). Kubonakala ngathi le yokusabela:
2CH2 = C2H4 (ethylene) + O2 (oksijini) = 2CH3CHO (metilformaldegid)

2. Kwakhona, acetaldehyde kungenziwa eveliswe ukuxovwa le iasithilini phambi iityuwa mercury (njalo-ebizwa reaction Kucherova). Oku kunika phenol nto leyo ke isomerized ukuya aldehyde.

3. Le ndlela ilandelayo lithandwa phambi kokufika nkqubo ingentla. Wabulawa yi igcwala okanye dehydrogenation -ethanol kwi isilivere okanye ubhedu kuvala.

acetaldehyde application

- udinga acetaldehyde Kuba apho izinto? Acetic acid, butadiene, iipholima aldehyde, kunye nezinye izinto eziphilayo.
- kusetyenziswa njengomanduleli (into leyo inxaxheba kwi indlela ekhokelela ekudalweni wenkqu ekujoliswe a) ukuya acetic acid. Noko ke, ekubeni thina sicinga ukusebenzisa iziyobisi kungekudala yaphela. Oku kwenzeka ngenxa yokuba acetic acid kulula kwaye sitshiphu ukuvelisa ukusuka METALON ngeenkqulx Kativa ne Monsanto.
- Metilformaldegid - i njengomanduleli ebalulekileyo pentaerythritol, avela pyridine kunye krotonaldegidu.
- Ukulungiswa nentlaka ngenxa yokuba urea kunye acetaldehyde bayakwazi ukuba ngamafuphi.
- Ukulungiswa ethylidene diacetate kuyo kamva ukuvelisa Polyvinyl monomer (IVinyl acetate).

ukuxhomekeka icuba acetaldehyde

Le nto - inxalenye ebalulekileyo umsi wecuba. umboniso yaqhutywa kutshanje, apho bekubonakalisiwe ukuba ulwalamano ihambelana of acetic acid kunye intshongo kwandisa amazwi ukuxhomekeka (ingakumbi abantu abangaphantsi kweminyaka engamashumi amathathu).

Isifo Alzheimer kunye acetaldehyde

Abo abantu abangenayo i uguqulelo yemfuza metilformaldegida factor ibe acetic acid, kufuneka emngciphekweni omkhulu ukuthambekela izifo ezifana esixhalabisayo saka (okanye isifo i-Alzheimer), nto leyo ngokuqhelekileyo kwenzeka ebudaleni.

Utywala kunye metilformaldegid

Mhlawumbe siye kuqwalaselwa ondoqo umhlaza, ngathi namhlanje, kukho ubungqina acetaldehyde umhlaza ukuhlola ezahlukeneyo zezilwanyana. Ukongezelela, metilformaldegid umonakalo DNA, ngaloo ndlela ebangela yophuhliso ubunzima bomzimba elibi kwinkqubo dystrophy, oludityaniswe wokunyhashwa protein yokucolwa emzimbeni. isifundo 800 otywala zaye zabanjwa, apho abaphandi bagqiba ukuba abantu bazi acetaldehyde, kukho isiphako kwi sofuzo kuba enzyme - dehydrogenase utywala. Ngenxa yesi sizathu, izigulane ezinjalo basengozini enkulu wokuhlaselwa ngumhlaza womlomo izintso nakumphezulu kususwa kunye nezintso ezo.

ukuphepha

Le into yityhefu. It is a ungcoliseko yeegesi ngexesha ukutshaya okanye exhausts e kwemikrozo yeemoto.