Lebitso la Sehlahiswa:asiti ea acetic

Sebopeho sa molek'hule:C2H4O2

Nomoro ea CAS:64-19-7

Sehlahisoa sebopeho sa molek'hule:

Tlhaloso:

Lintho tsa Lik'hemik'hale:

Asiti ea Acetic, CH3COOH, ke mokelikeli o se nang 'mala, o fetohang mocheso o futhumetseng.Motsoako o hloekileng, glacial acetic acid, e rehiloe lebitso la eona ka ponahalo ea eona e kang leqhoa ho 15.6°C.Joalokaha ho fanoe ka kakaretso, asiti ea acetic ke tharollo ea metsi a 6 N (hoo e ka bang 36%) kapa tharollo ea 1 N (hoo e ka bang 6%).Lintho tsena kapa tse ling tse hlapollang li sebelisoa bakeng sa ho eketsa tekanyo e loketseng ea asiti ea acetic lijong.Acetic acid ke tšobotsi ea asiti ea asene, mahloriso a eona a tloha ho 3.5 ho isa ho 5.6%.Acetic acid le acetates li teng limela tse ngata le lisele tsa liphoofolo ka tekanyo e nyenyane empa e lemohuoa.Ke li-metabolism tse tloaelehileng, li hlahisoa ke mefuta ea baktheria e kang Acetobacter 'me e ka etsoa ka ho feletseng ho tloha carbon dioxide ka likokoana-hloko tse kang Clostridium thermoaceticum.Rato e etsa acetate ka tekanyo ea 1% ea boima ba 'mele oa eona ka letsatsi.

E le mokelikeli o se nang mebala o nang le monko o matla, o hlabang, o nang le sebōpeho sa asene, o na le thuso ho botoro, chisi, morara le tatso ea litholoana.Acetic acid e nyenyane haholo e hloekileng e sebelisoa lijong, leha e khetholloa ke FDA e le thepa ea GRAS.Ka lebaka leo, e kanna ea sebelisoa lihlahisoa tse sa kengoang ke Litlhaloso le Maemo a Boitsebiso.Acetic acid ke karolo ea mantlha ea asene le pyroligneous acid.Ka mofuta oa asene, ho ile ha eketsoa li-lb tse fetang limilione tse 27 lijong ka 1986, ka chelete e batlang e lekana e sebelisoang e le li-acidulants le li-flavoring agents.Ha e le hantle, acetic acid (joaloka asene) e ne e le e 'ngoe ea litlolo tsa pele tsa tatso.Li-vinegars li sebelisoa haholo ha ho lokisoa liaparo tsa salate le mayonnaise, li-pickle tse bolila le tse monate le li-sauces tse ngata le li-catsups.Li boetse li sebelisoa ho phekola nama le ho kenya meroho e itseng ka makotikoting.Ha ho etsoa mayonnaise, ho eketsoa ha karolo ea acetic acid (asene) ho letsoai kapa tsoekere-yolk ho fokotsa ho hanyetsa mocheso oa Salmonella.Metsoako e tlamang metsi ea lisoseje hangata e kenyelletsa asiti ea acetic kapa letsoai la eona la sodium, athe calcium acetate e sebelisetsoa ho boloka sebopeho sa meroho e halikiloeng, e entsoeng ka makotikoting.

Kopo:

Acetic acid e hlaha ka asene.E hlahisoa ka distillation e senyang ea lehong.E fumana ts'ebeliso e pharaletseng indastering ea lik'hemik'hale.E sebelisoa ha ho etsoa cellulose acetate, rayon ea acetate, le metsoako e fapaneng ea acetate le acetyl;e le sehlapolli sa marenene, oli le lirekane;e le se bolokang lijo ha ho hatisoa le ho daeang;le ho organicsynthesis.

Acetic acid ke k'hemik'hale ea bohlokoa ea indasteri.Boitšoaro ba acetic acid ka hydroxyl e nang le metsoako, haholo-holo lino tse tahang, bo fella ka ho thehoa ha acetate esters.Tšebeliso e kholo ka ho fetisisa ea acetic acid ke tlhahiso ea vinyl acetate.Vinyl acetate e ka hlahisoa ka karabelo ea acetylene le acetic acid.E boetse e hlahisoa ka ethylene le acetic acid.Vinyl acetate e entsoe ka polyvinyl acetate (PVA), e sebelisoang ho hlahisa likhoele, lifilimi, likhomaretsi le lipente tsa latex.
Cellulose acetate, e sebelisoang ka masela le filimi ea lifoto, e hlahisoa ka ho arabela selulose ka acetic acid le acetic anhydride ka pel'a sulfuric acid.Li-ester tse ling tsa acetic acid, tse kang ethyl acetate le propyl acetate, li sebelisoa mefuteng e fapaneng ea likopo.
Acetic acid e sebelisoa ho hlahisa polasetiki ea polyethylene terephthalate (PET).Acetic acid e sebelisoa ho hlahisa meriana.

Glacial Acetic Acid ke acidulant eo e leng mokelikeli o hlakileng, o se nang 'mala o nang le tatso ea asiti ha e hlapolotsoe ka metsi.Ke 99.5% kapa ho feta ka bohloeki 'me e phatsima ka 17°c.E sebelisoa liphahlong tsa salate ka mokhoa o hlapolotsoeng ho fana ka asiti e hlokahalang ea acetic.E sebelisoa e le ntho ea ho boloka, acidulant, le tatso.E boetse e bitsoa acetic acid, glacial.