Khoom npe:acetic acid

Molecular hom:C2H4O2

CAS Nr:64-19-7 ib

Cov khoom siv molecular:

Specification:

Chemical Properties:

Acetic acid, CH3COOH, yog cov kua tsis muaj xim, tsis muaj kuab lom ntawm qhov kub thiab txias.Cov ntshiab compound, glacial acetic acid, tshuav nws lub npe rau nws cov dej khov zoo li crystalline tsos ntawm 15.6 ° C.Raws li feem ntau muab, acetic acid yog 6 N aqueous tov (kwv yees 36%) lossis 1 N tov (kwv yees 6%).Cov no los yog lwm yam dilutions yog siv los ntxiv qhov tsim nyog ntawm acetic acid rau cov khoom noj.Acetic acid yog cov yam ntxwv acid ntawm vinegar, nws cov concentration ntawm 3.5 mus rau 5.6%.Acetic acid thiab acetates muaj nyob rau hauv feem ntau cov nroj tsuag thiab tsiaj cov ntaub so ntswg nyob rau hauv me me tab sis ntes tau.Lawv yog cov metabolic intermediates ib txwm, yog tsim los ntawm cov kab mob xws li Acetobacteria thiab tuaj yeem tsim los ntawm carbon dioxide los ntawm cov kab mob xws li Clostridium thermoaceticum.Cov nas ua acetate ntawm tus nqi ntawm 1% ntawm nws lub cev hnyav ib hnub.

Raws li cov kua tsis muaj xim nrog lub zog, pungent, yam ntxwv vinegar tsw, nws yog ib qho tseem ceeb nyob rau hauv butter, cheese, txiv hmab txiv ntoo thiab txiv hmab txiv ntoo flavors.Cov ntshiab acetic acid tsawg heev yog siv rau hauv cov khoom noj, txawm hais tias nws raug cais los ntawm FDA ua GRAS khoom.Yog li ntawd, nws tuaj yeem siv rau hauv cov khoom lag luam uas tsis suav nrog Cov Lus Txhais thiab Cov Qauv ntawm Tus Kheej.Acetic acid yog cov khoom tseem ceeb ntawm vinegars thiab pyroigneous acid.Nyob rau hauv daim ntawv ntawm vinegar, ntau tshaj 27 lab lbs tau ntxiv rau cov zaub mov nyob rau hauv 1986, nrog kwv yees li sib npaug zos npaum li cas siv raws li acidulants thiab flavoring agents.Qhov tseeb, acetic acid (raws li vinegar) yog ib qho ntawm cov tshuaj tsw qab tshaj plaws.Vinegars tau siv dav hauv kev npaj zaub xam lav hnav khaub ncaws thiab mayonnaise, qaub thiab qab zib pickles thiab ntau cov kua ntses thiab catsups.Lawv kuj tau siv rau hauv kev kho cov nqaij thiab hauv cov kaus poom ntawm qee yam zaub.Hauv kev tsim cov mayonnaise, qhov sib ntxiv ntawm ib feem ntawm acetic acid (vinegar) rau ntsev - lossis qab zib-yolk txo cov cua sov ntawm Salmonella.Cov dej sib xyaw ua ke ntawm cov hnyuv ntxwm feem ntau suav nrog acetic acid lossis nws cov ntsev ntsev, thaum calcium acetate yog siv los khaws cov kev ntxhib los mos ntawm cov zaub qhwv, cov kaus poom.

Daim ntawv thov:
Kev siv acetic acid hauv kev lag luam

1. Siv nyob rau hauv cov synthesis ntawm dyes thiab inks.

2. Nws yog siv nyob rau hauv lub synthesis ntawm fragrances.

3. Nws yog siv rau hauv kev lag luam roj hmab thiab yas.Nws yog siv los ua cov kuab tshuaj thiab pib cov khoom siv rau ntau yam tseem ceeb polymers hauv kev lag luam roj hmab thiab yas (xws li PVA, PET, thiab lwm yam).

4. Nws yog siv los ua cov khoom pib rau cov xim thiab cov nplaum nplaum

5. Siv nyob rau hauv kev lag luam ua zaub mov raws li ib tug additive nyob rau hauv cheese thiab sauces thiab raws li ib tug zaub mov preservative.

Kev siv cov acetic acid hauv tshuaj synthesis

1.Siv nyob rau hauv lub synthesis ntawm cellulose acetate.Cellulose acetate yog siv hauv cov duab thaij duab thiab textiles.Ua ntej kev tsim cov yeeb yaj kiab cellulose acetate, cov duab thaij duab tau siv los ua cov nitrate, uas muaj ntau yam teeb meem kev nyab xeeb.

2. Siv los ua cov kuab tshuaj rau cov synthesis ntawm terephthalic acid.Paraxylene yog oxidized rau terephthalic acid.Terephthalic acid yog siv los tsim PET, uas yog dav siv los ua lub raj mis yas.

3. Siv dav hauv cov tshuaj tiv thaiv nrog ntau yam cawv los ua ke esters.Acetate derivatives yog dav siv los ua zaub mov additives.

4. Siv nyob rau hauv lub synthesis ntawm vinyl acetate monomer.Cov monomer tuaj yeem ua polymerized los ua poly (vinyl acetate) uas feem ntau hu ua PVA.pVA muaj ntau yam kev siv los ntawm cov tshuaj (vim nws biocompatibility rau nanotechnology (raws li stabilizer) rau ntawv ua).

5. Siv los ua cov kuab tshuaj hauv ntau cov tshuaj organocatalytic.

Kev siv acetic acid hauv tshuaj

1. Acetic acid yog siv rau hauv cov txheej txheem hu ua pigmented endoscopy, uas yog lwm txoj hauv kev siv tshuaj endoscopy.

2. Acetic acid yog siv los kuaj pom kev mob qog noj ntshav thiab qhov txhab.Nws kuj tseem siv rau kev kuaj mob qog noj ntshav hauv tsev menyuam.

3. Acetic acid yog siv los kho otitis externa.

4. Qee zaum acetic acid yog siv los kho cov kab mob thiab cov kab mob fungal.

5. Hauv kev sim tshuaj rau cov nas, acetic acid tau pom tias yuav txo tau cov kab mob hauv cov nas.

Kev siv tsev neeg ntawm acetic acid

1. Acetic acid yog cov khoom tseem ceeb ntawm vinegar.

2. Vinegar yog siv rau pickling zaub

3. Nws yog siv rau nyias hnav khaub ncaws

4. Nws yog siv rau hauv cov txheej txheem ci.Nws reacts nrog ci dej qab zib los tso cov pa roj carbon dioxide ua kom cov zaub mov fluffy.

5.Siv raws li tus neeg sawv cev antifungal.