Ammonium carbonate

Qhov no tshuaj yog heev nyob rau hauv lub neej txhua hnub, tab sis tej zaum tsuas nyob rau hauv cov chav nyob ntawm Science News for KIDS kws txawj, muaj yog ib tug associative link nws nrog tus paub thiab cov pa nws "txom nyem", uas peb siv nyob rau hauv lub neej txhua hnub.

Saum toj no tag nrho, ammonium carbonate - yog paub tias yuav tsum muaj ntaub ntawv rau tag nrho cov ntawv ntawm cov khoom noj E503 additive. Nws muaj ib tug qauv hluavtaws, thiab, raws li tau thov, nws theem ntawm txaus ntshai rau tib neeg noj qab haus huv yog xoom. Txawm li cas los xij, cov ntaub ntawv tsis ntev los no yog nug los ntawm qee cov kev tshawb fawb ntawm chemists.

Hauv kev lag luam khoom noj khoom haus, qhov yeeb tshuaj no yog siv los ua ib qho kev sib tshuam los yog emulsifier.

Cia peb xav txog qee qhov tshuaj ntawm cov kev npaj, cov khoom thiab cov kev siv ntawm cov chaw no. Raws li nws tau hais, nws yog feem ntau paub peb ntawm lub labeling li "E503 additive", qhov no yog ammonium carbonate uas peb xav tau. Nws - ammonievuya ntsev ntawm carbonic acid, tab sis lwm tus zoo-paub lub npe tag nrho cov ntawm cov tshuaj - ammonia. Hauv thawj lub xeev, hauv qhov tsos, nws tsis muaj kob uas muaj xim tsis txaus, uas yog qhov yooj yim heev nyob hauv cov kev daws teeb meem. Cov tshuaj formula molecular muaj daim ntawv: (NH4) 2CO3. Raws li lub cev nqaij daim tawv, ammonium carbonate yog volatile, uas yog, nws yog ib qho tsis ruaj tsis khov. Piv txwv, txawm tias nyob hauv chav sov thiab cua nkag, cov khoom pib oxidize thaum lub sij hawm qhov tshuaj tiv thaiv, uas ua rau cov roj ammonia, thiab tus thawj compound yog hloov mus rau ammonium bicarbonate. Ammonia nyob rau hauv lub xeev gaseous yog lom. Thaum twg qhov kub ntawm qhov nruab nrab ntawm qhov chaw khaws cia rau 60 ° C ntawm lub nce, nws twb tawg mus rau hauv cov dej hauv cov dej, lub ammonia thiab carbon dioxide roj peb paub.

Qhov no yog qhov qaug zog tshaj plaws ntawm cov roj cua hauv chav kawm ntawm cov tshuaj tiv thaiv thiab ua rau kev siv ammonium carbonate ua khoom noj khoom haus E503 nyob rau hauv industrial ntau lawm, feem ntau nyob rau hauv lub confectionery. Nws kuj yog siv dav hauv cov txiv hmab txiv ntoo ua ib qho kev hloov rau cov poov xab.

Nyob rau hauv niaj hnub tshuaj lom neeg kev lag luam, cov kev npaj ntawm ib cov tshuaj yog txuam nrog lub cua sov ntawm mixtures ntawm ammonium chloride. Reaction ntawm synthesis kuj tseem siv rov qab mus rau decomposition, thaum lub composition ntawm tsis muaj rhuab, tab sis, nyob rau hauv tsis tooj, sai txias. Pib, ammonium carbonate, tau los ntawm organics - horns ntawm nyuj, plaub hau, yog suav hais tias yog ib yam khoom uas yuav ua tau tsim ntawm tsuas yog kub heev.

Raws li teev saum toj no, qee cov kev kawm niaj hnub pib faib cov khoom ua kev phem. Qhov kev xaib no yog qhov meej tshaj plaws rau qhov tshuaj lom neeg ntawm cov roj ntsha ammonia. Qhov no tuaj yeem yooj yim to taub yog tias koj ua tib zoo soj ntsuam kev sib xyaw ntawm ammonium carbonate, kev sib raug zoo nrog cov kua qaub thiab cov tshuaj uas tsim los ntawm cov tshuaj tiv thaiv no. Yog li, nyob rau hauv nws cov hoob kawm tsim cov pa roj carbon dioxide thiab ammonia, tab sis ammonia, raws li hais tam sim ntawd volatilized li carbon dioxide. Yog li, tsuas yog dej nyob. Yog li ntawd, nws yog ib qho ua tau xav txog E503 kev siv tshuaj txaus ntshai rau tib neeg thiab lawv cov kev noj qab haus huv tsuas yog muaj qee yam caveat - nws tuaj yeem tsim kev raug mob thaum nws tseem nyob hauv nws lub xeev qub.

Yog li ntawd, kev siv ntawm no compound nyob rau hauv daim ntawv ntawm ib tug ntxiv kev noj haus yog pub txhua txhia qhov chaw thoob plaws ntiaj teb. Ua tiav daim ntawv pov thawj xaus, cov ntaub ntawv ntawm FSA - lub xeev tus txhim kho lub koom haum ntawm Great Britain yog siv ntawm no.

Yog li, kev siv cov additive yog li ntawd thoob plaws. Ntxiv nrog rau cov ntsiab lus uas twb tau hais lawm, cov khoom no yog siv, piv txwv li, hauv kev siv tshuaj ua kev lag luam ntawm ntau cov phoov, ntawm chav kawm - ammonia thiab lwm yam tshuaj. Nws kuj yog siv nyob rau hauv cov zus ntawm lub wines raws li tus accelerator fermentation, thiab, tshwj xeeb tshaj yog tsis ntev los no, raws li ib tug colorant hauv tshuaj pleev ib ce.