Formic acid

Formic acid (E 236, methanoic acid) ziquka asidi monocarboxylic (ifumile) uba kwindawo yokuqala. Phantsi kweemeko eziqhelekileyo, iyeza le ulwelo enemibala. Le khemikhali formula formic acid HCOOH.

Ukongezelela iimpawu zayo asidi, libonisa umgangatho kunye aldehydes. Oku kungenxa isakhiwo izinto E236.

Le into yendalo efumaneka ngamarhawu, iinaliti, iziqhamo, netuwa abuhlungu kunye bee neembovane. Formic acid uyaziwa kuqala ochazwe ngenkulungwane ye-17. It unetyala igama layo ukuba into, ngenxa yokuba kwafumaneka iimbovane.

Ngokuqhelekileyo, eli candelo olusetyenziswa ukubola kunye arhente antibacterial kwi iindiza. Iipropati lwemichiza formic acid kubamba ukubola kunye ukubola. Kungenxa yoko le nto silage hay siphathwe kule into, iqhubeka ixesha elide. Iziyobisi kwakhona kusetyenziswa amayeza. Uboya bokudaya (mordant) bleach yesikhumba kwezikhumba, eziphantsi kolawulo irhorho apiculture nje kuphela ngexesha ezinye reactions siyasebenza formic acid.

Iipropati imichiza ukwimo iboniswe njengomsebenzi ukuzikisa ingqondo. Ukungqinelana ulwahlulohlulo EU, ukwakhiwa lwamanani ukuya kwi-10% onovozdeystvuet annoyingly, ngaphezulu kwama-10% - ezonakalisayo kuyo.

100% formic acid (ulwelo) xa udibana nesikhumba Uxhokonxwa ukutsha kakhulu kunene. Ukufumana nkqu imali encinane nto enamandla enjalo eseqweqweni ebangela ubuhlungu obukhulu. Le ndawo ochaphazelekayo kuqala iqalisa ziba mhlophe ngokungathi ligutyungelwe iqabaka ke uba efana amafutha. Ehlabathini ndawo baqhumisela eyenziwe umda ebomvu. Acid unako ngokukhawuleza ukungena amanqatha umaleko cutaneous, ngoko kuyimfuneko ukuba nangoko ukuvelisa nokuwahlamba kummandla ochaphazelekayo.

pair ucukene kwezinto inganako ukubangela umonakalo iphecana yokuphefumla kunye namehlo. Ngengozi ukubetha ngaphakathi, nkqu uhlobo olufakwe, methane acid ibangela gastroenteritis kakhulu uhlobo necrotic.

Umzimba ngokukhawuleza oguqula ubonisa kweziyobisi. Nangona kunjalo, kunye nale, E236 kunye formaldehyde, ezo luyasekwa a yityhefu kunye methanol, ukumqumbisa ukwenzakala kule luvo optic, de ube yimfama.

muravtinoy iityuwa acid na igama formates. Ukufudumeza ne kanzulu sulphuric acid kukhokelela E236 msinyane e H2O kunye CO esetyenziswa ukwenza carbon monoxide.

Namuhla okulungiswe formic acid evela sodium hayidroksayidi kunye carbon monoxide.

Iqondo kweziyobisi 100,7, ukukhenkcisa - degrees 8,25.

Xa iimeko igumbi E236 abole ukuya carbon monoxide kunye namanzi. Ngokutsho ubungqina zovavanyo, methane amandla lingaphezu acetic acid. Noko ke, ngenxa yokuba isakhono kwehlisa ngokukhawuleza kuqala, lisetyenziswa njengendlela kuphela kunqabile kakhulu.

Kukholelwa ukuba E236 nto hygroscopic kakhulu. Xa bekuhlolwa inkcitho kufunyaniswe ukuba imveliso kuqulunqo anhydrous ngokusebenzisa wezenzi dehydrating akwenzeki.

Formic acid contact olungasebenziyo kunye nomoya ofumileyo.

E236 limsulwa ngaphezulu kwama-99% kunokuqulunqwa evela isisombululo zolwelo, usebenzisa neyanamhlanje kwisigaba-mbini kunye nokusetyenziswa butyric acid. I ulwelo lokuqala ishenxisa kwamanzi amaninzi. Intsalela iya kuba malunga nama-77% kweziyobisi -th. Ukuze isicelo ukudlalwa yayo 3 - amaxesha 6 ubungakanani butyric acid ngohlobo umxube azeotropic.

Kwinkqubo okuvula bhotile E236 kufuneka silumke ngokukhethekileyo. Xa ukugcina uxinzelelo formic acid ezibalulekileyo enokuveliswa kwithuba elide apha ngesitya.