Asidi formic

asidi Formic (E 236 asidi methanoic) monga zidulo monocarboxylic (zimalimbikitsa) ndi mu malo oyamba. M'mikhalidwe wabwinobwino, thunthu ndi madzi colorless. Mankhwala opangidwa formic asidi HCOOH.

Kuwonjezera tingachidziwe asidi, izo zikusonyeza khalidwe ndi aldehydes. Ichi ndi chifukwa kapangidwe ka zinthu E236.

Thunthu mwachibadwa zikuchitika opezeka lunguzi, masingano, zipatso, caustic ndi njuchi secretions ndi nyerere. asidi Formic anali woyamba anatulukira ndipo anafotokoza m'zaka 17. Iwo alitcha dzina mankhwala, chifukwa izo zinali kupezeka mu nyerere lapansi.

Childs, chigawo ntchito monga usawonongeke ndi wothandizila antibacterial mu chakudya cha. Chemical katundu asidi formic kubweza oipa ndipo inali kuwola. N'chifukwa chake silage ndi udzu ankachitira ndi mankhwala kulimbikirabe yaitali. thunthu amagwiritsidwanso ntchito mankhwala. The ankaudaya ubweya (mordant) monga jiki khungu khungu, mu ulamuliro wa tizilombo mu apiculture monga zosungunulira pamene ena zochita imagwiranso asidi formic.

The katundu mankhwala thunthu amaoneka ngati ntchito ya ndende. Mogwirizana ndi gulu EU, zikuchokera kachulukidwe wa 10% onovozdeystvuet annoyingly, kuposa 10% - zikuwononga kuti.

100% asidi formic (madzi) pokhudzana ndi khungu amakwiya zilonda zamoto kwambiri. Kupeza ngakhale pang'ono mu ndende ngati pachikuto amayambitsa kupweteka kwambiri. The zinkakhala m'dera woyamba wayamba kuyera ngati yokutidwa ndi chisanu ndiye zimakhala zofanana ndi sera. Kuzungulira bwalo anatentha aumbike mwa malire wofiira. Acid mwamsanga umalowa mu cutaneous wosanjikiza mafuta, choncho m'pofunika yomweyo kutulutsa kutsuka zinkakhala m'dera.

Anaikira awiri zinthu angathe kuchititsa kuwonongeka kwa thirakiti kupuma ndi maso. Mwangozi kumenya mkati, ngakhale mu maonekedwe sitimadzipereka, dziko asidi amachititsa aakulu gastroenteritis necrotic chikhalidwe.

thupi lonse mofulumira otembenuka ndipo amasonyeza thunthu. Komabe, pamodzi ndi izi, E236 ndi formaldehyde, amene anapanga pa poyizoni ndi methanol, imfayo zotupa mu mitsempha chamawonedwe, zikubweretsa khungu.

muravtinoy salt asidi ndi formates dzina. Kutentha ndi kuikapo maganizo asidi sulfuric kumabweretsa E236 degradable mu H2O ndi NKHA kuti ntchito kupanga mpweya monoxide.

M'mafakitale okonzeka formic asidi ku hydroxide ndi sodium ndi carbon monoxide.

Kuwira mfundo mankhwala 100,7, kuzizira - madigiri 8,25.

Pa zinthu chipinda E236 linawola kuti mpweya monoxide ndi madzi. Malinga ndi maumboni komanso mphamvu dziko kuposa asidi acetic. Komabe, chifukwa luso mofulumira amanyoza koyamba, ntchito ngati zosungunulira ndi osowa kwambiri.

Akukhulupirira kuti E236 ndi hygroscopic kwambiri. Pa zatsopano chinapezeka kuti ulimi wa chiphunzitso anhydrous pogwiritsa ntchito dehydrating reagents sizingatheke.

Formic asidi kukhudzana yosagwira ndi mpweya lonyowa.

E236 chiyero kuposa 99% angathe kukonzekera kuchokera amadzimadzi njira, ntchito awiri gawo distillation ndi ntchito asidi butyric. The distillation woyamba kumatha madzi chochuluka. The zotsalira adzakhala ali pafupifupi 77% -th mankhwala. Kutsatira playout ake 3 - nthawi 6 kuchuluka kwa asidi butyric mu mawonekedwe a osakaniza ndi azeotropic.

Mu ndondomeko ya kutsegula chidebe ndi E236 chiyenera kukhala osamala. Pamene kasungidwe formic asidi kwambiri kuthamanga ikhoza kupangidwa pa nthawi yaitali chotengeracho.