Asiti oxalic

Reserve carboxylic diacid le tebileng moralo C2H2O4 bitsoang ka acid e hlophisitsoeng nomenclature ethanedioic. komponeng ena e boetse e tsejoa ka ho ba bang lebitso la tloaeleha haholoanyane - acid e oxalic. E ile ea pele e hlahisoang ke ho Sejeremane setsebi sa k'hemistri F. Wohler tsa cyanogen (oxalic acid e dinitrile) ka 1824. kristale Colorless ea acid e ho qhalwa ho ya ka metsi a ya ho theha ditharollo colorless. molare boima e 90,04 g, / Mol. Le ponahalo e tšoana le kristale monoclinic colorless. Ho 20 ° C ka 100 g ya metsi a ne a qhibiliha 8 g ya acid e oxalic. Qhibilihang ka har'a ka monohalogen acetone, ethanol 'me ethyl phenylate. Segokanyipalo 1,36 g, / cm³. Qhibiliha ka 189,5 ° C, sublimes ka 125 ° C, bola ka 100-130 ° C.

thepa eohle ea lik'hemik'hale bath ea acid e carboxylic, oxalic acid e nang le tsona. Mokgwa wa ho Nahana e: HOOC-COOH. Ho sa tsotellehe 'nete ea hore e bua ka acid carboxylic ho nkoa e le matla acid e manyolo (makhetlo a 3000 le matla ho feta acid e acetic): C2O4H2 → C2O4H- + H + (pKa = 1.27) le ka ho eketsehileng: C2O4H- → C2O42 - + H + (Pk = 4.27). Esters le letsoai ea acid e ena ba bitsoa oxalate. C2O42- oxalate Ion ke moemeli fokotsa. Ka itšoara joang ea acid e oxalic le tharollo ea permanganate potassium (KMnO4) le ea bobeli e hlaphoheloa tharollo fetoha colorless. E tšoauoa ka itšoara joang reversible le butle phallang itsoara joang ka alcohols (esterification) ka lebaka la tseo esters li thehoa: HOOC-COOH + 2HOR ↔ 2H2O + ROOC-COOR.

Ho indasteri, acid e oxalic, fumanoa ka ho kena moea tsa metsoako lik'hemik'hale. Ka mohlala, ka ho ba teng ha ka vanadium sethothetsi (V2O5) motsoako oa asiti nitric (HNO3) le sulfuric (H2SO4) acid oxidize alcohols, glycols le lik'habohaedreite. Hape loketse mokhoa oa ethylene le acetylene ho kena moea le asiti nitric (HNO3) ka ho ba teng ha matsoai Palladium tsa Pd (NO3) 2 kapa PdCl2. asiti Oxalic hlahisoang tloha propylene, e mokelikeli e oxidized ke naetrojene dioxide e (NO2). Ho na le e ntle tebello tshepetso lokisetsa itsoara joang ka ea acid e le hydroxide sodium (NaOH) le carbon monoxide (CO) ka ho ba sethaleng lipakeng tsa sebopeho sa formate sodium: NaOH + CO → HCOONa. Joale e ntan'o ba thehoa sodium oxalate le hydrogen e lokolloa: HCOONa + NaOH → NaOOC-COONa + H2 ↑. Tsa oxalate sodium ka tikoloho asiti fumana acid e oxalic: NaOOC-COONa + 2H + → HOOC-COOH + 2Na +.

dikopo tsa sehlooho tsa acid e oxalic - ho hloekisa kapa soeufatsa. Oxalic acid e ka ka katleho tlosa ratoa ke mafome, kahoo tse ngata ho hloekisa ho bolela di na le dipegelo e komponeng lik'hemik'hale. Hoo e ka bang kotara ea acid e oxalic hlahiswa e sebediswa e le mordant bakeng daea li le letlalo le Textile liindasteri. E le ka boela sebelisoa e le reagent (GOST 22180-76) ka k'hemistri katisediwa. Etandioevaya acid e dihydrate (HOOC-COOH • H2O) TU 2431-002-77057039-2006 le karoloana boima ba ntho mantlha ≥ 99,3% e sebelisoa ka dithulaganyo tlhahiso ea tswakana manyolo bakeng sa tlhoekiso ea mafome le tekanyo e tšepe tsa soeufala ka sectioning microscopy. Beekeepers sebelisa ya oxalic acid e tharollo le karoloana boima ba 3.2% ka tsoekere sirapo bakeng sa ho loantša ho mite parasitic. Holim 'a dibopeho phethoeng mabole holim'a lona tšoaroa ho tiise le ho ba fa glints.

asiti Oxalic le oxalates teng dimela tse ngata, ho akarelletsa le black tea, a fumanoa ka liphoofolo. Tšenyo ka sehloohong ho batho e amanang le ho hloleha renal, eo e hlaha ka lebaka la ho sebelisana ea acid e oxalic le k'halsiamo, ea fella ka hore pula ea tiileng k'halsiamo oxalate (SaS2O4) - the karolo sehloohong majoe a liphio. Acid e qholotsa bohloko kopanetsoeng e loketseng ho pula ea metsoako e joalo ho tsona. asiti Oxalic ka etsoa 'meleng ke metabolism ea ethylene tsoang tikoloho (mohlala,-ba khahlanong le icing bolela bakeng sa sebetsana le lifofane tse ea seaplane le lifofane, hammoho le mehloli e meng e entsoeng ke motho). mathata a ka bang teng ka oxalate ka 'mele oa motho li ka aroloa ka tse peli. Pele - bohlokoa macrocell k'halsiamo tlama oxalic acid e le khaello lona Ho thehoa ka lisele tsa lisele le litho tsa ka hare. Ea bobeli - sebopeho sa majoe a liphio. Palo e khōlō ea acid e oxalic tse makhasi spinach le bakoa tsa rhubarb, sorrel, beet, parsley, scallions.