Oxalic acidose mea fa'aola.O le vailaʻau o le H₂C₂O₄.O se mea e maua mai le metabolic o meaola.E lua ona vaega vaivai acid.E salalau lautele i laau, manu, ma tino fungal.E faia ai galuega eseese i mea ola eseese.O le mea lea, o le oxalic acid e masani ona manatu o se faʻalavelave mo le faʻaogaina ma le faʻaogaina o elemene elemene.O lona anhydride o le carbon trioxide.
Uiga:Pepa monoclinic lanu po'o tioata prismatic po'o pa'epa'e pa'epa'e, oxalic acid e leai se manogi e oxidation, oxalic acid tofo e ala i le synthesis.Sublimation i le 150 ~ 160 ℃.E mafai ona tau i le ea matutu vevela.1g e solu i le 7mL vai, 2mL vai fa'apuna, 2.5mL ethanol, 1.8mL fa'apuna ethanol, 100mL eter, 5.5mL glycerin, ma e le mafai ona solu ile benzene, chloroform ma petroleum eter.Ole vaifofo ole 0.1mol/L e iai le pH ole 1.3.Ole va'aiga (vai =1) ole 1.653.Liu liusuavai 189.5 ℃.
mea tau vaila'au:Oxalic acid, e lauiloa foi o le glycolic acid, e masani ona maua i meaʻai laau.Oxalic acid o se tioata koluma e leai ni lanu, e mafai ona solu i le vai nai lo le solu faʻaletino pei ole eter,
Oxalate e malosi lona fa'amaopoopo fa'atasi ma o se isi ituaiga u'amea chelating agent i mea'ai laau.Pe a tuʻufaʻatasia le oxalic acid ma nisi elemene uʻamea alkaline eleele, o lona solubility e matua faʻaitiitia, e pei o le calcium oxalate e toetoe lava a le mafai ona solu i le vai.O le mea lea, o le i ai o le oxalic acid e iai sona aafiaga tele i le bioavailability o minerale taua;Pe a tuʻufaʻatasia le oxalic acid ma nisi elemene uʻamea suiga, e faʻatupuina faʻalavelave soluble ona o le faʻamaopoopoina o gaioiga o le oxalic acid, ma o latou solubility e matua faateleina.
Oxalic acid na amata ona faʻafefe i le 100 ℃, faʻavave ona faʻapipiʻi i le 125 ℃, ma faʻateleina i le 157 ℃, ma amata ona pala.
E mafai ona tali atu i le alkali, e mafai ona maua esterification, acyl halogenation, tali amide.E mafai fo'i ona tupu fa'aitiitiga fa'aitiitiga, ma e mafai ona tupu fa'a'avevela i lalo ole vevela.Anhydrous oxalic acid e hygroscopic.Oxalic acid e fa'atupuina ai vai-soluble complexes ma le tele o metala.
Oxalate masani:1, Sodium oxalate;2, Potassium oxalate;3, Calcium oxalate;4, Ferrous oxalate;5, Antimoni oxalate;6, Ammonium hydrogen oxalate;7, Magnesium oxalate 8, Lithium oxalate.
Talosaga:
1. Su'i fa'alavelave, so'o fa'apipi'i, so'o fa'ato'a, sui fa'aitiitia.E faʻaaogaina mo le fuafuaina o beryllium, calcium, chromium, auro, manganese, strontium, thorium ma isi uamea.Su'esu'ega Picocrystal mo le sodium ma isi elemene.Fa'asalaina le calcium, magnesium, thorium ma elemene eleele e le masani ai.Fofo masani mo le faʻavasegaina o le potassium permanganate ma vaifofo cerous sulfate.Pisitusi.Fesoasoani vali.E mafai foi ona faʻaaogaina e aveese ai le 'ele i luga o lavalava i totonu o fale faufale aʻo leʻi fufuluina le puipui puipui i fafo, aua e malosi le alkaline puipui e tatau ona muamua pulumu oxalic acid alkali.
2. Alamanuia tau vailaau faʻaaogaina i le gaosiga o aureomycin, oxytetracycline, streptomycin, borneol, vitamini B12, phenobarbital ma isi vailaʻau.Lomitusi ma le valiina pisinisi e faʻaaogaina e fai ma fesoasoani lanu, vailaʻau, vailaʻau faʻafomaʻi.Alamanuia palasitika mo le gaosiga o PVC, amino palasitika, urea - formaldehyde palasitika.
3. Faʻaaogaina e avea o se faʻamalosi mo le faʻapipiʻiina o le resini phenolic, o le tali faʻamaʻi e agamalu, o le faagasologa e matua mautu, ma o le umi e sili ona umi.Ole vaifofo ole acetone oxalate e mafai ona fa'afefeteina le fa'amalologa ole epoxy resin ma fa'apu'upu'u taimi fa'amalolo.Fa'aaogaina fo'i e pei o le urea formaldehyde resin, melamine formaldehyde resin pH regulator.E mafai foi ona faaopoopo i le polyvinyl formaldehyde vai-soluble faʻapipiʻi e faʻaleleia ai le saoasaoa faʻagogo ma le malosi faʻapipiʻi.Fa'aaogaina fo'i e fai ma sui fa'amalolo resini urea formaldehyde, so'o fa'a'ele'ele ion uamea.E mafai ona faʻaaogaina e fai ma faʻavavevave mo le saunia o mea faʻapipiʻi masoa ma le KMnO4 oxidant e faʻavave ai le fua o le faʻamaʻiina ma faʻapuupuu le taimi faʻaalia.
I le avea ai o se mea e fa'amama ai:
Oxalic acid e masani ona faʻaaogaina e fai ma sui faʻaitiitia ma pisapisao, faʻaaogaina i le gaosiga o vailaʻau faʻamaʻi ma borneol ma isi vailaʻau, faʻapea foʻi ma le faʻamamaina o uʻamea e le masani ai, vailaʻau faʻaitiitiga, vailaʻau tanning, ma isi.
Oxalic acid e mafai foi ona faʻaaogaina i le gaosiga o cobalt-molybdenum-aluminum catalysts, faʻamamaina o metala ma maamora, ma le faʻamalama o ie.
Fa'aaogaina mo le fa'amamāina ma le togafitiga o le u'amea, fa'atosina elemene eleele, lomitusi ie ma vali, gaosiga o pa'u, sauniuniga fa'amalosi, ma isi.
I le avea ai o se sui faʻaitiitia:
I totonu o le alamanuia faʻasologa faʻasolosolo e masani ona faʻaaogaina i le gaosiga o le hydroquinone, pentaerythritol, cobalt oxalate, nickel oxalate, gallic acid ma isi vailaʻau.
Alamanuia palasitika mo le gaosiga o PVC, palasitika amino, urea - palasitika formaldehyde, vali, ma isi.
O lo'o fa'aaogaina le vai e gaosia ai le lanu meamata ma isi.
O pisinisi lomitusi ma vali e mafai ona suitulaga i le acetic acid, faʻaaogaina e fai ma fesoasoani lanu paʻu, vailaʻau faʻamaʻi.
Alamanuia tau vailaau mo le gaosiga o aureomycin, tetracycline, streptomycin, ephedrine.
E le gata i lea, o le oxalic acid e mafai foi ona faʻaaogaina i le tuʻufaʻatasia o ester oxalate eseese, oxalate ma oxalamide oloa, ma le diethyl oxalate, sodium oxalate, calcium oxalate ma isi oloa e sili ona aoga.
Auala e teu ai:
1. Faamaufaailoga i se nofoaga matutu ma malulu.Fa'asa'o fa'asusu, fa'asuava ma fa'aola.O le vevela o le teuina e le tatau ona sili atu i le 40℃.
2. Taofi ese mai oxides ma mea alkaline.Fa'aoga taga lalaga polypropylene e laina i taga palasitika, 25kg/pe.
I le aotelega, o le oxalic acid o se vailaʻau faʻapitoa ma le tele o faʻaoga i le tele o alamanuia.O ona meatotino ua avea ai ma filifiliga lelei mo le fa'amamāina, fa'amamāina ma le fa'amalama, ma e tele fo'i ona fa'aoga i fale 'ie, fa'ato'aga ma fale u'amea.Ae ui i lea, e tatau ona faia puipuiga pe a faʻaaogaina lenei vailaʻau, aua e oona ma e mafai ona afaina pe a le taulimaina lelei.
Taimi meli: Me-30-2023