Igama lemveliso:Oxalic acid
Imo yemolekyuli:C2H2O4
Inombolo yeCAS:144-62-7
Ulwakhiwo lwemolekyuli yemveliso:
I-asidi ye-oxalic isasazwa ngokubanzi kwisityalo kwindalo, ininzi ekhoyo ngendlela yetyuwa ye-oxalic acid.I-CW Scheele yenza okokuqala i-oxalate ngo-1776.
I-Oxalate yeyona asidi inamandla phakathi kwe-dicarboxylic acid.Ngaphandle kokuba neempawu eziqhelekileyo ze-carboxylic acid, ikwanepropathi ecuthayo kwaye inokunciphisa ngokobungakanani i-valence manganese esixhenxe ukuya kwi-bivalent manganese.Le ndawo ihlala isetyenziselwa uhlalutyo lobungakanani be-potassium permanganate.
5 C2H2O4 + 2 KMnO4 + 3 H2SO4 →K2SO4 + 2 MNSO4 + 8H2O + 10 CO2;
I-asidi ye-Oxalic inokunciphisa i-iron ene-trivalent ibe yi-iron bivalent.Ngenxa yokunyibilika okuphezulu kwentsimbi ye-bivalent emanzini, sinokusebenzisa lo mgaqo ukususa umhlwa kwiingubo.
Iasidi ye-Oxalic inokusabela kunye ne-phosphorus pentachloride ukuvelisa i-phosphorus oxychloride.C2H2O4 + PCl5 → POCl3 + CO + CO2 + 2 HCL.
Iasidi ye-Oxalic inokusabela ngeentsimbi ezininzi ukuvelisa ityuwa ye-oxalic acid.Ukongeza kwityuwa yesinyithi yealkali kunye neetyuwa zentsimbi ezibivalent kunye netyuwa eseleyo ye-oxalic acid ayinyibiliki kakuhle emanzini.Enye ityuwa yesinyithi, nangona inganyibiliki kakuhle emanzini, inokwenza izinto ezintsonkothileyo ezinyibilikayo emanzini.
Fe2 (C2O4) 3 + 3 K2C2O4 + 6 H2O →2 K3 [Fe (C2O4) 3] • 6 H2O.
Ekufudumeni, isinyithi sealkali kunye ne-alkaline yomhlaba isinyithi i-oxalic acid ityuwa inokulahlekelwa yi-carbon monoxide kwaye yenze i-carbonates kunye ne-carbonate eqhubekayo iphantsi kokufudumala ukuze iboliswe ngakumbi kwi-oxide kunye ne-carbon dioxide.Ityuwa ye-oxalic ye-nickel, i-cobalt kunye nesilivere ekugqibeleni inokuvelisa isinyithi endaweni ye-nonmetal oxide.
Iimveliso ezibolayo ze-oxalate yi-carbon dioxide, i-carbon monoxide kunye namanzi.
Ityuwa ye-oxalate kunye ne-oxalic acid ziyityhefu.Iigundane, ngokulawulwa komlomo, zine-LD50 ye-2000 ~ 4000 mg / kg.
1. I-asidi ye-oxalic ingasetyenziselwa ubukhulu becala njenge-arhente yokunciphisa kunye ne-ejenti ye-bleaching, i-mordant yokudaya kunye noshishino lokushicilela, isetyenziselwa ukucokisa isinyithi esinqabileyo, ukuhlanganiswa kwe-oxalate ester amide eyahlukeneyo, i-oxalate kunye nengca, njl.
2. Isetyenziswe njenge-reagent yohlalutyo.
3. Isetyenziswe njengeejenti zebhubhoratri, i-reagent yohlalutyo lwe-chromatography, i-dayi ephakathi kunye nezinto eziqhelekileyo.
4. Oxalic acid ikakhulu isetyenziselwa ukuvelisa amachiza ezifana antibiotics kunye borneol kunye nenyibilikisi yokuhluza metal ezinqabileyo, arhente ukunciphisa kunye nedayi, arhente ukushuka, njl. Ukongeza, acid oxalic ingasetyenziselwa ukudibanisa iintlobo ezahlukeneyo oxalate. I-ester, i-oxalate, kunye ne-oxamide ene-diethyl oxalate, i-sodium oxalate kunye ne-calcium oxalate enesivuno esikhulu.I-oxalate ingasetyenziselwa ukuveliswa kwe-cobalt-molybdenum-alumina catalyst, ukucocwa kwesinyithi kunye ne-marble kunye nokuxutywa kwe-bleaching of textiles.
I-Chemwin inokubonelela ngoluhlu olubanzi lwee-hydrocarbons ezininzi kunye nezinyibilikisi zeekhemikhali kubathengi bamashishini.Ngaphambi koko, nceda ufunde olu lwazi lulandelayo olusisiseko malunga nokwenza ishishini nathi:
1. Ukhuseleko
Ukhuseleko yeyona nto iphambili kuthi.Ukongeza ekunikeni abathengi ngolwazi malunga nokusetyenziswa ngokukhuselekileyo nokuhambelana nokusingqongileyo kweemveliso zethu, sikwazimisele ekuqinisekiseni ukuba imingcipheko yokhuseleko lwabasebenzi kunye neekontraka ziyathotywa ukuya kutsho kubuncinane obufanelekileyo nobunokwenzeka.Ngoko ke, sifuna ukuba umthengi aqinisekise ukuba imigangatho efanelekileyo yokukhutshwa kunye nokugcinwa kwemigangatho yokhuseleko idibene ngaphambi kokunikezelwa kwethu (nceda ubhekisele kwisihlomelo se-HSSE kwimimiselo jikelele kunye neemeko zokuthengisa ngezantsi).Iingcali zethu zeHSSE zinokubonelela ngesikhokelo kule migangatho.
2. Indlela yokuhambisa
Abathengi banokuodola kwaye bahambise iimveliso kwi-chemwin, okanye banokufumana iimveliso kwisityalo sethu sokuvelisa.Iindlela ezikhoyo zothutho ziquka iilori, uloliwe okanye uthutho lweendlela ezininzi (kuyasebenza iimeko ezahlukileyo).
Kwimeko yeemfuno zabathengi, sinokucacisa iimfuno zeenqanawa okanye iitanki kwaye sisebenzise imigangatho ekhethekileyo yokhuseleko / ukuhlaziya kunye neemfuno.
3. Ubuncinci bobungakanani bomyalelo
Ukuba uthenga iimveliso kwiwebhusayithi yethu, ubungakanani obuncinci bomyalelo ziitoni ezingama-30.
4.Intlawulo
Indlela yokuhlawula eqhelekileyo itsalwa ngokuthe ngqo kwiintsuku ezingama-30 kwi-invoyisi.
5. Amaxwebhu okuhanjiswa
La maxwebhu alandelayo anikwe ngokuziswa ngakunye:
· Ibhili yokuLading, i-CMR Waybill okanye olunye uxwebhu olufanelekileyo lwezothutho
· Isatifikethi sokuHlalutya okanye ukuThobela (ukuba siyafuneka)
· Amaxwebhu anxulumene neHSSE ngokuhambelana nemigaqo
· Amaxwebhu ezinto eziqhelekileyo ngokuhambelana nemigaqo (ukuba kuyafuneka)
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