Scandium yog cov khoom siv tshuaj lom neeg nrog lub cim Sc thiab atomic tooj 21. Nws yog ib qho mos, nyiaj dawb hloov pauv hlau nrog lub melting point ntawm 1541 degree thiab lub boiling point ntawm 2831 degree. Nws yog yooj yim soluble nyob rau hauv dej, tuaj yeem hnov mob nrog dej kub, thiab yooj yim darkens nyob rau hauv cov huab cua, nrog lub ntsiab valence ntawm ntxiv 3. Nws yog feem ntau tov nrog gadolinium, erbium, thiab lwm yam, nrog me ntsis ntau lawm, thiab cov ntsiab lus nyob rau hauv lub crust. yog li ntawm 0.0005 feem pua . Scandium feem ntau yog siv los ua cov iav tshwj xeeb thiab lub teeb kub-resistant alloy.
Scandium yog daj lossis liab me ntsis thaum oxidized los ntawm huab cua, yooj yim weathered thiab maj mam yaj nyob rau hauv feem ntau dilute acids. Txawm li cas los xij, txheej txheej impermeable passivation tau yooj yim tsim rau ntawm qhov chaw hauv cov kua qaub uas muaj zog, yog li nws tsis hnov mob nrog 1: 1 sib xyaw ntawm nitric acid (HNO3) thiab hydrofluoric acid (HF).
Scandium scandium earth Sc2O3 nyob rau hauv ampoules muaj ib qho kev nqus ntawm 3. Cov ntsev tsis muaj xim thiab tsim cov nag lossis daus colloidal nrog potassium hydroxide thiab sodium carbonate. Nws yog ib qho nyuaj rau tag nrho cov ntsev kom crystallize zoo. Scandium ntsev tsis muaj xim, tsim cov nag lossis daus nrog cov poov tshuaj hydroxide thiab sodium carbonate, thiab sulfate nyuaj heev rau crystallize. Carbonate yog insoluble nyob rau hauv dej thiab tej zaum yuav tsim alkaline carbonate nag lossis daus.
Scandium carbonate yog insoluble hauv dej thiab yooj yim tshem tawm carbon dioxide. Sulfuric acid ob ntsev yuav tsis tsim alum. Lub sulfuric acid ob ntsev ntawm scandium tsis tsim alum. Lub volatility ntawm anhydrous chloride ScCl3 yog qis dua li ntawm txhuas chloride, thiab nws yooj yim rau hydrolyze dua magnesium chloride. Qhov kub sublimation ntawm ScCl3 yog 850 degree, thaum AlCl3 yog 100 degree, uas yog hydrolyzed nyob rau hauv aqueous kua.
