Tooj liab (CUPRUM) yog lub caij hlau, kuj yog kev hloov cov khoom siv CU, lus Askiv tooj liab yog xim av thaum txiav thiab cov xim liab liab nyob rau hauv nws daim ntawv theem pib. Ductility, siab hluav taws xob thiab hluav taws xob conductivity, yog li cov cable thiab cov khoom siv hluav taws xob yog cov siv hluav taws xob feem ntau, tuaj yeem tsim cov ntaub ntawv hauv tsev, tuaj yeem tsim tau ntau yam ntawm cov alloys. Cov roj cig liab alloys muaj cov tshuab ua haujlwm zoo heev thiab hluav taws xob resisticity, uas tseem ceeb tshaj plaws yog tooj dag thiab tooj dag. Tooj liab kuj yog ib tus neeg ruaj khov uas tuaj yeem siv tau ntau zaus yam tsis ua rau nws cov khoom siv tshuab.

Divalent salts salts, cov tub ceev xwm uas nquag tshaj plaws, feem ntau xiav nyob rau hauv lawv cov dej hiav txwv ions thiab ntsuab hauv lawv cov tshuaj chlorine neeb. Lawv yog cov xim ntawm cov xim rau cov zaub mov xws li azurite thiab turquoise thiab muaj keeb kwm tau siv dav ua pigments. Cov qauv ntawm tooj liab lub tsev tsim tawm Verdigris (yooj yim tooj liab Carbonate). Hniav kev kos duab tsuas yog siv tooj liab thiab tooj liab - muaj pigments.

Tooj liab yog ib qho ntawm cov coals uas siv ntxov tshaj plaws uas siv los ntawm tus txiv neej. Thaum ntxov li cas prehistoric lub sij hawm, cov tib neeg pib qhib - Pit Tooj thiab siv nws los ua riam phom, cov cuab yeej thiab lwm yam tais diav. Kev siv tooj liab tau muaj qhov cuam tshuam zoo heev rau kev nce qib ntawm tib neeg kev vam meej. Tooj liab yog tus hlau pom hauv lub ntiaj teb crust thiab dej hiav txwv. Cov ntsiab lus tooj liab hauv lub ntiaj teb crust yog kwv yees li 0.01%, thiab hauv cov neeg tooj liab nyiaj, cov ntsiab lus tooj liab tuaj yeem ncav cuag 3% ~ 5%. Feem ntau ntawm tus tooj liab nyob rau hauv qhov pom nyob rau hauv tebchaw no hu ua tooj liab ees.

Cov kev ua ntawm tooj liab tsis muaj zog, thiab cov tshuaj tiv thaiv ntawm cov hlau thiab tooj liab sulfate tuaj yeem hloov tooj liab. Tooj liab yog insoluble nyob rau hauv notoxidizing acids.