calcium oxide (CaO), a compound formed by the calcination of chalk or marble. It is very caustic when it comes into contact with moist skin and mucous membranes. Also called calx, quicklime.
calcium oxide (CaO)
calcium oxide (CaO), a compound formed by the calcination of chalk or marble. It is very caustic when it comes into contact with moist skin and mucous membranes. Also called calx, quicklime.