In Fremys process for separating osmium from the residues of platinum ore, ruthenium occurs in a dioxide.
By this method a dilute solution of the dioxide in water is obtained.
dioxide, dī-oks′īd, n. an oxide containing two equivalents of oxygen to one of a metal.
It is a bluish-black powder which at high temperatures decomposes into the metal, dioxide and oxygen.
The dioxide is used in incandescent gas mantles (see Lighting).
Under the conditions of the assay the dioxide cannot be weighed, as it partly dissolves on breaking the current.
It is decomposed by acids into a mixture of lead monoxide and dioxide, and may thus be regarded as lead metaplumbate, PbPbO3.
Lead when present is precipitated on the spiral in the form of a dark powder of dioxide (PbO2).
The dioxide has acid properties, and combines with lime and other bases forming a series of salts called carbonates.
If the percentage of dioxide is required it may be calculated by multiplying the percentage of manganese by 1.582.
dioxide di·ox·ide (dī-ŏk'sīd)
A compound containing two oxygen atoms per molecule.