Tritiated water
Tritiated water is a radioactive form of water in which the usual protium atoms are replaced with tritium. In its pure form it may be called tritium oxide (TO or HO) or super-heavy water. Pure TO is corrosive due to self-radiolysis. Diluted, tritiated water is mainly HO plus some HTO (HOH). It is also used as a tracer for water transport studies in life-science research. Furthermore, since it naturally occurs in minute quantities, it can be used to determine the age of various water-based liquids, such as vintage wines. The name "super-heavy water