Barium orthotitanate is heating pellets of Ba(OH) and TiO. Additionally, there are polymer precursor, sol-gel and reverse micellar routes to BaTiO synthesis. BaTiO has also been successfully grown as a thin film with chemical vapor deposition. Barium orthotitanate can remove up to 99.9% of from a high-temperature gas stream by the reaction: Barium orthotitanate Barium orthotitanate is the inorganic compound with the chemical formula BaTiO. It is a colourless solid that is of interest because of its relationship to barium titanate, a useful electroceramic. The solid has two known phases: a low-temperature (β) phase with "P"2/"n" symmetry and a high-temperature (α′) phase
Pewter known as "trifling metal" or "trifle", was used for holloware and is made up of fine metal with approximately 4% lead. The last type of pewter, known as "lay" or "ley" metal, was used for items that were not in contact with food or drink. It consisted of tin with 15% lead. These three alloys were used with little variation until the 20th century. Older pewters with higher lead content are heavier, tarnish faster, and oxidation gives them a darker silver-gray color. Pewters containing lead are no longer used in items that will come in contact with the human body