Amalgam (dentistry) not form. Early results from the clinical use of this new amalgam showed an improvement in marginal integrity. About 10 years later, another alloy, called Tytin, was introduced by adding significant amount of CuSn together with AgSn, in the form of a unicompositional spherical particle to eliminate the γ phase. Both of these relatively new alloys raised the copper content from 5%, present in the older balanced composition alloy, to about 13% for the newer alloys. Dental amalgam is produced by mixing liquid mercury with an alloy made of silver, tin, and copper solid particles. Small quantities of zinc, mercury
UCPH Department of Chemistry moved several times, usually to better surroundings. In 1962, Universitetets Kemiske Laboratorium moved to its present location in the H.C. Ørsted Institute (HCØ), named after Hans Christian Ørsted who discovered electromagnetism in 1820. It is less well known that H.C. Ørsted was also an able chemist, and that he was in fact the first person to isolate the element aluminium. UCPH Department of Chemistry The Department of Chemistry () is a department under the Faculty of Science, University of Copenhagen. It is the largest basic research institute in chemistry in Denmark, and is responsible for the teaching of chemistry at