Synonym for mercuric chloride ... <chemical> Mercury chloride (hgcl2). A highly toxic compound that volatises slightly at ordinary temperature and appreciably at 100 degrees c. It is corrosive to mucous membranes and used as a topical antiseptic and disinfectant. ... Pharmacological action: anti-infective agents, local, disinfectants. ... Che... Found on http://www.encyclo.co.uk/local/20973