(redirected from Dimethyl mercury)
Also found in: Medical.


(Chemistry) any of various highly toxic organic compounds of mercury that contain the complex CH3Hg-
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌmɛθ əlˈmɜr kyə ri)

any of several extremely toxic organometallic compounds, Hg(CH3)2, formed from metallic mercury by the action of microorganisms and capable of entering the food chain: used as seed disinfectants.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Renowned research chemist Karen Wetterhahn was working with dimethyl mercury in her lab at Dartmouth College, when she spilled a drop of the toxic compound on her glove.
The dimethyl mercury compared to methyl mercury occurs in very low concentration.
The various chemical forms of mercury can be divided into three primary categories: 1) metallic mercury (also called liquid or elemental mercury); 2) inorganic mercury, including common compounds formed from the monovalent and divalent cations (e.g., mercurous chloride, mercuric chloride, mercuric acetate, and mercuric sulfide); and 3) alkyl, dialkyl, and aryl organic mercury compounds (e.g., methylmercuric chloride, dimethyl mercury, and phenylmercuric acetate, respectively) (Agency for Toxic Substances and Disease Registry [ATSDR], 1999; Clarkson, 2002).
Second, immediate symptoms of certain chemical exposures might be nonexistent or mild despite the risk for long-term effects (e.g., neurocognitive impairment from dimethyl mercury, teratogenicity from isotretinoin, or cancer from aflatoxin).