methyl

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methyl

(mĕth`əl), CH3, organic free radicalfree radical,
in chemistry, a molecule or atom that contains an unpaired electron but is neither positively nor negatively charged. Free radicals are usually highly reactive and unstable. They are produced by homolytic cleavage of a covalent bond (see chemical bond); i.e.
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 or alkyl groupalkyl group
, in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from the name of its alkane by replacing the -ane suffix with -yl, e.g.
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 derived from methanemethane
, CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184°C;, and boils at −161.4°C;. It is combustible and can form explosive mixtures with air.
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 by the removal of one hydrogen atom.

methyl

[′meth·əl]
(organic chemistry)
The alkyl group derived from methane and usually written CH3‒. Also known as carbinyl.

methyl

1. of, consisting of, or containing the monovalent group of atoms CH3
2. an organometallic compound in which methyl groups are bound directly to a metal atom
References in periodicals archive ?
Role of glutathione and hepatic glutathione S-transferase in the biliary excretion of methyl mercury, cadmium and zinc a study with enzyme inducers and glutathione depletors.
However, notes the HEAL study, it is prenatal exposure and maternal mercury levels that are particularly alarming because small amounts of methyl mercury can cause irreversible health effects on a developing brain compared with that of an adult.
The chemical species that matter are various complexes of the mercuric ion with different organic and inorganic legends, methyl mercury, dimethyl mercury and elemental mercury.
As the author suggests, if so-called silver fillings are actually 50 percent mercury, constantly releasing methyl mercury vapor, how could this fact not be problematic for patients' overall health?
Almost all of the dangerous mercury in fish is methyl mercury.
Methyl mercury is a well documented neuro-toxicant, which may in particular cause adverse effects on the developing brain.
They cover models, approaches, and challenges in neurotoxicity research during development; effects of anesthetics and their potential neurotoxicity during development; the developmental basis of adolescent or adult disease; risk assessment of methyl mercury and its effects on neurodevelopment; autism spectrum disorders; and strategies and progress in epilepsy research.
Sources of mercury exposure within the home include elemental mercury spills from old medical thermometers, blood pressure cuffs, thermostats, and fluorescent lights, as well as methyl mercury from ingestion of foods with high concentrations, such as certain types of fish.
Thimerosal contains ethyl mercury, which is different from the methyl mercury that we all remember as the silvery liquid substance found in old thermometers.
Thiomersal contains a different form of mercury, which does not accumulate, and is metabolised and removed from the body much faster than methyl mercury.