substitution reaction

(redirected from Chemical substitution)
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Related to Chemical substitution: addition reaction
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substitution reaction

n (Chem) → reazione f di sostituzione
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It is well known from the experimental data that chemical substitution, for instance methylation in the PAHs can drastically affect their carcinogenic activity [15] depending on the site of substitution and the number of substituent's.
The basis of any chemical substitution reaction is the destruction of the initial atomic linkage and formation of new atomic linkage, which results in new substance, i.
The Director of a new Office of Chemical Facility Security could, under certain conditions, require a facility to implement methods intended to reduce the consequences of a terrorist attack, or mitigate their outcomes, such as a process modification or chemical substitution.
The chemical substitution [of a gallium atom for an aluminum atom] has been studied by Sandia's collaborators at the University of California at Davis, but nobody has ever put this knowledge to use in an application such as removing water contaminants like microorganisms," said Nyman.
This is achieved by chemical substitution of these molecules onto a titanium alkoxide precursor.
While the chemicals that can be used to modify starch have not changed for several years, processes have constantly been optimized to provide a better level of chemical substitution of the starch granule, when chemical groups are added to the various reactive sites on the starch structure.
This chemical substitution leads to the synthesis of an abnormal enzyme that fails to break down the key fat in body tissues.

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