chemical action


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Related to chemical action: chemical reaction

chemical action

any process in which elements and/or compounds react with each other to produce a chemical change: For example, hydrogen and oxygen combine to produce water.
References in periodicals archive ?
Barbara Cummings, manager of product safety, Product Safety & Regulatory Affairs, Bayer MaterialScience LLC, presented “A Review of the Elements of the EPA's Chemical Action Plan on MDI and TDI Containing Products,” at 3:30 p.
A device "does not achieve its primary intended purposes through chemical action within or on the body" and "is not dependent upon being metabolized for the achievement of its primary intended purposes.
The specific chemical action of each admixture have been evaluated by analysing the variation of the coefficient of activity K according to the rate of the cement substitution, by applying to the studied mortars the concept of the equivalent binder and by deducing the coefficient of activity K from the predictive model of Feret.
The darker color of the maria may be produced by chemical action or X-rays; recently eroded parts of the crater wall and mountainous regions would show the light shade of the moon's underlying material.
The rule (Washington Department of Ecology, 2006) comprises criteria for persistence, bioaccumulation, and toxicity, an initial list of PBTSs based on the criteria, a procedure for updating the list, criteria for selecting PBTSs for which chemical action plans will be prepared, and guidance on the scope of chemical action plans.
The House of Delegates just passed a Chemical Action and Right to Know resolution.
The leeches were approved as a medical device because the agency determined that the blood sucking aquatic animals met the definition of a medical device under the Federal Food, Drug and Cosmetic Act, which is "an article intended to diagnose, cure, treat, prevent, or mitigate a disease or condition, or to affect a function or structure of the body, that does not achieve its primary effect through a chemical action and is not metabolized.
The leeches were approved as a medical device because they met the definition of a medical device under the Federal Food, Drug, and Cosmetic Act, which is "an article intended to diagnose, cure, treat, prevent, or mitigate a disease or condition, or to affect a function or structure of the body, that does not achieve its primary effect through a chemical action and is not metabolized.
Water poured into the top of the filter passes through a tray that contains a few kilograms of iron nails--whose chemical action scours the arsenic from the fluid--and then collects in a sand-filled bottom compartment.
This led to much controversy between Louis Pasteur, who believed that fermentation was inseparable from living cells, and Justus Freiherr von Liebig, who proposed that these processes were the result of chemical action.

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