Chemical & Biological Dynamics

pH is the hydrogen ion concentration present in a given solution. A low pH value denotes acidity, whereas a high pH value indicates alkalinity.

Oxidizing and reducing agents are key terms used in describing the reactants in redox reactions that transfer electrons between reactants to form products. This page discusses what defines an …

Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in the same column (group) have similar properties.

Radioactive decay is the emission of energy in the form of ionizing radiation. Example decay chains illustrate how radioactive atoms can go through many transformations as they become stable and no longer radioactive.

EWG's Guide to Healthy Cleaning is a free, searchable online tool providing consumers with safety ratings for common household cleaners.

Your description

bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution

Listing of current Animal Food GRAS notices including notifier, substance, intended use, intended species, and FDA’s response.

EPA search for list of disinfectants

How do I find out if a drug is approved? Is there a Web site I can go to?

National Drug Code Directory Overview

Web page listings EPA's registered antimicrobial products effective against certain blood borne/body fluid pathogens and products classified as sterilizers. Includes list of official EPA Lists.

List that can be searched

National Sanitation Foundation International (NSF) database of registered products. NSF independently tests, audits, certifies, trains and consults for the food, water, health science, sustainability and consumer product sectors.

"Both CI02 and CI02- are readily decomposed by sunlight and fluorescent lights. This can lead to significant losses during water treatment. The characteristics of the water play an important role in the nature of products resulting from light-initiated reactions. Significant levels of CIO)-, BrOf, and bromo-form can be produced. The bromide ion was found to play a particularly important role in THM formation and initiating light reactions that accellerated the decomposition of ClO2 in the dark."