amphoteric


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amphoteric

[¦am·fə¦ter·ik]
(chemistry)
Having both acidic and basic characteristics. Also known as amphiprotic.
References in periodicals archive ?
Adsorption of copper ions takes place on active sites where amphoteric oxides are deprotonated, creating negative charges not only on non-activated but also in activated surface.
Attributes/comments: Surflon S-233 is an amphoteric fluorosurfactant used in floor polish applications.
Taking into account all of the factors mentioned above, the amphoteric copolymer poly (acrylamide-acryloyloxyethyl trimethyl ammonium chloride--2-acrylamido-2-methyl-propane sulfonate) (PADA) has been synthesized in aqueous solution by ternary free radical copolymerization.
The firm has also received a notice of allowance of Canada Patent 2,665,783, which includes processes for making a broad range of amphoteric liposomes, including the SMARTICLES formulation currently in Phase I and Phase II clinical studies.
The amphoteric surfactants are best used for corrosion inhibition and are used in enhanced oil recovery technology such as steam flooding.
In the present work a model for surface recombination via amphoteric dangling bond [P.sub.b] centers at the Si/Si[O.sub.2] interface is developed based on the available model for bulk recombination in a-Si [8].
Non-ionic tensides (alkyl polyglycosides and amphoteric tensides) can be produced from, for example, starch and glucose syrup on the basis of betaines or sultaines.
Vanadium(IV) dioxide (VO2) is a dark blue solid inorganic compound that is considered to be amphoteric. This means that it can react as a base and as an acid.
These include amphoteric compounds (chiefly, cocamidopropyl betaine, plus others in the betaine family, and related compounds), nonionic compounds (such as cocamide diethanolamine, also called cocamide DEA), and hydrophobically modified (HM) polymers.
Newer Surfactants * Amphoteric surfactants (eg, cocamidopropyl betaine) * Nonionic surfactants (eg, cocamide diethanolamine) * Hydrophobically modified polymers