amphoteric


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amphoteric

 [am″fo-ter´ik]
capable of acting as both an acid and a base; capable of neutralizing either bases or acids.

am·pho·ter·ic

(am'fō-tār'ik),
Having two opposite characteristics, especially having the capacity of reacting as either an acid or a base; for example, Al(OH)3 Ξ H3AlO3 or an amino acid.
[G. amphoteroi (pl.), both, fr. amphō, both]

am·pho·ter·ic

(am-fŏ-ter'ik)
Having two opposite characteristics, especially having the capacity of reacting as either an acid or a base.
[G. amphoteroi (pl.), both, fr. amphō, both]

amphoteric

(of chemicals) capable of acting either as bases or acids. Amino acids and some metal oxides (such as zinc) are amphoteric. The amphoteric nature of amino acids is important to the structure and function of proteins which are made from them. In addition, it affects the separation of amino acids by ELECTROPHORESIS.
References in periodicals archive ?
The theoretical model for the specific adsorption or chemisorption type reaction between transitional metals and amphoteric oxides, described by equation (2), suggests the production of [H.sub.3][O.sup.+] ions during the adsorption reaction.
Based on this, we have synthesized a new amphoteric Gemini surfactants, and this synthesis method was very simple operation, mild reaction conditions, easy to control and no stringent requirements on the equipment.
To find out the effects of amphoteric structure in PADA flocculation, its flocculation characteristics and flocculation process was studied based on the contrastive analysis of polymer morphology, charge effects and floe characterization with control samples.
Since the amphoteric recombination model is not very well known to many readers, the main formulation aspects detailed in 8] are repeated in the appendix for convenience.
This ratio determines the amount of the basic and amphoteric oxides in relation to the acid oxides and enables the formation of free oxygen ions or prevents this formation.
Product: Chemguard S-111 Amphoteric Fluorosurfactant
Lunenburg's team was sponsored by Tim and Sheila Richards of the Orchard Hills Athletic Club and spelled abysmal, acacia, academia, academic, accelerate, accessible, acumen, adagio, adenoidal, amphoteric, and callisaurus correctly until bumping up against chelate.
The European Commission also concluded that the proposed transaction would not lead to competition concerns since there are only limited overlaps between the two companies' activities on the EEA markets for anionic and amphoteric surfactants (used for the treatment of textiles).
The best opportunities will be found in amphoteric and anionic specialty surfactants due primarily to rising use in the personal care industry.
In most cases, wet end starches are cationic or amphoteric, whereas surface starches are oxidized or hydroxyethyalted.
Chaste tree berry is primarily used for the unpleasant consequences of menses and menopause (premenstrual syndrome and heavy flows) due to its amphoteric or balancing quality.
They were supported by Liverpool bands Tokyo Adventures, Amphoteric and The Garys.