amphoteric


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am·pho·ter·ic

 (ăm′fə-tĕr′ĭk)
adj.
Having the characteristics of an acid and a base and capable of reacting chemically either as an acid or a base.

[From Greek amphoteros, each of two, from amphō, both.]

amphoteric

(ˌæmfəˈtɛrɪk)
adj
(Chemistry) chem able to function as either a base or an acid. Also: amphiprotic
[C19: from Greek amphoteros each of two (from amphō both) + -ic]

am•pho•ter•ic

(ˌæm fəˈtɛr ɪk)

adj.
capable of functioning either as an acid or as a base.
[1840–50; < Greek amphóter(os) either (comp. of ámphō both; c. Latin ambō) + -ic]

am·pho·ter·ic

(ăm′fə-tĕr′ĭk)
Capable of reacting chemically as either an acid or a base. Water, ammonia, and the hydroxides of certain metals are amphoteric.

amphoteric

Describes a substance which exhibits properties of both an acid and a base.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.amphoteric - having characteristics of both an acid and a base and capable of reacting as eitheramphoteric - having characteristics of both an acid and a base and capable of reacting as either
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
acidic - being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7)
alkalic, alkaline - relating to or containing an alkali; having a pH greater than 7; "alkaline soils derived from chalk or limestone"
Translations

amphoteric

[ˌæmfəˈtɛrɪk] adj (Chem) → anfotero/a
References in periodicals archive ?
Amphoteric oxides have surface charges that are pH dependent; they react in alkaline or acid medium to create negative or positive charges which are responsible for the cation or anion adsorption reactions.
By type, the global surfactants market is classified into cationic surfactant, anionic surfactant, nonionic surfactant, amphoteric surfactant and others.
Attributes/comments: Surflon S-232 is an amphoteric fluorosurfactant used in water-based paint, emulsion penetrant, cleaners and waxes applications.
for this lot, these services include: the provision of washing and rinsing solutions for the treatment of ocular or cutaneous lesions caused by splashes of acidic or basic chemicals, based on "amphoteric chelator", diphoterin type or equivalent, - the solutions provided must allow the capture of aggressive molecules, be effective against pain and promote healing, - the provision of devices against thermal burns, - training in the use of products.
Summary: A novel flexible linking group based on amphoteric Gemini surfactant sodium 2, 2'- ((oxybis (ethane-2,1-diyl)) bis (p-tolylazanediyl)) diethanesulfonate(TCDSQ-22) as corrosion inhibitor was successfully synthesized on the surface of stainless steel.
[11,12] demonstrated that [Al.sub.2][O.sub.3] exhibited an amphoteric character in the CaO-Si[O.sub.2]-[Al.sub.2][O.sub.3]-MgO slag system.
The claims for the plant are wide: it is a stimulating expectorant, antispasmodic, sedative, amphoteric, vulnerary, diuretic and a stomach and liver tonic.
The concept of amphoteric sludge flocculants has been brought up after further understanding of sludge flocculation [4, 13, 14].
Marina Biotech, a nucleic acid-based drug discovery and development company focused on rare diseases, has received a notice of allowance from the European Patent Office of the intent to grant the claims in EP 07856910.0, which broadly includes SMARTICLES amphoteric liposomes made with a wide range of novel sterol amphiphiles, it was reported on Thurs day.
The report provides detailed account of key oil filed surfactant types such as anionic, non-anionic, cationic, amphoteric, and others depending on their dissociation in water.
Defects at the Si/Si[O.sub.2] interface, however, have been identified by Electron Paramagnetic and Electron Spin Resonance (EPR, ESR) as dangling bonds, referred to as Pb centers, precisely located at the Si/Si[O.sub.2] interface [2-4], and ascertained to be amphoteric [3-6].