anion

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Related to anionic: anionic detergent, cationic, nonionic, anionic polymerization

anion

(ăn`ī'ən), atom or group of atoms carrying a negative charge. The charge results because there are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction (see oxidation and reductionoxidation and reduction,
complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation
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) or from neutral acids (see acids and basesacids and bases,
two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Properties
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) or polar compounds by ionization. Anionic species include Cl, SO4−−, and CH3COO. Highly colored intermediates in organic reactions are often radical anions (anions containing an unpaired electron). Saltssalt,
chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases). Characteristics and Classification of Salts

The most familiar salt is sodium chloride, the principal component of common table salt.
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 are made up of anions and cationscation
, atom or group of atoms carrying a positive charge. The charge results because there are more protons than electrons in the cation. Cations can be formed from a metal by oxidation (see oxidation and reduction), from a neutral base (see acids and bases) by protonation, or
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. See ionion,
atom or group of atoms having a net electric charge. Positive and Negative Electric Charges

A neutral atom or group of atoms becomes an ion by gaining or losing one or more electrons or protons.
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.

anion

[′a‚nī·ən]
(chemistry)
An ion that is negatively charged.

anion

a negatively charged ion; an ion that is attracted to the anode during electrolysis
References in periodicals archive ?
com), Analysis of the Anionic Surfactant Market for Home and Personal Care Products and its Importance to FMCG Manufacturers , finds that the market generated revenues of $137.
Market Dynamics II-1 Market Overview II-1 Current and Future Analysis II-1 Trends II-1 Anionic Surfactants Remain the Largest Product Segment II-1 Consumer Preference for Mild Products Triggers Demand for Amphoteric Surfactants II-1 Trend Towards "Earth-Friendly" Formulations II-2 Consolidation Trends Lead to Concentrated Market Structure II-2 Select M&A Activity in the Surfactant Marketplace: 2000-2008 II-2
com) finds that the European Anionic Surfactants Market earned revenues of EUR1234.
The barrier for the producer was that its existing silica-based program--using an anionic flocculent, borosilicate, and alum--could not provide consistent ash retention beyond 22% sheet ash.
Typical commercial anionic and cationic resins Cable and accessories for normal operations
This study reports efforts to develop new technologies for PET polyester anionic resin and rosin to be used in neutral alkaline papermaking conditions and associated technologies.
Silsoft Style silicone is an anionic film forming emulsion of silica-crosslinked polydimethylsiloxane blended with trisiloxane.
Providing cationic and anionic polyelectrolyte powder.
The anionic surfactants segment dominated the global market, in terms of volume around 7,500 KT in 2014, followed by the non-anionic surfactants, the volume of which was recorded at 6,400 KT.
Scope of the Report By Product Type: - Anionic Surfactants - Non-Anionic Surfactants - Cationic Surfactants - Amphoteric Surfactants By Application: - Soap Industry - Personal Care Industry - Textile Industry - Industry and Institutional Cleaning - Elastomers and plastics Industry - Oilfield Chemicals - Crop Protection - Food Industry - Others By Substrate Type: - Synthetic Surfactants - Bio-based surfactants Key Topics Covered: Introduction 2 Research Methodology 3 Executive Summary 4 Premium Insights 5 Market Overview 6 Industry Trends 7 Surfactants Market, By Product Type 8 Surfactants Market, By Substrate Type 9 Surfactants Market, By Application 10 Surfactants Market, Regional Analysis 11 Competitive Landscape 12 Company Profiles - Air Products and Chemicals, Inc - Akzonobel N.
8,992,632 B2; Method has patented a cleaning composition that is comprised of surfactant system that contains a nonionic surfactant including an ethoxylated alcohol and/or an ethoxylated fatty acid ester, and an anionic surfactant; free water; and a solvent system comprising a polyalcohol.