Bases amphoteric

CHEMICAL PROPERTIES OF AMINO ACIDS ACID-BASE (AMPHOTERIC) PROPERTIES... [Pg.478]

Information on chemical structure, molecular weight, nature of the drug substance (acid, base, amphoteric, or neutral), and dissociation constants (pKa(s))... [Pg.562]

Basolo, F. Theories of Acids, Bases, Amphoteric Hydroxides, and Basic Salts as Applied to the Chemistry of Complex Compounds, in Bailar and Busch s Chemistry of Coordination Compounds, 416-447, Reinhold Publishing Co., New York (1956). [Pg.95]

The first chapter of the book deals with enzyme-like eatalysis by synthetic polymers - catalysis by polymeric acids and bases, amphoteric polyelectrolytes and nonionic polymers. Because coordination compounds of metal ions with macromolecular ligands are interesting with regard to bioinorganic chemistry, this book elucidates some problems involving the catalysis by water-soluble polymer-metal complexes. Ester hydrolysis, hydrogen peroxide decomposition, oxidation of disubstituted phenols, hydroquinones, mercaptoalcohols and other types of reaction are chosen as model processes. A section devoted to interfacial catalysis is also included. [Pg.157]

The temperature dependence of the swelling ratios of two N-isopropylacryla-mide (NIPA) based amphoteric gels was measured because the NIPA gel itself... [Pg.181]

The structures of the acetate- and propionate-based amphoterics are illustrated in Figure 11.3. [Pg.290]

Amidoamine-based amphoterics made with excess volatile amine require stripping, recovery, recycling or disposal of impure distillate streams, and process control to ensure very low levels of residual volatile amine in the intermediate. [Pg.16]

Feiruti P, Franchini J, Bencini M, Ranucci E, Zara GP, Serpe L, Primo L, Cavalli R (2007) Prevailingly cationic agmatine-based amphoteric polyamidoamine as a nontoxic, nonhemolytic, and stealthlike DNA complexing agent and transfection promoter. Biomacromolecules 8 1498-1504... [Pg.196]

TABLE 4 Amino Acid-Based Amphoteric Surfactants on the Market... [Pg.277]

The prefix"amphi" means of both kinds. Amphiprotism refers to the ability to donate or accept a proton In different reactions. In doing so, the compound acts as either an acid ora base."Amphoterism"is a more general term (see Section 10-6). [Pg.354]

Potentiometric acid-base titration. With reservations about the effects of other weak acids and bases, amphoterics can be determined in any mixture with quats by potentiometric acid-base titration in ethanol or propan-2-ol. WW amphoterics consume two mols of acid or base per mol. WS and SW amphoterics consume one mol per mol. Mixtures can be... [Pg.201]

Aluminium oxide is amphoteric since it reacts with both acids and bases. Amphoteric oxides are likely to be formed by metals near the division between metals and non-metals. [Pg.109]

Figure 4.16 Summary of add-base-amphoteric solubility and extraction characteristics. Neutral molecules (not shown) are soluble in organic solvents according to like-dissolves-like (LdL) characteristics. The solubility curves depict trends in water solubility as a furx -tion of pH for the three different categories. In the ionic form (A or BH ), drug molecules are water soluble. [Pg.107]

Acting as either an acid or base Amphoteric (Pater... [Pg.153]

In pure water, the [H3O ] equals 1.0 x 10 , based on the water dissociation constant, (see Acting as either eui acid or a base Amphoteric water, earlier in this chapter. Using this mathematical relationship, you can calculate the pH ol pure water ... [Pg.157]

Amino-acid-based amphoteric surfactants containing a hydroxyl group have been obtained by reacting an amino acid with a perfluoroalkylated epoxide [197] ... [Pg.60]

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