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Cyclic amines, titration

Carboxylic and sulfonic acid groups import acidity to organic compounds. Most carboxylic acids and sulfuric acids are readily dissolved in water, and their titration with a base is straightforward. If solubility in water is not sufficient, the acid can be dissolved in ethanol and titrated with aqueous base. Aliphatic amines and many saturated cyclic amines can be titrated directly with a solution of a strong acid. Esters are determined by saponification with a measured quantity of standard base. The excess base is titrated with standard acid. [Pg.3756]

Aliphatic amines generally have base dissociation constants on the order of 10 and can thus be titrated directly with a solution of a strong acid. In contrast, aromatic amines such as aniline and its derivatives are usually too weak for titration in aqueous medium ( Ib 10 °). The same is true for cyclic amines with aromatic character, such as pyridine and its derivatives. Many saturated cyclic amines, such as piperidine, tend to resemble aliphatic amines in their acid/base behavior and thus can be titrated in aqueous media. [Pg.441]

The piperazine capped disiloxane as discussed in 6 above could easily be equilibrated under exactly identical conditions to those discussed for the primary amine system earlier, that is, the disiloxane, cyclic tetramer, and 0.5 weight percent of the siloxanolate catalyst were heated to 80°C for 44 hours. The work-up procedure was identical, that is, the catalyst was deactivated at 150°C for 3 hours. The excess cyclics were then stripped under vacuum (0.5 torr, lOO C) and the material was further characterized by amine endgroup titration. [Pg.27]

However, in an attempt to gain further insight on these processes, we proceeded with the thermodynamics associated with the interactions of the cyclic tetramer and amines in benzonitrile and in nitrobenzene at the standard temperature. For these purposes, titration microcalorimetiy was the technique used since inconsistent data were obtained by the use of classical macrocalorimetry mainly due... [Pg.382]


See other pages where Cyclic amines, titration is mentioned: [Pg.153]    [Pg.228]    [Pg.180]    [Pg.233]    [Pg.235]    [Pg.236]    [Pg.231]    [Pg.78]    [Pg.1608]   
See also in sourсe #XX -- [ Pg.3756 ]




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Cyclic aminals

Cyclic amines

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