Chemical Structure / July 19, 2018 / Reina Huffman
Sodium bisulfate is used primarily to lower pH. For technical-grade applications, it is used in metal finishing, cleaning products, and to lower the pH of water for effective chlorination in swimming pools and hot tubs. Sodium bisulfate is also AAFCO approved as a general-use feed additive, including companion animal food. It is used as a urine acidifier to reduce urinary stones in cats.
Benzylamine reacts with acetyl chloride to form N-benzylacetamide, an exemplar of the Schotten–Baumann reaction first described in the 1880s. The reaction takes place in a two-phase solvent system (here water and diethyl ether) so that the hydrogen chloride by-product is sequestered in the aqueous phase (and sometimes neutralised with a dissolved base) and thus prevented from protonating the amine and impeding the progress of the reaction. These conditions are often called Schotten-Baumann reaction conditions and are applicable more generally. This particular example is useful as a model for the mechanism of interfacial polymerisation of a diamine with a diacid chloride.
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