The acid‐binding properties of long‐chain aliphatic amines

Abstract

Long‐chain aliphatic tertiary amines such as methyldioctylamine can be used as anion exchangers. Tertiary amines are much more efficient as acid‐binders than primary or secondary amines. The acid‐binding efficiency of tertiary amines improves as the length of the carbon chain increases. Strong acids are extracted more readily than weak acids and can be removed from mixtures with weak acids. Methyldioctylamine and the anion‐exchange resin De‐acidite C have acid‐binding capacities of the same order. The technique can be used to remove mineral acids from acid hydrolysates of protein, but is not of much value for the extraction or purification of penicillin.