The Effect of Sulphuric Acid on Wool

Abstract
The stability of serine sulphate to hydrolysis with various reagents has been investigated. This ester group is stable to mild hydrolytie treatments both in the free amino acid and in wool protein. Faulty areas in laboratory carbonised and in commercially carbonised wool have been shown to contain a higher concentration of these groups than the surrounding areas, and the groups are apparently responsible for the resistance to acid dyes. Sulphonated derivatives of the aromatic amino acids have not been detected in any fault, and are not therefore responsible for the characteristic unlevel dyeings.

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