AbstractWhen wool is heated at 205°C. under silicone oil, it becomes progressively more soluble in 88% formic acid. This solubility is due almost exclusively to breakage of disulfide crosslinks. Assuming first‐order crosslink cleavage, and using the methods of the first paper of this series, we establish the presence of two independent components. One component, about 20% of the wool, has a molecular weight of at least 70,000; the other has a molecular weight of at least 33
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