Term: (chain) identity period of a polymer
https://doi.org/10.1351/goldbook.I00954

Definition:
The shortest distance along the chain axis for translational repetition of the chain structure. The chain identity period is usually denoted by c. Synonymous with (chain) repeating distance.

Source: Purple Book, 1st ed., p. 77 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: '(chain) identity period of a polymer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.I00954

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