inherent viscosity 

of a polymer
Synonym: logarithmic viscosity number
https://doi.org/10.1351/goldbook.I03033
The ratio of the natural logarithm of the relative viscosity, ηr, to the mass concentration of the polymer, c, i.e. ηinh≡ηln=ln⁡ηrc The quantity ηln, with which the inherent viscosity is synonymous, is the logarithmic viscosity number.
Notes:
  1. The unit must be specified; cm3 g−1 is recommended.
  2. These quantities are neither viscosities nor pure numbers. The terms are to be looked on as traditional names. Any replacement by consistent terminology would produce unnecessary confusion in the polymer literature.
Source:
Purple Book, 1st ed., p. 63 [Terms] [Book]
Citation: 'inherent viscosity' 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.I03033 RIS BibTex EndNote
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Last revised: February 24, 2014