reduced viscosity

of a polymer
Synonym: viscosity number
https://doi.org/10.1351/goldbook.R05220
The ratio of the
relative viscosity increment
to the mass concentration of the polymer, c, i.e. ηic, where ηi is the
relative viscosity increment
.
Notes:
  1. The unit must be specified; cm3 g1 is recommended.
  2. This quantity is neither a
    viscosity
    nor a pure number. The term is to be looked on as a traditional name. Any replacement by consistent terminology would produce unnecessary confusion in the polymer literature. Synonymous with
    viscosity
    number.
Source:
Purple Book, 1st ed., p. 63 [Terms] [Book]