## Wikipedia - Reduced viscosity reduced viscosity

of a polymer
Synonym: viscosity number
https://doi.org/10.1351/goldbook.R05220
The ratio of the @R05283@ to the mass concentration of the polymer, $$c$$, i.e. $$\frac{\eta _{i}}{c}$$, where $$\eta _{i}$$ is the @R05283@.
Notes:
1. The unit must be specified; $$\text{cm}^{3}\ \text{g}^{-1}$$ is recommended.
2. This quantity is neither a @V06627@ 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 @V06627@ number.
Source:
Purple Book, 1st ed., p. 63 [Terms] [Book]