chain-transfer constant

symbol: $C_{\rm{tr}}$
https://doi.org/10.1351/goldbook.15389
In a homopolymerization, rate constant for chain transfer, \(k_{\rm{tr}}\), divided by the rate constant for chain propagation, \(k_{\rm{p}}\), i.e., \(C_{\rm{tr}} = k_{\rm{tr}}/k_{\rm{p}}\).
Source:
PAC, 2008, 80, 2163. (Glossary of terms related to kinetics, thermodynamics, and mechanisms of polymerization (IUPAC Recommendations 2008)) on page 2171 [Terms] [Paper]