Scaling factors are temperature-dependent quantities, and increase with decreasing temperatures, so the timescales reported herein represent lower bounds on experimental timescales. However, determining scaling factors for SDK PE chains at low temperatures, such as 270 K, is challenging as it requires accurate diffusion coefficient estimates for metastable PE melts. Preliminary results indicate that dynamic scaling factors for SDK PE chains may not be as sensitive to temperature as other models (e.g., see ref. 34). For example, a simulation of a dodecane melt at 278.72 K and 1 atm using the SDK model yielded a scaling factor of ∼3.2-3.4 when comparing the long-time centerof-mass diffusion coefficient from the simulation to experimental diffusion coefficients, such as those of Harris et al. and Holz et al. at 278.72 K and 278.15 K, respectively. Moreover, work with the SDK model on lipid bilayers at 310 K and 0.1 MPa suggests scaling factors in the range of 4-7 for lipid systems. Therefore, the 4.07 scaling factor used in this study is reasonable even for this study's nucleation simulations. containing 400 SDK dodecane chains was prepared and heated from 10 K to 278.72 K over the course of 2 million time steps under isochoric conditions. The system was then pressurized and equilibrated for an additional 10 million time steps under NPT conditions with a barostat set point of 1 atm. A production NPT simulation was then performed at 278.72 K and 1 atm for 40 million time steps; this simulation was used to probe the diffusive behavior of SDK dodecane chains.