  We report the melting temperature of free-standing silicene by carrying out
molecular dynamics (MD) simulation experiments using optimzed Stillinger-Weber
(SW) potential by Zhang {\it et al.}. The melting scenario of a free-standing
silicene is well captured visually in our MD simulations. The data are
systematically analyzed using a few qualitatively different indicators,
including caloric curve, radial distribution function and a numerical indicator
known as `global similarity index'. The optimized SW potential consistently
yield a melting temperature of 1500~K for the simulated free-standing, infinite
silicene.
