Atomic and nuclear properties of materials:
UNCONFIRMED Element 113
Status of heaviest elements as of January 2013 (pdf)

Quantity	Value	Units
Atomic number	113
Atomic mass	[284.178(6)]	g mole-1
Density	??	g cm-3
Mean excitation energy	1171.0	eV
Minimum ionization	1.091	MeV g-1cm2
Nuclear collision length	124.7	g cm-2
Nuclear interaction length	221.7	g cm-2
Pion collision length	147.3	g cm-2
Pion interaction length	247.6	g cm-2
Radiation length	5.07	g cm-2
Critical energy	5.79	MeV (for e-)
Molière radius	18.55	g cm-2
Plasma energy	67.99	eV
Muon critical energy	112.	GeV

For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PS PDF TEXT
Table of muon dE/dx and Range: PS PDF TEXT
Explanation of some entries
Note: One of the atomic masses reported by the JINR-LLNL group is given.
Note: Density 14.0 g/cm³ and I_eff = 1171 eV assumed in calculating critical energies and dE/dx.