Atomic and nuclear properties of materials:
Ethyl cellulose (C₁₂H₂₂O5)_n

Quantity	Value	Units	Value	Units
<Z/A>	0.54405
Specific gravity	1.13	g cm-3
Minimum ionization	1.954	MeV g-1cm2	2.209	MeV cm-1
Nuclear collision length	57.9	g cm-2	51.21	cm
Nuclear interaction length	82.3	g cm-2	72.82	cm
Radiation length	40.62	g cm-2	35.94	cm
Critical energy	86.88	MeV (for e-)	84.57	MeV (for e+)
Molière radius	9.91	g cm-2	8.773	cm
Plasma energy	22.59	eV
Muon critical energy	1119.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac*
H	1	22.00	0.090027
C	6	12.00	0.585182
O	8	5.00	0.324791
* calculated from mass fraction data.

Explanation of some entries
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