# Molecular weights from https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses.
# Density source: NCAT software distribution
# Material composition source: same as density

# Material name:
# NCAT PMMA

# Number of elements:
3

# Density:
1.190000

# Atomic number(s) and corresponding mass fraction(s):
1    0.080000    # hydrogen
6    0.600000    # carbon
8    0.320000    # oxygen
