On Mon, Jul 17, 2017 at 04:32:52PM +1200, Rupert Boleyn wrote:
> Thus a DTon (14m^3) of each has a following characteristics:
>          Mass                  Mass of Hydrogen
> Glucose  1.540 x 14 = 21.560   0.0671 x 21.560 = 1.45 tonnes
> Fructose 1.694 x 14 = 23.716   0.0671 x 23.716 = 1.59 tonnes
> Sucrose  1.587 x 14 = 22.218   0.0648 x 22.218 = 1.44 tonnes

Solid methane is pretty decent.  Just more than 25% of its mass is
hydrogen, and it has a density just under 500 kg/m^3 at 70 K, for a
total of 1.75 tonnes hydrogen per dton.  It should also be extremely
common on outer system bodies.  At liquid hydrogen temperatures, its
density is slightly greater at 520 kg/m^3, for a total of 1.83 tonnes
hydrogen per dton.

- Tim