Toxicity of Carbon

>>9110060
Probably about as much as it takes to kill someone by eating straight up coal. Which, I don't know if there's any historical data for. I hope not.

a large cylinder of carbon could choke you

>>9110066
Coal is mostly carbon, but also contains significant amounts of sulfur and traces of other, more potent toxins like mercury and arsenic. I assume those would kill you long before pure carbon would.

>>9110060
the atom itself obviously doesn't have adverse effects, but when built up into structures like nanotubes or graphene, it tends to cause a lot of damage to cells.

>>9110060
Carbon has virtually no toxicity, death from ingesting too much carbon would occur from it blocking up your innards, not from any innate toxicity.