100% oxygen can cause blindness and damage to organs
At what pressure?
Gas doesn't really give a damn about purity. What matters is the partial pressure of it.
For example, one key part of oxygen toxicity is it absorbing into you, with that being an equilibrium based upon the partial pressure of O2.
The purity of the gas doesn't matter, what does is the partial pressure of O2 in that gas.
Like these morons
https://www.uhms.org/images/Safety-Articles/hyperbaric_and_hypobaric_cha.pdf
Using high pressure oxygen. Do you have an example with low pressure oxygen?
serious
you would die.
the ship would explode.
no?
No.
Gas does not give a damn about the purity.
What it cares about is the pressure.
Oxygen at 1 atm, regardless of if it is pure oxygen at 1 atm, or if it was 20 % oxygen in a mixture of gas which had a total pressure of 5 atm, would have the same issues, with lots of things not flammable at 0.21 atm oxygen being flammable.
Conversely pure oxygen at 0.21 atm, would only have the same flammability issues as normal air.
The main location for an issue with the oxygen would be the oxygen tanks, which have oxygen at a high pressure (or liquid oxygen), making it much more likely to burn there. (Look at Apollo 13 for an example of that).