Oxidizer

There are many oxidizers which can cause hazards.

Example:

On 26th July 2007 an explosion ocurred at the Scaled Compostes facility at Mojave Airport in California involving Nitrous Oxide

References

Hazards
Physiological/Psychological/Human Factors  Zero or Low Gravity  Physical Environments  Medical Treatment  Fire/Explosion  Toxins  Corrosives  Temperature Extremes  Non-Ionizing Radiation  Ionizing Radiation  Lack of Breathable Atmosphere  Inadequate Food/Water  Improper Pressure