The flash point indicates how easy a chemical may ignite and burn
The flash point of a chemical is the lowest temperature where
it will evaporate enough fluid to form a combustible concentration of
gas. The
flash point is an indication of how easy a chemical may burn.
Materials with higher flash points are less flammable or hazardous than chemicals with lower flash points.
An open flame is not always necessary to ignite the gas. A hot surface like a heating element or warm machine will do for chemicals with more than high hazard.
Flash Point is not the same as the Auto-Ignition Temperature. The Auto-Ignition Temperature is the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present.
Materials with higher flash points are less flammable or hazardous than chemicals with lower flash points.
| Hazard | Flash Point |
| Very Low Hazard | Flash point > 200oF (93oC) |
| Moderate Low Hazard | Flash point 150oF to 200oF (66oC to 93oC) |
| High to Moderate Hazard | Flash point 100oF to 150oF (38oC to 66oC) |
| Extreme to High Hazard | Flash point 0oF to 100oF (-18oC to 38oC) |
| Extreme Hazard | Flash point < 0oF (-18oC) |
An open flame is not always necessary to ignite the gas. A hot surface like a heating element or warm machine will do for chemicals with more than high hazard.
Flash Point is not the same as the Auto-Ignition Temperature. The Auto-Ignition Temperature is the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present.
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