The lighter the oil, the higher its auto-ignition temperature. How can this be explained?
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The lighter the oil, the lower its flash point and ignition point, while its autoignition point is higher. How to explain it?
The lighter the oil, the lower its flash point and ignition point: this is because lighter oils evaporate more easily, and it is only when they vaporize into the air that they can catch fire and burn. Flash point and ignition point are only related to the vaporization properties of the oil. And the auto-ignition temperature is higher. How to explain it? Spontaneous combustion is an oxidation process that occurs within the oil itself; the lighter the oil, the more difficult it is for it to oxidize.