Spontaneously Combustible Materials and Division 4.2
When the oxidation of a sensitive material (e.g., phosphorus) by oxygen in the atmosphere reaches the material’s autoignition temperature.
If oxidation takes place when catalyzed by moisture, as in the case of wet cotton, paper, or sodium.
When autoignition temperatures are reached as a consequence of internal exothermic reactions like the polymerization of some drying oils.
When autoignition temperatures are reached as substances like sewage and compost are decomposed by bacterial action.
KeywordsBlast Wave Fish Meal Spontaneous Combustion Ignition Source Combustible Material
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