Class-4-Spontaneously-Combustible
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<b>Hazard Class 4</b><span style='font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size: 16px;'>: Class 4 hazards are flammable solids. There are three divisions in this class, including flammable solids, spontaneously combustible materials and substances that are dangerous when wet, or water-reactive.</span>
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