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Class-4-Dangerous-When-Wet

Published by California Department of Toxic Substances Control | State of California | Metadata Last Checked: July 09, 2025 | Last Modified: 2020-02-06T17:07:19.000Z
<b>Hazard Class 4</b>: 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.

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