Nano tungsten trioxide should be sealed and stored in a cool, ventilated warehouse. Keep away from fire and heat sources. Keep out of direct sunlight. And pay attention to store it separately from bromine pentafluoride and chlorine trifluoride; and the storage area should be equipped with suitable materials to contain the leakage. In case of leakage, the following measures should be taken to actively respond:
Emergency treatment: isolate the leaked contaminated area and restrict access. The entrants should wear dust masks and work clothes for general work. Do not come into direct contact with spilled material.
A small amount of leakage: Avoid raising dust, sweep up carefully, and collect in a dry, clean container with a cover.
Large amount of leakage: collect and recycle or transport to waste disposal site for disposal.
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