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Harmfulness of sulfur dioxide
SO2 is a colorless gas with strong pungent smell, which is easy to dissolve in human blood and other viscous liquids. When the annual sulfate concentration is 10 μ When the concentration is about 10%,
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Medical benefits of nitrous oxide
Nitrous oxide (N2O) is used for anesthesia, which has no irritation to respiratory tract and no damage to the functions of important organs such as heart, lung, liver and kidney. It only takes 30 to 4
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Precautions for ammonia
Ammonia has corrosive and irritating effects on skin tissues in contact, can absorb water in skin tissues, denature tissue proteins, saponify tissue fat, and destroy cell membrane structure. The solub
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