Toxic.
Zinc sulfate heptahydrate is a chemical that is a white crystalline powder in its normal state. It is moderately etc. irritating to the eyes and not irritating to the skin. Misuse can cause nausea and vomiting.
Do not use zinc sulfate heptahydrate in direct contact, and it should be kept in closed operation and local exhaust to prevent the dust from being released into the air of the workshop.
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