Acute toxicity
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Acute toxicity describes the adverse effects resulting from a single exposure to a substance<ref name="msds">The MSDS HyperGlossary: Acute toxicity. Safety Emporium. Retrieved on [[2006-11-15]].</ref>.
Because experimental testing for acute toxicity in humans is considered unethical, animal testing, a review of data on similar substances, inference from chemical properties, in-vitro testing and limit testing on animals are often used to determine acute toxicity levels<ref name="msds">The MSDS HyperGlossary: Acute toxicity. Safety Emporium. Retrieved on [[2006-11-15]].</ref>.
Acute toxicity is different from chronic toxicity, which describes the adverse health effects from repeated exposures, often at lower levels, to a substance over a longer time period (months to years)<ref name="msds">The MSDS HyperGlossary: Acute toxicity. Safety Emporium. Retrieved on [[2006-11-15]].</ref>.
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