LD50

Amount of a toxic material per unit of body weight of test animals that kills half the test population in a certain time

• risk assessment
• risk management
• LD50
• LD60

Which compound is the most toxic based on their LD50s?

• Ethanol: 7,600mg/kg

• Caffeine: 192mg/kg

• NaCl: 3000mg/kg

• NaCN: 6.4mg/kg

The LD50 for mice is calculated at 5mg/kg for a chemical. What would the LD50 for people be?

• 5mg/kg

• 50mg/kg

• 15mg/kg

• You can't use mouse data for people.

The LD50 for arsenic is 14mg/kg. If Ms. Bliss weighs 120kg, how much arsenic would she need to ingest for it to be toxic?

• 8.5mg

• 168mg

• 1,680mg

• 85mg

Ethanol has an LD₅₀ of 7,060mg/kg. What would be the lethal dosage for an individual who weighs 30kg?

• 211,800mg

• 15,758mg

• 235.3mg

• 7060mg