The LD50 is a single dose of a chemical that, when fed to a group of test animals or applied dermally, will kill 50% of the animals.
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The amount of a material, given all at once, which causes the death of 50% (one half) of a group of test animals. The LD50 is one way to measure the short-term poisoning potential (acute toxicity) of a material. The LD50 is defined as the amount of chemical that when ingested, injected, or applied to the skin of a test animal.
02. LC means "lethal concentration."
LC50 is the concentration of the chemical in the air or water that will kill 50% of the test animals with a single exposure.
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LC values usually refer to the concentration of a chemical in air but in environmental studies it can also mean the concentration of a chemical in water. For inhalation experiments, the concentration of the chemical in air that kills 50% of the test animals in a given time (usually four hours) is the LC50 value. For airborne and dissolved in water.
The LD50 (lethal dose) is a single dose of a sample or tested compound that, when given to test animals either orally or dermally, will kill 50% of the animals.While
LC50 (lethal concentration) is the concentration of sample or tested compound in the air or water that kill 50% of the test animals with a single exposure
LD50 (Lethal Dose 50%) is a statistically derived dose at which 50% of the animals will be expected to die. For inhalation toxicity, air concentrations are used for exposure values. Thus, the LC50 (Lethal Concentration 50%) is used. In brief, LD is dose ingested, LC is dose inhaled. 50 means half the test population of experimental animal dies and usually statistically interpolated from results of toxicity exam