Median Lethal Dose (LD50) 5
Median Lethal Dose (LD50) 5 : Statistically derived single dose of a chemical that can be expected to cause death in 50% of a given population of organisms under a defined set of experimental conditions. This figure has often been used to classify and compare toxicity among chemicals but its value for this purpose is doubtful. A commonly used classification of this kind is as follows: Category LD50 Orally to Rat (mg/kg body weight): Very toxic (Less than 25); Toxic (More than 25 to 200); Harmful (More than 200 to 2000)
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