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Toxicity depend on the acute amount and rate of exposure, it can't stated exactly how long. For instance, LD50 of Ethylene Glycol (an antifreeze) is 1500 - 4000 mg/kg (Human - Rat) assume a human of 70 kg weight, the lethat dose is then approximately 105 g or around 100 ml. If he drink such potion of ethylene glycol, he might die within hour but if he drink it up at 10 ml dose per hr it must take more than 12 hr to his death while he still have a chance of 50% survival since LD50 measure the death of 50% of population.

It also need to accounted for body capacity to handle the toxic substance. Immunity may varied greatly from person to person. Continuous exposure to dilute toxic may not cause any observable problem if it is within capacity of the body to destroy or excrete out the toxin.

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12y ago

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