How much of the chemical needs to be present before issuing a warning and how do I know if the presence of the chemical has reached that level?
A. For carcinogens, the no significant risk level (NSRL) is the level of exposure that would result in no more than one case of cancer in a 100,000 individuals exposed to the chemical over a 70-year lifetime. For developmental toxins, the level is reached a bit differently. The “no observable effect level” (NOEL) is determined by identifying the level that has been shown to not pose any harm to humans or animals. The NOEL is then divided by 1000 to provide an ample margin of safety. Therefore, businesses must provide a warning if they cause exposures to reproductive toxicant chemicals at a level which exceeds 1/1000th of the NOEL.
A. For carcinogens, the no significant risk level (NSRL) is the level of exposure that would result in no more than one case of cancer in a 100,000 individuals exposed to the chemical over a 70-year lifetime.For developmental toxins, the level is reached a bit differently. The “no observable effect level” (NOEL) is determined by identifying the level that has been shown to not pose any harm to humans or animals. The NOEL is then divided by 1000 to provide an ample margin of safety. Therefore, businesses must provide a warning if they cause exposures to reproductive toxicant chemicals at a level which exceeds 1/1000th of the NOEL.
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