|13.10 Risk factor Toxicity/Hazards to health|
|13.10.1 Classification of poisons|
|13.10.2 Dose, quantity of harmful substance|
|13.10.4 Loss prevention measures|
|The toxicity of many substances is such that exposure to even small doses may be harmful to human health or even fatal. Classifying poisons by their chemical composition is inappropriate because chemically related substances may exhibit all levels of toxicity from toxicologically non-hazardous to highly toxic. There is no precise classification of poisons by the level of hazard they present for either production or transport purposes.
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