Toxicity

Refers to the relative ability to cause damaging effects after contact with the body or into susceptible parts of the body, or simply the ability to damage the organism. It can also be simply expressed as the ability of an exogenous chemical to damage an organism under certain conditions. The greater the ability of an exogenous substance to damage the body, the higher its toxicity. The level of toxicity of exogenous chemicals is of relative significance only. In a certain sense, as long as a certain amount is reached, any substance is toxic to the body. If it is lower than a certain amount, no substance is toxic. The key is the amount of contact between the substance and the body, the route of contact, the method of contact, and the substance. Physico-chemical properties in itself, but in most cases the amount of contact with the body is the determining factor.