Analyze the physical form of the substance
Assessing the toxicity of a substance based on its physico-chemical properties

The physical form of a chemical substance determines its contact with the body. This contact, to a greater or lesser extent, determines the substance's penetration into the body.

Contact factors differ depending on whether the substance is a solid, liquid, aerosol or gas.

• For liquids: depending on the process, there is a possibility of evaporation and aerosolization, and therefore of more or less deep penetration into the respiratory tract. Liquids of varying viscosity may come into...