Final answer:
If no hydrogen scavenger is present in the formulation of addition (vinyl) silicones, unreacted monomers may remain in the finished product, posing potential health risks.
Step-by-step explanation:
If no hydrogen scavenger is present in the formulation of addition (vinyl) silicones, it means that there is no compound present that can react with and remove any residual monomer left after the polymerization process.
This can result in the presence of unreacted monomer in the finished product, which can have potential health risks. Some of these unreacted monomers, such as formaldehyde, styrene, vinyl chloride, and bisphenol-A, are known carcinogens.
Therefore, it is important to ensure the presence of a hydrogen scavenger or appropriate measures to remove any residual monomer to minimize health risks.