What chemical is used as a preservative in monomers to prevent curing?

The chemical used as a preservative in monomers to prevent curing is an inhibitor. Inhibitors are substances that slow down or prevent chemical reactions, in this case, the polymerization process that occurs when monomers cure. By adding an inhibitor, the reactive sites on the monomers remain unreacted, which allows for a longer shelf life and prevents the monomers from curing prematurely before they are applied. This is particularly important in nail technology when preparing products that need to remain stable until they are ready for use.

While other chemicals such as catalysts and activators play roles in the curing process, they encourage reaction and curing rather than inhibit it. The stabilizer can provide support in maintaining the formulation but does not have the primary function of preventing curing like an inhibitor does. Therefore, the best choice for the role of preventing curing in monomers is an inhibitor.