2, 4 di tert-butyl-6-(5-chlorobenzotriazole-2-yl)phenol

This is an additive that acts as a UV stabilizer so the sealant doesn’t fade or deteriorate due to sunlight.

How can this chemical affect my health?

Chronic (Long Term) Effects

pbt-red.png PBT (Persistent Bioaccumulative Toxicant) – Does not break down readily from natural processes, accumulates in organisms concentrating as it moves up the food chain, and is harmful in small quantities.