Possible by-products from antifouling chlorination may include chlorobromoform, halogenated benzenes, and phenols (Jenner and Janssen-Mommen 1993).
Sodium hypochlorite is corrosive and causes burns to eyes, skin, and internal organs if ingested or inhaled.
When handling sodium hypochlorite, wear rubber gloves and splash shield.
Chlorine gas presents risk of potentially dangerous leaks. Extensive safety training may be required for those handling the material and for any response team.
Zebra Mussel Chemical Control Guide
Hypochlorite and Chlorine Gas