Sodium dichloroisocyanurate dihydrate

Corrosive; severe eye, skin and respiratory irritant. It can also form chlorine gas, which will burn the eyes, nose and mouth. Studies have found that high doses of this chemical cause kidney damage. In its concentrated form, this chemical is very toxic to aquatic organisms and may cause long-term effects in aquatic ecosystems.

Found in: toilet bowl cleaners, deodorizers, surface cleaners, and disinfectants