It is a white solid that melts near room temperature.
It is an isothiazolinone, a class of heterocyclic compounds used as biocides.
DCOIT has attracted attention as an antifouling compound.
It is a replacement for organotin compounds that have been largely banned for causing environmental damage.
[1] Isothiazolinones are highly bioactive and have attracted scrutiny for causing contact dermatitis.