Dichlorooctylisothiazolinone

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.