Allergic contact dermatitis from 2‐n‐octyl‐4‐isothiazolin‐3‐one, a paint mildewcide

Abstract
Severe allergic contact dermatitis from a paint mildewcide, 2-n-octyl-4-isothiazolin-3-one, developed in a worker formulating latex paints within a paint manufacturing company, Guinea pig maximization testing demonstrated this to be a moderate sensitizer. Further cases of allergic contact dermatitis may be encountered as the use of this biocide increases in the market place.