Cybutryne

Cybutryne (CAS 28159-98-0) is a triazine-based biocide commercially known under trade names including Irgarol, Cybutrin, and Nuocide 1051. It carries EC number 248-872-3 and the molecular formula C11H19N5S. No E-code designation applies to this substance.

Cybutryne functions as an algaecide and antifouling agent by inhibiting photosynthesis in target organisms, disrupting electron transport in photosystem II. It is applied in marine antifouling coatings to prevent biofouling on vessel hulls and in water treatment systems to control algal growth in industrial cooling and process water circuits.

Cybutryne is supplied as a white solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should note that its use in antifouling products is under regulatory scrutiny under the EU Biocidal Products Regulation (BPR). Buyers should confirm current approval status and intended application compliance before sourcing. HS code 29336990 applies.