| abstract |
A method of controlling biofouling in a aqueous systems comprising introducing into the system a biocidally effective amount of a water soluble perhalide of the formula: <IMAGE> where R1 and R2 are hydrogen, hydroxyethyl, alkyl, cyclic alkyl, (alpha, omega)-alkyl, alkyl ether, polyether, heterocyclic ring-substituted alkyl, and halogenated alkyl; n is 2 to 6: X is chlorine, bromine or iodine; and only one of R1 and R2 may be hydrogen. |