Canada to approve biocide 2-methyl-4-isothiazolin-3-one

The Canadian Pest Management Regulatory Agency (PMRA) has proposed to grant full registration for the sale and use of Kordek 573T Technical Microbicide, Kordek 573F Industrial Microbicide, Kordek LX 5000 Industrial Microbicide, Kordek MLX Industrial Microbicide, Rocima 550 Industrial Microbicide and Neolone M-10 Industrial Microbicide, containing the technical grade active ingredient 2-methyl-4-isothiazolin-3-one, to be used as a material preservative in paint, coatings, metal-working fluids, household products and polymer latices. The public comments will be opened until May 5, 2014.

The compound 2-methyl-4-isothiazolin-3-one is a new active ingredient proposed for use as an in-container preservative to prevent bacterial spoilage in polymer latices, metal-working fluids, mineral slurries, paints, detergents, cleaners, and polishes. This active ingredient is a broad-spectrum biocide that acts by disrupting microbial metabolism. While the combination of 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one has been registered as an integrated system product for in-can preservation of a number of materials, the use of 2-methyl-4-isothiazolin-3-one alone constitutes a new active ingredient.