Microbicidal composition
View Patent ↗A microbicidal composition comprising relatively high levels of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one; a metal nitrate; and water. The composition optionally contains magnesium chloride.
1. A microbicidal composition comprising:
(a) 27-37% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one in which the weight ratio of 5-chloro-2-methyl-4-isothiazolin-3-one to 2-methyl-4-isothiazolin-3-one is from 4:1 to 1:1;
(b) 12-27% of a metal nitrate;
(c) 35-50% water; and
(d) 9-12% magnesium chloride;
wherein the composition is substantially free of bromic acid, iodic acid, periodic acid or their salts.
2. The composition of claim 1 having 27-35% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, 38-50% water and 15-22% of a metal nitrate.