Stabilization of 3-isothiazolone solutions

摘要

Stabilisation of solns. of 3-isothiazolone cpd(s). (selected from 5-chloro-2-methyl-3-isothiazolone (Ia) and/or 2-methyl-3-isothiazolone (Ib)) in a solvent system consisting essentially of water, against chemical decomposition, comprises incorporation of 0.02-0.0008 pts. wt. of copper ion (in the form of a copper salt other than nitrate or nitrite) per 1.5 wt.pts. of the 3-isothiazolone cpd(s)., provided that no nitrate, nitrate or magnesium is incorporated or present in the water soln.