Zinc Salt Of Isothiazolone Compound, Method For Reducing Irritation Caused By Isothiazolone Compound, Antibacterial and Antifungal Method Using Zinc Salt of Isothiazolone Compound, and Antibacterial and Antifungal Composition

A zinc salt of an isothiazolone compound represented by a formula (1):

• wherein the zinc salt is obtained by mixing at least one isothiazolone compound represented by the formula (1) (in the formula, R1 and R2 each independently represents a hydrogen atom, a halogen atom, or an alkyl group of 1 to 20 carbon atoms, and R1 and R2 may bind to each other to form a substituted or unsubstituted carbocycle) and at least one zinc compound (excluding the zinc salt of an isothiazolone compound represented by the formula (1)) at a predetermined ratio.

A method for reducing irritation caused by an isothiazolone compound represented by a formula (1),

• the method comprising:
• converting the isothiazolone compound represented by the formula (1) into a zinc salt,
• wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, or an alkyl group of 1 to 20 carbon atoms, and R1 and R2 may bind to each other to form a substituted or unsubstituted carbocycle.