Compositions and systems for disinfection

A disinfectant system, the disinfectant system comprising a first aqueous composition and a second aqueous composition, the first aqueous composition comprising a first peracid reactant compound that is either a peroxide compound or an organic acid compound, and the second aqueous composition comprising a second peracid reactant compound that is the other of the first peracid reactant compound, wherein:

• (a) the first aqueous composition and the second aqueous composition each comprise a first alcohol, the first alcohol selected from the group of lower-chain alcohols consisting of ethanol, isopropanol, t-butanol, and combinations thereof;
• (b) at least one of the first aqueous composition and the second aqueous composition comprises an alcohol blend, the alcohol blend comprising the first alcohol and a second alcohol, wherein:
• (i) the second alcohol comprises at least one C5-C8 aliphatic, C5-C8 alicyclic, or C5-C8 aromatic alcohol compound;
• (ii) the aqueous composition comprising the alcohol blend has a flash point of at least 50° C.;
• (iii) the mass ratio of the first alcohol relative to the second alcohol within the aqueous composition comprising the alcohol blend is at least 1:10, and up to 4:1;
• (iv) the second alcohol comprises up to 2.5% by weight of the aqueous composition comprising the alcohol blend;
• (v) the alcohol blend comprises at least 2.0% by weight, and up to 4.5% by weight, of the aqueous composition comprising the alcohol blend;
• and
• (vi) the surface tension of the aqueous composition comprising the alcohol blend is less than 30 dyne/cm at 20° C.;
• (c) the other of the first aqueous composition and the second aqueous composition that does not contain the alcohol blend comprises at least 0.05% by weight, and up to 5% by weight, of the first alcohol;
• (d) at least 99.5% by weight of each composition is comprised of components having a vapor pressure of at least 1.0 mm Hg at 20° C.;
• and
• (e) when the first aqueous composition and the second aqueous composition are applied separately to, and combined upon, a surface in need of disinfecting, a peracid composition is formed in situ, thereby disinfecting the surface.