Anti-Microbial Composition and Method of Using Same
An antimicrobial composition contains hydrogen peroxide, an organic sulfonic acid, and a peroxide adjuvant. The peroxide adjuvant is a small molecule organic acid, such as formic acid. The antimicrobial composition is very effective at sanitizing surfaces in all different types of fields, such as in the healthcare industry. The antimicrobial composition is well suited for controlling C.difficile .
1 . An antimicrobial composition comprising:
a hydrogen peroxide source; and
a peroxide adjuvant, the peroxide adjuvant comprising an organic acid and/or salt thereof having a pKa from about 1 to about 6, the antimicrobial composition being free of acetic acid, peracetic acid, and/or chlorine bleach, the peroxide adjuvant being present in the composition in an amount sufficient for the composition to achieve a 3 log 10 reduction or greater after a three minute contact time when tested against Clostridium difficile according to ASTM Test Methods E2197-11 and E2839-11.
2 . The antimicrobial composition as defined in claim 1 , further comprising an organic sulfonic acid.
3 . The antimicrobial composition as defined in claim 1 wherein the peroxide adjuvant comprises an organic acid and/or salt thereof containing one or two carbon atoms.
4 . The antimicrobial composition as defined in claim 1 , wherein the peroxide adjuvant comprises formic acid, a formic acid salt, or mixtures thereof.
5 . The antimicrobial composition as defined in claim 1 , wherein the peroxide adjuvant comprises glycolic acid, a salt of glycolic acid, or mixtures thereof or wherein the peroxide adjuvant comprises a bicarboxylic acid such as oxalic acid or a tricarboxylic acid.
6 - 8 . (canceled)
9 . The antimicrobial composition as defined in claim 2 , wherein the organic sulfonic acid comprises a C 1 -C 5 alkylsulfonic acid, a sulfonated C 1 -C 5 carboxylic acid, a substituted or unsubstituted aromatic sulfonic acid, mono-alkylphenylsulfonic acid, a di-alkylphenysulfonic acid, or mixtures thereof, wherein the substituted aromatic sulfonic acid is substituted with at least one C 1 -C 3 alkyl group.
10 . The antimicrobial composition as defined in claim 2 , wherein the organic sulfonic acid comprises methane sulfonic acid or benzene sulfonic acid or wherein the organic sulfoci acid comprises toluene sulfonic acid, xylene sulfonic acid, ethylbenzene sufonic acid, or mixtures thereof.
11 . (canceled)
12 . The antimicrobial composition as defined in claim 1 , wherein the hydrogen peroxide source comprises hydrogen peroxide, and wherein the hydrogen peroxide and the peroxide adjuvant are present in the composition in a weight ratio of from about 100:1 to about 1:2 and/or wherein the hydrogen peroxide and the organic culfonic acid are present in the composition in a weight ratio of from about 100:1 to about 1:3.
13 . (canceled)
14 . The antimicrobial composition as defined in claim 1 , wherein the hydrogen peroxide source comprises hydrogen peroxide, the hydrogen peroxide being present in the composition in an amount from about 0.2% to about 20% by weight and/or wherein the peroxide adjuvant is present in the composition in an amount from about 0.05% to about 7% by weight, and/or wherein the organic sufonic acid is present in the composition in an amount of from about 0 . 1 % to about 8 % by weight.
15 . (canceled)
16 . (canceled)
17 . The antimicrobial composition as defined in claim 1 , wherein the antimicrobial composition contains formic acid and/or a salt formic acid in combination with glycolic acid and/or a salt glycolic acid.
18 . The antimicrobial composition as defined in claim 1 , wherein the composition has a pH of from about 1 to about 5.
19 . The antimicrobial composition as defined in claim 1 , further containing a liquid carrier, the liquid carrier comprising water, an alcohol, or mixtures thereof.
20 . The antimicrobial composition as defined in claim 1 , wherein the composition achieves at least a 4 log 10 reduction, such as at least a 5 log 10 reduction, such as at least a 6 log 10 reduction after a 3 minute contact time when tested against C. difficile according to ASTM Test Methods E2197-11 and E2839-11.
21 . A wiping product comprising:
a liquid absorbent substrate; and
an antimicrobial composition as defined in the claim 1 , antimicrobial composition being absorbed into the substrate.
22 . A method for disinfecting a hard surface comprising:
contacting a surface with an antimicrobial composition as defined in claim 1 .
23 . The method as defined in claim 22 , wherein the hard surface comprises a surface used in the health care industry or in the veterinarian industry, and/or wherein the hard surface comprises food processing equipment of a food preparation surface.
24 . (canceled)
25 . The method as defined in claim 22 , wherein the antimicrobial composition is applied to a liquid absorbent substrate and then contacted with the surface using the substrate.
26 . An antimicrobial composition precursor comprising:
an organic sulfonic acid; and
a peroxide adjuvant, the peroxide adjuvant comprising an organic acid and/or salt thereof having a pKa from about 1 to about 6, the antimicrobial composition precursor being free of acetic acid, the organic sulfonic acid being present in the composition in an amount from about 15% to about 60% by weight, the peroxide adjuvant being present in the composition in an amount from about 5% to about 20% by weight.
27 . The antimicrobial composition precursor as defined in claim 26 , wherein the peroxide adjuvant comprises formic acid, a formic acid salt, or mixtures thereof
28 . The antimicrobial composition comprising the antimicrobial composition precursor as defined in claim 26 combined with a hydrogen peroxide source.