Disinfectant Composition
A composition comprising: (a) a hydrogen peroxide source (b) an acetyl source (c) a peracetic acid bleachable dye wherein, in solution, colour generated by said peracetic acid bleachable dye is substantially discharged when a biocidally effective concentration of peracetic acid is achieved.
1 . A composition comprising:
(a) a hydrogen peroxide source
(b) an acetyl source
(c) a peracetic acid bleachable dye
wherein, in solution, colour generated by said peracetic acid bleachable dye is substantially discharged when a biocidally effective concentration of peracetic acid is achieved.
2 . A composition according to claim 1 comprising in addition a substantially bleach stable dye.
3 . A composition according to claim 1 wherein the biocidally effective concentration is greater than 0.14% w/w of peracetic acid of the solution.
4 . A composition according to claim 1 wherein the composition is in powder form.
5 . A composition according to claim 1 wherein the solution comprises water as solvent.
6 . A composition according to claim 1 wherein the peracetic acid bleachable dye is a 1-arylazo-2-hydroxynaphthyl dye.
7 . A composition according to claim 6 wherein the peracetic acid bleachable dye is selected from the group consisting of Amaranth (C.I. 16185), Ponceau 4R (C.I. 16255), FD&C Yellow 6 (C.I. 15985), any other 1-arylazo-2-hydroxynaphthyl dye, and combinations thereof.
8 . A composition according to claim 7 wherein the peracetic acid bleachable dye is Amaranth (C.I. 16185).
9 . A composition according to claim 2 wherein the substantially bleach stable dye is selected from the group consisting of Acid Blue 182, Acid Blue 80, Direct Blue 86, Acid Green 25 (C.I. 61570) and combinations thereof.
10 . A composition according to claim 9 wherein the substantially bleach stable dye is Acid Blue 182 (C.I. 61570)
11 . A composition according to claim 1 wherein the hydrogen peroxide source is selected from the group consisting of sodium perborate, sodium percarbonate, urea peroxide, povidone-hydrogen peroxide, calcium peroxide, hydrogen peroxide solution, and combinations thereof.
12 . A composition according to claim 11 wherein the hydrogen peroxide source is sodium percarbonate.
13 . A composition according to claim 1 wherein the acetyl donor is selected from the group consisting of tetraacetylethylenediamine (TAED), N-acetyl caprolactam, N-acetyl succinimide, N-acetyl phthalimide, N-acetyl maleimide, pentaacetyl glucose, octaacetyl sucrose, acetylsalicylic acid, tetraacetyl glycouril, and combinations thereof.
14 . A composition according to claim 13 wherein the acetyl donor is tetraacetylethylenediamine (TAED).
15 . A composition according to claim 1 in addition comprising one or more of an acidifying agent, a wetting agent, a pH buffering agent, a sequestering agent, a flow modifier, a perfume, other additives, or combinations thereof.
16 . A composition comprising a combination of:
(i) a first part comprising a hydrogen peroxide source; and
(ii) a second part comprising a mixture of an acetyl source and a peracetic acid bleachable dye;
wherein, in solution, colour generated by said peracetic acid bleachable dye is substantially discharged when a biocidally effective concentration of peracetic acid is achieved.
17 . The composition of claim 1 wherein a powder blend of the hydrogen peroxide source, acetyl source and peracetic acid bleachable dye is not classifiable as a Dangerous Good.
18 . The composition of claim 1 wherein a powder blend of the hydrogen peroxide source, acetyl source and peracetic acid bleachable dye is not classifiable as a self-reactive solid.
19 . A process of preparing a solution having biocidal properties, which process comprises dissolving the composition of claim 1 in a solvent and waiting for the colour generated by said peracetic acid bleachable dye to substantially discharge.
20 . A biocidal composition comprising a solution of a hydrogen peroxide source, an acetyl source and a peracetic acid bleachable dye, wherein colour generated by said peracetic acid bleachable dye has substantially discharged.
21 . The use of a composition of claim 1 for disinfecting an object or surface requiring disinfection.
22 . A method of disinfecting an object or surface requiring disinfection, which method comprises preparing a solution of the composition of claim 1 and applying the solution to said object or surface after the colour generated by said peracetic acid bleachable dye has substantially discharged.
23 . A method of disinfecting an object or surface requiring disinfection, which method comprises applying to said object or surface the biocidal composition of claim 20 .