Patent ID: 8252844

Claim:
A stable aqueous aldehyde solution that includes: (a) an aldehyde comprising at least one of the following: a monoaldehyde (Diagram 1), a dialdehyde (Diagram 2) and a cyclic aldehyde (Diagram 3) in a 0.001% to 25% m/v concentration: R—CHO Diagram 1 OHC—R 1 —CHO Diagram 2 R 3 —CHO Diagram 3 and wherein: R =hydrogen, a straight hydrocarbon chain between 1 and 12 carbon atoms in length, or a branched hydrocarbon chain between 2 and 12 carbon atoms in length; —R 1 =a hydrocarbon chain between 2 and 12 carbon atoms in length; and —R 3 =a cyclic hydrocarbon having 5 or 6 carbon atoms, (b) a surfactant or detergent selected from the group consisting of: an alcohol ethoxylate surfactant, a nonylphenol surfactant, sodium lauryl ethyl sulphate, sodium lauryl sulphate, and cocopropyldiamide (CPAD); (c) a sufficient amount of a pH modifier to bring the pH of the solution to within a 6.0 to 8.5 range; and (d) a buffer comprising sodium acetate or sodium acetate tri-hydrateand at least one component selected from the group consisting of: potassium acetate, calcium acetate, magnesium acetate, lithium acetate, propylene glycol, hexalene glycol, sodium phosphate, sodium tri-phosphate, potassium phosphate, lithium phosphate, zinc perchlorate, zinc sulphate, cupric chlorate and cupric sulphate.