Hydrogen peroxide disinfecting and sterilizing compositions

• US 5,900,256 A
• Filed: 02/17/1998
• Issued: 05/04/1999
• Est. Priority Date: 09/18/1996
• Status: Expired due to Fees

• Current Assignee: Metrex Research, LLC (Envista Holdings Corporation)
• Original Assignee: Cottrell Incorporated (Markel Corporation)
• Inventors: Scoville, John R. Jr., Novicova, Inna A.
• Primary Examiner(s): PAK, JOHN D
• Application Number:
  US09/024,881
• Time in Patent Office: 441 Days
• Field of Search: 424/616, 424/126, 514/557, 514/970, 514/973, 422/28, 422/29, 252/186.29, 252/186.38, 252/186.43, 252/387, 252/394
• US Class Current: 424/616
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds

Abstract

An aqueous acidic disinfecting and sterilizing composition for medical instruments, which may include brass, copper, aluminum, stainless steel, plastic and ceramic components. The composition contains hydrogen peroxide, peracetic acid, a corrosion inhibitor system, a surfactant and a stabilizer. These compositions have in use stability and are effective as a disinfectant and/or sterilant either at room or when heated. For other applications, surfactants, sequestering agents and stabilizers may be optional.

Claims

1. An aqueous disinfecting and sterilizing anticorrosive composition comprising of by weight an admixture of:

(a) from about 6% to about 9% of hydrogen peroxide;

(b) from about 0.15% to about 0.35% of peracetic acid;

(c) from about 0.1% to about 3% of 1,2,3-benzotriazole;

(d) from about 0.05% to about 0.5% sodium nitrite;

(e) from about 0.05% to about 0.5% sodium molybdate;

(f) from about 2% to about 6% propylene glycol;

(g) from about 0.0001% to about 1.0% of a stabilizer of hydrogen peroxide;

(h) from about 0% to about 30% of a surfactant;

(i) from about 0.05% to about 10% of a chelating agent; and

(j) the balance an aqueous diluent; and

wherein said composition has a pH of less than about 5.

2. A composition in accordance with claim 1, wherein said surfactant is an anionic surfactant.

3. A composition in accordance with claim 2, wherein said surfactant is present in an amount sufficient to act as wetting agent.

4. A composition in accordance with claim 1, wherein said chelating agent is a phosphonate.

5. A composition in accordance with claim 4, wherein said phosphonate is 1-hydroxyethylidene-1,1-diphosphonic acid.

6. A composition in accordance with claim 1, wherein:

(a) said hydrogen peroxide stabilizer is 8-hydroxyquinoline; and

(b) said chelating agent is 1-hydroxyethylidene-1,1-diphosphonic acid.

7. A composition according to claim 1, wherein said pH is less than about pH 3.

8. An aqueous anticorrosive, disinfecting and sterilizing composition comprising, by weight, about:

7.3% hydrogen peroxide;

0.23% peracetic acid;

1.00% 1,2,3-benzotriazole;

0.25% sodium nitrite;

0.25% sodium molybdate;

4.10% propylene glycol;

0.0035% 8-hydroxyquinoline; and

0.70% 1-hydroxyethylidene-1,1-diphosphonic acid,

wherein said composition has a pH of less than about 5.