Vapor sterilization using inorganic hydrogen peroxide complexes

Details Vapor sterilization using inorganic hydrogen peroxide complexes Vapor sterilization using inorganic hydrogen peroxide complexes

1996-09-19

1998-07-28

Thornton, Krisanne

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

422 1, 422 22, 422295, 422305, 423587, A61L 900

Patent

active

057859345

ABSTRACT:
An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from an inorganic hydrogen peroxide complex. The peroxide vapor can be released at room temperature and atmospheric pressure; however, the pressure used can be less than 50 torr and the temperature greater than 86.degree. C. to facilitate the release of hydrogen peroxide vapor. Preferred hydrogen peroxide complexes for use in the invention include Na.sub.4 P.sub.2 O.sub.7.3 H.sub.2 O.sub.2 and KH.sub.2 PO.sub.4.H.sub.2 O.sub.2. The heating rate can be greater than 5.degree. C. Optionally, a plasma can be used in conjunction with the vapor.

REFERENCES:
"Peroxides and Peroxy Compounds, Inorganic", Kirk-Othmer Encyclopedia of Chemical Technology vol. 17, p. 1-26, TP 9 E685 1978 V. 17.
K.V. Titova, E.I. Kolmakova, and I.P.Gelyuk, "Peroxosolvates of Sodium Phosphates Na.sub.3 PO.sub.4 --5H.sub.2 O.sub.2 ", Institute of New Chemical Problems, Russian Academy of Sciences, pp. 721-725, Oct. 20, 1993.
N.V. Krivtsov, K.V. Titova, and V. Ya. Rosolovskii, "The Enthalpy of Dissolution and Standard Entholpy of Formation of Sodium Pyrophosphate Peroxosolvate Na.sub.4 P.sub.2 O.sub.7 --3H.sub.2 O.sub.2 ", Institute of New Chemical Problems, Russian Academy of Sciences, pp. 625-627, Jul. 7, 1994.
N.V Krivtsov and K. V. Titova, "Enthalpy of Dissolution and Standard Enthalpy of Formation of Na.sub.2 HPO.sub.4 --2H.sub.2 O.sub.2 ", Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, pp. 1741-1742, Feb. 2, 1993.

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