Ozone friendly sterilant mixture

Details Ozone friendly sterilant mixture Ozone friendly sterilant mixture

1992-09-21

1994-05-24

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Effervescent or pressurized fluid containing

Organic pressurized fluid

422 34, 422 37, A61L 904, A01N 3100

Patent

active

053146824

ABSTRACT:
Non-ozone depleting sterilant compositions made of ethylene oxide and 1,1,1,2,3,3,3-heptafluoropropane. These compositions provide good sterilization characteristics, and are compatible with contemporary environmental concerns.
One preferred aspect of the invention is a sterilant mixture comprising from about 20 mole percent to about 35 mole percent ethylene oxide and from about 65 mole percent to about 80 mole percent HFC-227ea. Compositions comprising from about 25 mole percent to about 30 mole percent ethylene oxide and from about 70 mole percent to about 75 mole percent HFC-227ea are preferred, with a composition comprising about 27 mole percent ethylene oxide and about 73 mole percent HFC-227ea being most preferred.

REFERENCES:
patent: 5039484 (1991-08-01), Chippett et al.
patent: 5039485 (1991-08-01), Conviser et al.
patent: 5118494 (1992-06-01), Schultz et al.
"Sterilization Techniques," 21 Kirk-Othmer Encyclopedia of Chemical Technology 626-644.

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