Compositions – Nonreactive analytical – testing – or indicating compositions
Patent
1979-02-26
1980-12-23
Gron, Teddy S.
Compositions
Nonreactive analytical, testing, or indicating compositions
23230R, 73335, 73356, 106 145, 106 20, 106 21, 116206, 116207, 116216, C09K 300, C01K 1116, C01N 2106, C01N 2110, C01N 3122, C09D 1110
Patent
active
042409268
ABSTRACT:
A novel composition is disclosed which is useful as a sterilization indicator that can distinguish clearly between the types of sterilization employed, e.g., that indicates whether sterilization was accomplished by steam or dry heat. The novel composition comprises (1) thiobarbituric acid and (2) at least one suitable reacting moiety being capable of reacting with said acid under temperature and humidity conditions of steam and dry heat sterilization to form a colored product. Suitable reacting moieties disclosed are (a) parabanic acid and (b) dimethyl oxalate and urea.
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Akzona Incorporated
Falk Robert H.
Gron Teddy S.
Wendel Charles A.
Young Francis W.
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