Decay constant for singlet oxygen in the solvent:

Deuterium oxide/Ethanol (70:30)

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Nazarova, O.V.; Yartsev, E.I.
Biophysics (Engl. Transl.) 31(2): 376-8 (1986)

Lifetime is 2.5 x 10–5 s
Decay rate is 4.0 x 104 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is HP.

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