Decay constant for singlet oxygen in the solvent:

Benzene/Methanol (80:20)

Young, R.H.; Brewer, D.; Keller, R.A.
J. Am. Chem. Soc. 95(2): 375-9 (1973)

Lifetime is 2.6 x 10–5 s
Decay rate is 4 x 104 s–1

Experimental method: pulsed laser photolysis, substrate disappearance
Sensitizer is MB,
Substrate is DPBF.

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