Decay constant for singlet oxygen in the solvent:

1,1-Dichloroethane

Salokhiddinov, K.I.; Byteva, I.M.; Gurinovich, G.P.
J. Appl. Spectrosc. 34(5): 561-4 (1981)

Lifetime is 7.0 x 10–5 s
Decay rate is 1.4 x 104 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is PdMPDME
Paper says ethylene dichloride.

Usui, Y.; Tsukada, M.; Nakamura, H.
Bull. Chem. Soc. Jpn. 51(2): 379-84 (1978)

Decay rate is 1.5 x 104 s–1

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

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