N,N,N',N'-Tetramethyl-p-phenylenediamine

Friend, J.A.; Roberts, N.K.
Aust. J. Chem. 11: 104-19 (1958)

E = ~265(mV), pH = 8-9

Pol.; other values pH 4-8

Steenken, S.; Neta, P.
J. Phys. Chem. 83(9): 1134-7 (1979)

E = 82(mV), ionic strength = 0.5, pH = 13.5
Questionable or superseded value.

Reference compound: 6.1.4
Reference E: 183 mV
Co-solute: glycol

Concentrations used to estimate equilibrium constant + Kinetics used to estimate equilibrium constant, ref. potl. later revised

Prince, R.C.; Linkletter, S.J.G.; Dutton, P.L.
Biochim. Biophys. Acta. 635: 132-48 (1981)

E = 240(mV), pH = 7-12

Pol.

Steenken, S.; Neta, P.
J. Phys. Chem. 86(18): 3661-7 (1982)

E = 266(mV), ionic strength = 0.5, pH = 13.5 E = 265(mV)
Recommended value.

Reference compound: DMAP; 6.2.10
Reference E: 174; 208 mV
Co-solute: glycol

Rec., Concentrations used to estimate equilibrium constant + Kinetics used to estimate equilibrium constant; Concentrations used to estimate equilibrium constant + Kinetics used to estimate equilibrium constant, E same at pH 7

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