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Water ice: 1.31: TFE/PDD (Teflon AF) 1.315 [16] [17] Cryolite: 1.338: Cytop: 1.34 [18] Polytetrafluoroethylene (Teflon) 1.35–1.38 [19] Sugar solution, 25%: 1.3723 [20] Cornea (human) 1.373/1.380/1.401 [21] Lens (human) 1.386–1.406: Liver (human) 964: 1.369 [22] Intestinal mucosa (human) 964: 1.329–1.338 [23] Ethylene tetrafluoroethylene ...
[15] [16] A 1:1 mixture of toluene and 1,4 dioxane has δD, δP and δH values of 17.8, 1.6 and 5.5, comparable to those of chloroform at 17.8, 3.1 and 5.7 respectively. Because of the health hazards associated with toluene itself, other mixtures of solvents may be found using a full HSP dataset.
Heavy water is less dissociated than light water at given temperature, and the true concentration of D + ions is less than H + ions would be for light water at the same temperature. The same is true of OD − vs. OH − ions. For heavy water Kw D 2 O (25.0 °C) = 1.35 × 10 −15, and [D + ] must equal [OD − ] for neutral water
At room temperature, leakage is so low that it is specified as time to self-discharge in hours, days, or weeks. As an example, a 5.5 V/F Panasonic "Goldcapacitor" specifies a voltage drop at 20 °C from 5.5 V to 3 V in 600 hours (25 days or 3.6 weeks) for a double cell capacitor. [101]