1
| ● | 1980 | 298.1 | Yes | Fused silica | 5, 9 | Differential path length with two cells; corrected for reflectance | Three distillations, the second one using KMnO4 and KOH; vapor then passed through an oxidizing furnace at 870 K |
2 | + | 1988 | Not given | No | Split-pulse laser method | | | Doubly distilled |
3 | O | 1986 | Not given | No | Fused-quartz windows | 50.3 | Single cell; windows tilted to minimize reflections | Deionized, then fed through an Organic-pure system and finally distilled twice |
4 | ∇ | 1979 | 291.56 | Yes | Stainless-steel cylinder with quartz windows | 2.5 | Optoacoustic spectroscopy | Deionized distilled H2O, triply distilled under N2 |
5 | ⊕ | 1978 | 299.56 | No | Fused Pyrex | 474.8 | Two cells, differential path-length method; split-beam apparatus accounted for reflection from cell window | Deionized, filtered H2O |
6 | ⊡ | 1977 | Not given | No | Pyrex | 8.0 | Adiabatic laser calorimetry; corrections were made for cell reflection, heat loss, and separate mass and heat capacities of sample and cell | Doubly distilled in quartz |
7 | ∗ | 1974 | Not given | | Infrasil quartz | Various 1.0 → 50.0 | Eight cells, differential path-length method; corrected for cell window reflectance and absorbance | |
8 | | 1973 | 298.15 | | | | Smooth point graph derived from a review of previous literature values | |
9 | | 1965 | Not given | No | Ni cylinders with silica windows | 79.2 | Two cells, differential path-length method; cells matched to 1% | Doubly distilled in a silica still without boiling |
10 | | 1963 | 296.16 | No | Acrylic plastic cylinder with Pyrex windows | 72.0 | Two cells, differential path-length method; correction for reflection losses | Triply distilled over quartz and filtered |
11 | | 1956 | 292.15 | No | Pyrex with silica windows | 7.97 | Two cells, differential path-length method; no check on cell matching | Triply distilled in silica with first distillation from KMnO4/Ba(OH)2 |
12 | | 1955 | Not given | No | Plastic cylinder with silica windows | 100 | Single cell; no correction for window absorption and reflection | Distilled |
13 | ⋄ | 1945 | Not given | No | Glass | 344 | Two cells, differential path-length method | Distilled H2O allowed to stand for several weeks |
14
| ◆ | 1939 | Not given | No | Brass cylinder lined with ceresin wax | 100 | Two cells, differential path-length method; no corrections for window absorbance or reflectance | Distilled H2O, redistilled in a tin still |
15 | ▲ | 1938 | Not given | No | Brass tube, silver plated with plate glass windows | 200 | Single cell | Doubly distilled in tin; water fed directly to cell |
16 | ⊞ | 1934 | Not given | No | Pyrex cylinder with quartz end windows and rubber washers | 271.7 | Two cells, differential path-length method; cell windows matched | Distilled H2O and redistilled in quartz without boiling |
17 | | 1933 | Not given | No | Cell body unknown, silica windows | 2.0 | Single cells with movable windows; differential path-length method | Distilled |
18 | w | 1936 | Not given | No | Silica windows | 2.0 | Single cell | Triply distilled |
19 | □ | 1931 | Not given | No | Quartz optical system | 500 | Two cells, differential path-length method | Distilled |
20 | v | 1928 | Not given | No | Pyrex cylinders with quartz windows | 1.92 | Two cells, differential path-length method; no check on cell matching | Triply distilled in Pyrex and redistilled in quartz |
21 | | 1925 | 273.66 299.16 329.16 329.16 350.16 363.16 | No | Brass cylinder with glass windows | 10 | Single cell; corrections for reflectance | Distilled H2O and boiled |
22 | ∧ | 1922 | Not given | No | Fused Pyrex | 90 | Two cells, differential path-length method | Distilled in vacuo without boiling |
23 | | 1918 | Not given | No | Brass cylinder lined with paraffin | 320 | Spectrophotometer | Distilled |
24 | | 1904 | Not given | No | Glass | 550 | | Repeated distillation over KOH and KMnO4 and redistilled twice; dust removed by precipitation of a gelatinous precipitate |
25 | ○ | 1895 | Not given | No | Glass | 0.01–100 | Spectrograph and bolometer | Distilled |
26 | ● | 1894 | Not given | No | Glass cylinder and windows | 100 | Two cells, differential path-length method; corrections for end reflectance and absorbance | Distilled H2O, redistilled in black tin, filtered |
27 | Δ | 1891 | Not given | No | Glass | 200 | | Distilled and passed through Swedish paper |
This paper | | 1999 | 298.1 | Yes | Borosilicate glass | Various | Differential path length | Triply distilled, with oxidative purification |