VAPOUR PRESSURE, SURFACE TENSION AND DENSITY OF OSMIUM TETROXIDE

Eijiro Ogawa

Bulletin of the Chemical Society of Japan · 1931 · 13 citations · 1 references

Concepts

Abstract

Abstract (I) The structure of osmium tetroxide was discussed. (II) It was made clear that the phenomenon of an enantiotropy of osmium tetroxide set forth by Krauss did not exist. (III) The vapour pressure of osmium tetroxide was measured between 15° and 130°C. Melting point, boiling point, heat of sublimation, heat of vaporization, heat of fusion, and free energy change among solid, liquid and vapour were determined. (IV) Surface tensions and densities from melting point up to 150°C. were determined. (V) Osmium tetroxide in liquid state somewhat associates below 70°C., though it is a normal liquid above 75°C. (VI) The critical temperature was determined as 405°C.

References

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