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Download as PDF; Printable version; ... Vapor pressure of acetone based on formula, = + from ... 12% 1093 cm −1: 68% 903 cm −1:
Acetone (2-propanone or dimethyl ketone) is an organic compound with the formula (CH 3) 2 CO. [22] It is the simplest and smallest ketone ( >C=O ). It is a colorless, highly volatile , and flammable liquid with a characteristic pungent odour, very reminiscent of the smell of pear drops .
In hydrofluoric acid, NbF 5 converts to [NbF 7] 2-and [NbF 5 O] 2-. The relative solubility of K 2 [MFO] (M = Nb, Ta) is the basis of the Marignac process for separation of Nb and Ta. NbCl 5 forms a dimeric structure (edge-shared bioctahedron) in contrast to the corner-shared tetrameric structure of the fluoride.
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
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This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
NbF 4 absorbs vapor strongly and turns into NbO 2 F in moist air. It reacts with water to form a brown solution and a brown precipitate whose components are unknown. It is stable between 275 °C and 325 °C when heated in a vacuum. However, it disproportionates at 350 °C rapidly to form niobium(V) fluoride and niobium(III) fluoride: [2]
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