Dichlorine heptoxide

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Dichlorine heptoxide
Names
IUPAC name
Dichlorine heptoxide
Other names
Chlorine(VII) oxide
Perchloric anhydride
(Perchloryloxy)chlorane trioxide
Identifiers
Jmol-3D images Image
Properties
Cl2O7
Molar mass 182.901 g/mol
Appearance Colorless liquid
Density 1.9 g/cm3
Melting point −91.57 °C (−132.83 °F; 181.58 K)
Boiling point 82 °C (180 °F; 355 K)
Hydrolyzes to form perchloric acid
Hazards
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Dichlorine heptoxide is a clear, oily liquid. It is a strong oxidizing agent.

Properties

Chemical

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Physical

Dichlorine heptoxide is a clear, oily, very volatile liquid.

Availability

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Preparation

This preparation is extremely dangerous because of the explosive and very oxidizing nature of Cl2O7.

Dichlorine heptoxide can be obtained by reacting perchloric acid with phosphorus pentoxide.
12 HClO4 + P4O10 → 4 H3PO4 + 6 Cl2O7

The reaction has to be performed under 0°C, optimally between -70°C to -10°C. The resulting product has to be distilled very carefully under vacuum to obtain pure dichlorine heptoxide.

Projects

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Handling

Safety

To do. Dichlorine heptoxide is explosive and a strong oxidizer.

Storage

Disposal

To do

References

Relevant Sciencemadness threads