Tetraaminecopper(II) persulphate

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Tetraaminecopper(II) persulphate
IMGP9061.jpg
Tetraamminecopper(II) persulphate crystals.
Names
Other names
TACP
Tetraaminecopper(II) persulfate
Properties
[Cu(NH3)4(H2O)2]S2O8
Molar mass 359.82 g/mol
Appearance Blue purple solid
Poorly soluble
Solubility Insoluble in hydrocarbons
Hazards
Safety data sheet None
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tetraamminecopper(II) persulphate (sometimes shortened to TACP) is a very weak primary explosive with a very short shelf life.

Properties

Chemical compounds

TACP will decompose when heated.

Physical

TACP is a blue-purple solid, poorly soluble in water.

Explosive

TACP is a weak primary explosive, which explodes when dry. It has moderate sensitivity to shock, but heat will cause it to detonate.

Production

If solutions of ammonium persulfate and tetraamminecopper(II) sulfate are cooled and then mixed, bright purple crystals of the TACPs will settle out. These should be filtered and dried as quickly as possible, as the solid will completely break down into a unknown green solid with no energetic properties in a few hours.

This decomposition may be a reaction with water but is more likely to be a loss of ammonia from the structure.

Projects

  • Make low explosive

Handling

Safety

TACP will decompose to release ammonia gas, which is an irritant.

Storage

Tetraamminecopper(II) persulphate will quickly break down and cannot be stored for long periods of time. It decomposes completely after 6 months.

Disposal

Dispose it like every other copper ammonia complex.

References

Relevant Sciencemadness threads