You're asking for the density of iron(III) chloride (FeCl3). However, providing a single density value for FeCl3 is tricky because it depends on the form of the compound:

* Solid FeCl3: The density of solid iron(III) chloride is around 2.90 g/cm³.

* Aqueous Solution: The density of an iron(III) chloride solution will vary depending on the concentration. You would need to know the concentration (usually expressed as molarity or weight percentage) to calculate the density.

Important Note: Iron(III) chloride is a hygroscopic compound, meaning it readily absorbs moisture from the air. This can affect its density, especially when handling the solid form.

If you need a specific density value, it's crucial to clarify the form (solid, solution, or other) and provide additional information like concentration for the solution.