The solubility of Fe(NO3)3·9H2O (iron(III) nitrate nonahydrate) in acetone is generally very low. Iron(III) nitrate is highly soluble in water but has limited solubility in organic solvents like acetone. Unfortunately, specific solubility data for Fe(NO3)3·9H2O in acetone doesn't seem to be readily available. However, it's safe to assume that it would be significantly less soluble in acetone compared to its solubility in water.