So I'm possibly going to work with diiodomethane (CH2I2) to conduct a density separation. My questions are now:
1. What should I solve CH2I2 in as this is not very soluble in water.
2. How reactive will the solved CH2I2 to other chemicals found in sediments? MEtals, carbonates and organic compunds are of main concern.
3. Will Ch2I2 exchange carbon atoms with CaCO3 or will it work as a catalyzator and exchange oxygen atoms with CaCO3?
I know the chemical is toxic but this experiment requires a high density liquid (>3g/mL) which of the density should be able to be manipulated by adding more solvent to the solution.