The product that i wanna grow up the crystal is only soluble in water.
In this situation, how can i get a crystal?
Layering with the non-polar solvent?
Vapor diffusion? or etc.....
Is the compound thermally stable? You can use thermal gradient and heat up compound in water to get a saturated solution. Cool it should lead to crystallization. Another way is to allow the water to evaporate slowly.
Layering non-polar solvents won't work if the solvent isn't miscible with water. If ethanol is non-polar enough, that could do it.
http://web.mit.edu/x-ray/cystallize.html
Ka Young Ryu
I agree with the Joseph S Merola explanation. However, I would like to suggest you another approach for this type crystals. You should use Sankarnarayan-Ramasamy method (SR Method). In this method, there are two heater one below container (solvent) having low temperature (say 28 degree) and another is above container high temperature (say 34 degree) which will maintain proper thermal gradient. This temperature gradient vary with material to material, therefore you try for your material as an experiment. At this instant, I don’t have their references but if you need then I will try references of this method.
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