how can i seperate green food coloring from water?

Question

need for science experiment !!! help!!

Answer 1

Not quite sure if this will work, but it's worthe a shot.
Boil the liquid that contains the green dye.
While it's cooling, add ammonia and stir thoroughly.
(this should polarize all solvents seperately from the water)
Freeze the liquid in a plastic bag, during the freezing process you should be able to clearly see the seperation.

by the way, the above answer saying that if you distill the liquid that it will seperate the two products, is completely bogus. Distillation will purify some of the h20, but not all of it since some compounds follow through distiallation.

peace and love,
rob

Answer 2

At the disposal of your home materials, it is almost impossible to separate green food coloring from the water. You can always boil the water, so the water will turn into steam and evaporate from the container. All you will have left will be the once-dissolved pigment. But you would be separating the water from the food coloring.

Below is a link that describes a science experiment about food coloring. Maybe you can change your approach, because filtration will not remove dissolved particles (as you can't remove the salt crystals from a homogeneous NaCl(aq) solution).

An alternate approach is to use paper chromatography. You can use this method to separate the different colors that were used to make black ink.

Answer 3

Easy. Boil the coloring. The water will boil off leaving the green crap behind.

Answer 4

Distillation, the process of boiling water, changing it into vapor, then condensing it into another beaker.....

Answer 5

Boil the water away?? I don't know of any other way