Dissolving caffeine in room temperature water

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Dissolving caffeine in water can be challenging, especially when attempting to mix 500mg in 10ml, as it often turns into a paste upon cooling. Heating the water initially helps, but the caffeine reverts to a paste as the solution cools. To improve solubility, using carbonated water is suggested, as its acidity can help ionize caffeine and enhance its solubility. Additionally, researching the solubility of caffeine at different temperatures may provide further insights. Exploring these methods can lead to a more successful dissolution of caffeine in water.
gregor_rdt
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Hello everyone,

I have been trying to dissolve caffeine in water for a few days now.
I am trying to dissolve approx. 500mg of caffeine in approx. 10ml of water, but I am encountering the problem that the solution turns into a paste. If I heat the water beforehand, the caffeine dissolves well at first, but then quickly turns back into a paste as soon as the solution cools down.
Are there any processes or substances that improve the solubility of caffeine in water?
I look forward to any answers. :)
 
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gregor_rdt said:
substances that improve the solubility of caffeine in water?
Have you tried directly searching for an answer? Such as search terms increasing solubility of caffeine in water? After, of course, finding the solubility of caffeine in water as a function of temperature.

At PF, we want to help you find answers after you have made your own attempt.
 
try using a carbonated water. It is acidic and will cause the basic caffeine to ionize and increase its solubility in water.
 

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