Virtual demonstration

Casein paint

Add the caustic agent to the casein. You will probably notice a bit of heat and the formation of bubbles, which is normal. In fact, milk casein is a protein which isn't soluble in water unless you add a caustic reagent to it. It is the chemical reaction between the caustic agent and the casein that creates the heat and the bubles.s

After this step, let the mixture rest until the casein is totally dissolved. If you are using ammonium carbonate wait approximately 4 hours, if you are using lime it will take about 12 hours.

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