How to make a gas cylinder? /kloc-how much medicine should I put in a 0/00 ml bottle? With anhydrous ethanol?

material

2.5g of potassium nitrate, 2.5g of ammonium chloride, 33mL of distilled water at room temperature, 40mL of alcohol and powdered natural camphor 10g.

step

1. Dissolve potassium nitrate and ammonium chloride in water.

2. Dissolve camphor in alcohol

3. Add the solution of step 1 into the solution of step 2, preferably heating and stirring until it is clear, and the temperature is 30-40 degrees.

4. After mixing, seal it in a test tube or glass container (the bottle must be sealed to avoid alcohol volatilization).

Note: when heating, it is best to heat from water, and every step needs heating. If the two solutions are heated and mixed, they should be sealed after cooling, otherwise the water vapor generated by cooling will change the air pressure and the bottle will crack! If you want a lot of crystallization, you can add a little more distilled water, but not too much. Just buy distilled water in the supermarket! But pay attention to alcohol volatilization when opening a bottle and adding water!

Matters needing attention

Wear gloves all the time.

Please keep out of direct sunlight.

Avoid putting it in the air outlet of air conditioner.

The crystal is stable and adapts to the environmental needs 1-2 weeks (the crystal will appear above the bottle at first, waiting for precipitation).

Mothballs are generally synthetic, so it is best to find natural ones in the experiment.

The alcohol concentration of ethanol seems to be 95% (common in the market) and 99.9% (the purest alcohol used in the laboratory). Alcohol concentration will affect the final crystallization result, so you can try it yourself.

Adding distilled water can increase the amount of crystallization, but it is best to experiment several times to master how much crystallization you want to increase, and the beauty of crystallization can only be seen where there is a transparent solution.

When choosing glass bottle caps, please try to avoid iron, copper and other covers, which will corrode.

But I want to tell you ~ don't hold your hopes too high, just make an ornament ~