#6,717 in Health & Personal Care
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Reddit mentions of Potassium Iodide, High Purity Crystals/Granules,100 Grams (3.5 oz.)
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Reddit mentions: 1
We found 1 Reddit mentions of Potassium Iodide, High Purity Crystals/Granules,100 Grams (3.5 oz.). Here are the top ones.
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- Source - Made in the USA
- Packaging - Packaging May Vary
- Package weight of the Product: 1.59 Ounces
- Package Dimensions: 2 inch L x 2 inch W x 3 inch H
Features:
Specs:
Height | 3 Inches |
Length | 2 Inches |
Weight | 0.3125 Pounds |
Width | 2 Inches |
Explosive Elephant Toothpaste!! edited to correct ingredient - and update notes
My goal was big, shooting foam steams! I tried other methods and recipes - but this worked best!
What is happening in elephant toothpaste: hydrogen peroxide is made up of two hydrogen and two oxygen molecules. This is one extra oxygen molecule than water. Hydrogen peroxide is very unstable; it keeps wanting to lose that extra oxygen molecule. In this experiment, we use potassium iodide as a catalyst to knock off that extra oxygen molecule very quickly, and soap to capture those molecules of oxygen in foam.
I tried this with two different flask types: 2L Erlenmeyer flask and 2L graduated cylinder.
For each flask I needed the following:
To get (my best approximation of) 4 molar KI, I put 35 mg of nearly-pure granular KI in a small glass measuring beaker, and filled it to 50 ml with cool tap water.
If you use smaller flasks, you will need to cut the ingredients by about 1/2.
I was able to buy the chemicals and all the flasks online. Please be careful with the hydrogen peroxide – it will burn your skin at this concentration.
The result is soapy water - but there may be some residual hydrogen peroxide. Simply rinsing the area well should be sufficient.
Steps:
Pre-make the KI solution, and measure out all other chemicals.
USING GLOVES AND EYE PROTECTION
-- Put 250ml H2O2 in each flask
-- Put ~25-30 ml of dish soap in each flask
-- Add a few drops food coloring of color desired (complicates clean-up - be warned!)
-- QUICKLY add 50 ml KI solution to each flask and jump back!
Notes:
The graduated cylinder produces a thick pillar of foam, the Erlenmeyer flask produces more of a jet.
The chemicals should be added by an adult.
If you film this, be sure to have the person filming stand back, and be prepared to capture an 8 to 10 foot jet coming out of the flask.
Shopping list (what I used):
This puts out a thick column of foam:
213I16 Karter Scientific 2000ml Glass Graduated Cylinder, Single Metric Scale https://www.amazon.com/dp/B006UKIBKU/ref=cm_sw_r_cp_api_8OuWxbG8YRB8N
This puts out a narrow/taller jet of foam - I now have three:
2000ml / 2L Narrow Mouth Erlenmeyer Flask with Heavy Duty Rim https://www.amazon.com/dp/B00Q34D0HC/ref=cm_sw_r_cp_api_rQuWxb4708ZVJ
Pure Health Discounts Certified 35% Hydrogen Peroxide with 1 oz Bottle Dropper - 32 oz https://www.amazon.com/dp/B01AKIGJW4/ref=cm_sw_r_cp_api_YD4pzbZTGXC86
Potassium Iodide, High Purity Crystals, 99.8 % min., 100 grams https://www.amazon.com/dp/B008D8161I/ref=cm_sw_r_cp_api_PTuWxb0N94SZQ
Atlas Glove 620 Atlas Vinylove 12" Double Dipped Gloves - Small (they come in different sizes) https://www.amazon.com/dp/B002PJ0WRK/ref=cm_sw_r_cp_api_nUuWxbSQCV77N
Learning Resources Primary Science Safety Glasses (good size for kids) https://www.amazon.com/dp/B006ZLSWFI/ref=cm_sw_r_cp_api_SVuWxbBKKKD9R
Heathrow Scientific HD15909 Spatula with Flat End and Spoon End, 9" Overall Length (optional - but good for mixing the potassium iodide) https://www.amazon.com/dp/B0061OT1A4/ref=cm_sw_r_cp_api_qSuWxbA6R27C3