Troubleshooting My Homemade Smoke Bombs

AI Thread Summary
The discussion revolves around the process of making smoke bombs using potassium nitrate, sugar, and baking soda. The user experienced a long drying time for the first batch, which produced a satisfactory amount of smoke. In the second batch, they used a homemade potassium nitrate, dried it in the oven, and omitted baking soda, resulting in a mixture that did not fully congeal. Upon ignition, this mixture produced significant smoke but also caught fire. The user seeks advice on what might have gone wrong in the second attempt. However, the forum guidelines indicate that discussions on pyrotechnics are not permitted.
Neptune2235
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Hi,

Recently, I made a batch of smoke bombs using potassium nitrate, sugar, and baking soda (to regulate reaction speed). My first batch took about four days to dry which seemed odd, however, they produced a fair amount of smoke. For my second batch, I decided to put the potassium nitrate I synthesized from ammonium nitrate and potassium chloride (not the purest form of potassium nitrate, but it's all I had :/) into the oven on low heat to completely dry it out. After about ten-fifteen minutes the KNO3 was dry and I mixed it together with sugar (omitting the baking soda this time), however, the mixture never fully congealed. When ignited, the semi-congealed mass produced a fairly large amount of smoke and then caught fire. Can anyone tell me what I did wrong?
 
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Sorry, we don't discuss pyrotechnics here.
 
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