Yellow powder

From PyroGuide

Yellow Powder is a mixture of Potassium nitrate,Potassium carbonate and Sulfur. It has no apparent use in fireworks and should be made for educational reasons only.

Tutorial Take 20 parts of Potassium Carbonate and 10 parts of sulfur and melt it until a paste. Then let it solidify and add 30 parts of milled Potassium nitrate to the comp and mix it by diaper method. Besides the violent and unpredictable nature, the chronic hygroscopicity has the effect of making this substance unsuitable for firework manufacture.

Commonly found on less reputable internet websites and databases is a proposed method of manufacture involving three component melting. This method has been shown by experiments to very often detonate during this process. This is a good example of why, given the nature of explosives, one should be wary of trusting internet advice. Much of it is known to be false, and given the consequences of taking false advice. While the internet is an invaluable learning tool, Don't take what you read as true unless you have backed it up with a number of other sources, even though this will mean research will further delay your experimentation.

Composition