Flash Powder





Introduction: Flash Powder

About: Working wireless-ly.

Flash powder is the universal composition for almost all pyrotechnic reports. Bottle rockets, thunderbombs, m-80's, shells, everything. If it is not enclosed in a container then a bright flash along with a lot of smoke will be produced as shown in the picture. If it is enclosed in a container, even the smallest amounts will produce a loud report and a violent explosion.
If you are going to use this to make fireworks please note that fireworks must be legal in your state, you might need some sort of license, and that you can use no more then 50 milligrams per firecracker ANYWHERE no exceptions. Any firework that contains more then 50 milligrams is illegal in every state.
Flash powder was originally used for producing light for cameras about 100 years ago. You have probably seen something to this extent where a photographer holds a wooden handle with a flat platform on top, says look at the birdy, and poof he ignites the flash powder.
There are many different formulas for flash powder, I will explain the simplest one with the easiest chemicals to get your hands on.

Step 1: Chemicals

The simplest formula for flash powder has only 2 components.

400-600 mesh aluminum powder. The mesh refers to the size of the particles in the powder, it may also be referred to by its actual particle size in microns. For micron size the smaller the number the smaller the particle, for mesh size the higher the number the smaller the particle. A general rule of thumb - the smaller the particle the better. Can be bought on e-bay.

Potassium perchlorate - it is the oxidizer in the reaction. It is getting harder and harder to come by, the CPSC is trying to outlaw many different chemicals, and potassium perchlorate is high on their priority list. As of this writing it can still be bought on unitednuclear.com.

Step 2: Mix

Always mix chemicals by their weight. The ratio for the flash powder formula is:

Aluminum powder 30%
Potassium perchlorate 70%

Before you start measuring out the chemicals, it is good practice to neutralize your environment by spraying some anti-static spray around where you will be working. It can be made easily by mixing 1 part fabric softener to 9 parts water and putting it in a spray bottle.

Using the ratio, measure out how much aluminum powder you will use and put it in a plastic ziplock bag (spray the bag with anti-static also) Then measure out how much potassium perchlorate you will use and put it in the bag. Seal the bag and gently shake it around until the chemicals are evenly mixed.

Once the flash powder is mixed do not seal it in any form of container, this will lessen the risk of an accidental explosion.
Do not store the flash powder only make what you are going to use.

Step 3: Use

Place a small amount of flash powder on the ground outside. Make sure the area is clear of any thing that can catch on fire, or any loose objects.
Insert a 10 in. long fuse into the pile. (Instructions for fuse here https://www.instructables.com/id/E9ZBOE35P9EPA8KZXX/ )
Light and stand back. When the fuse ignites the flash powder a bright flash and pfft sound will be given off.
A large cloud of smoke will also be produced.

I know its hypocritical for me to say this but: Please be satisfied with that and do not make fireworks.

I have the experience to do these things safely, no matter how dangerous I make it seem in videos or photos. I know exact burning rates of all the fuse I use, proper amount's of powder to use, and proper containers to use, etc. So please don't try to make fireworks unless you know what you are doing.



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    Is this the sort of flash powder that would have been used by 1900's era photographers? I am looking for max flash with minimal bang, smoke, etc.

    I live in Canada and united nuclear/skylighter.com don't deliver there and I can't find stump remover PLEASE HELP MEEEEEEE!!!!

    17 replies

    I NEED HELP TOO! Live in BC, and can't find any suppliers.

    look at what i said to bigcheeze

    you can get most of what you need at Buckerfields, stump remover is salt-peter and for stuff like Al-powder we have Compounding Pharmacy. just google fertilizer stores and compounding pharmacist in you aria.

    late reaction but to make aluminum powder u just blend up tin foil until it is extremly fine and then to make potassium perchlorate pretty much in short mix matches with boiling water put through coffee filter mix with some boiled down hydrogen peroxide and small amount of ammonia based cleaner........ (that was the short version) look it up on youtube it is pretty easy

    Saltpetre in a healthfood store or pharmacy? thats where I got mine... also i think ebay sells it.

    well..I can't find it so there! and saltpeter is my second choice.

    is Saltpeter solid Potassium perchlorate or do you have to remove other stuff from it?

    no potassium perchlorate is totally different from saltpeter(potassium nitrate),there both oxidizers only differences are the chemical makeup and saltpeter leaves a bit of residue (molten salt)but solidifies in seconds

    but it will work just as well as the Potassium perchlorate.

    no where near the same thing salt petre to potassium perchlorate is a fire cracker to a stick of dynomite.perchlorate is a much much much stronger oxidizer

    go to lowes or home depot or walmart and buy spectricide brand stump remover over 97% kno3 grants stump remover works well 2

    but spectricide stump remover is liquid. does that matter?

    what pharmacy did you you find it at?

    were in Canada do you live?


    I have been having trouble finding Potassium perchlorate but i have loads of KNO3 for making smoke bombs. would it still work well if i replaced the Potassium perchlorate with KNO3??