Future pyrotechnician...? Or something. Location: Sydney, New South Wales, Austr...
Total posts: 111
Posted:Alrighty, I'm new here (hello) and I've been having issues with coloured salts. I've been experimenting in mostly very cold and not-as-cold situations, but I have used warming-baths to heat up the fuel to increase what it can dissolve.
Here's what happens for magnesium sulfate (epsom salts): Using methylated spirits, magnesium sulfate did not dissolve that much and left most of itself behind, the substance that might have been dissolved did nothing but make the flame a little bit hotter without giving any colours.
Here's what happens for copper sulfate (bluestone): Using two methods... 1. I tried dissolving the copper sulfate directly into the methylated spirits. It got very cloudy blue, then the copper settled onto the bottom and left a slightly blue methylated spirits behind. It burned with no colour difference. 2. I dissolved the copper sulfate into water, then poured it into the methylated spirits. It did not mix, as instead I had watery methylated spirits and the copper formed a blue rocky-cake-like substance at the bottom, and if the liquid was poured on organic materials (such as grass or cotton balls), it released a visible fume.
However, on both attempts there was the odd flash of the green flame. _____
So far, the only salt that has worked out was sodium chloride and that gives what kerosene does, but at a more expensive and complicated cost.
What am I doing wrong, or could do better, that could be stopping me from mixing my fuel with the colourant?
There's always room for 11 people in a two man tent Location: Hamilton, New Zealand
Total posts: 31
Firstly, I havent had any experience at all with coloured salts - wow does that instill you with confidence? - But i take it you are trying to colour your flame, no?
I can though suggest boric acid, which when mixed into the methylated spirits and lit, will burn a nice bright green and will look pretty nifty at night. The only problem with this is it leaves a filthy residue on your kevlar wicks, if thats what your using. I have some old staff ones that i converted for my coloured flame.
hope my rambling makes some sense, or is helpful in some way. Also, you can search the HOP forums for more information on coloured flames, as there is alot of info floating around out there