New Blue

[Ventsi]

I dried mine at about 250*F, for a about four hours, and the CB went from a light baby blue to a more dark, rich blue color, a pretty dramatic change. You might want to try taking a small sample and sticking it in the oven at that temperate for a few hours, you should see the CB drastically change color as it sheds water. It also might help with the yellow edges?

[FrankRizzo]

The yellow fringing that you're seeing is due to the carbon content of the parlon. If you use the 82/18 formula, the chlorine released from the AP is all that's necessary for a vivid blue.

 

A red fringing is normal for the formula; due to the formation of copper oxide in the flame envelope. You won't see it when the stars are flying through the air.

Edited July 20, 2010 by FrankRizzo

[Dr Boom]

Frank, dunno about the parlon- my non- donor samples show the same flame edge... I'm starting to think my "distilled" water from the store wasn't wasn't exactly distilled. And you are totally right about the blue at a distance, can't see it at all and the saturation is still excellent.

 

82/18 ratio? so much AP? My snapshot from the above post is 2:1- doesn't take THAT much CuBenz to get the color eh? I'll try a 4:1 mix next once my oven batch dries.

 

Ventsi, I'm trying that longer drying time + a bit higher temp and I can already see a difference. MUCH deeper blue.... I'll take a picture of the tray once it's dry and get a weight of the yield. I was surprised by the amount of water this stuff holds! Rediculious! I thought my end amount was better but after looking in the oven I'm thinking not so much.

Edited July 20, 2010 by Dr Boom

[Mumbles]

I seem to recall that the 82:18 ratio was stoichiometric. The crystal is known to have 3 waters per two copper units.

[FrankRizzo]

Doc,

 

You can try other ratios, but 82:18 was found to give the largest flame envelope, with good color saturation and burn speed.

[Pyroflash]

Hey everybody!

Is there anyone who tried and can share with us any good Blue & Aqua Flash composition based on Potassium Perchlorate ? 🙏😊

[cmjlab]

I have not tried blue or aqua flash, but I have tried red and green from the Westech Manual. Both red and green work, but look best from a distance. I believe their is also a blue in the manual, you might start there - it is Perchlorate based.

[Pyroflash]

Good ✌

By any chance,can you post me the link of this manual?

[cmjlab]

If you are able to find a copy for sale, and do try to make it, please ensure you take appropriate safety precautions (respirator, gloves, hygiene) in handling the Paris Green as it's a toxic chemical.