Separate NaClo3 from NaCL by melting

[person]

i was wondering if there was a way to seporate sodium chlorate i made from the leftover salt by the big melting point difference in the two substances:rolleyes:

 

concidering that;

 

1) would the chlorate decompose

2) how would i filter the solid out

3) is there a way to stop the chlorate from decomposing

 

Any idea ?????

[YT2095]

heating is Not the answer, you`r better off with fractional crystalisation(s), and then follow it up with silver or lead nitrate to PPT out the Chloride.

[person]

is there a big enough differance in solubility to use "fractional crystalisation" ? and secondly i dont realy have acess to Pb or Au -NO3

[YT2095]

plenty big enough.

solubility: g/100ml water @ 20c

 

NaCl = 35.9

NaClO3 = 95.9

[John Cuthber]

Perhaps more useful to know is the variation of the solubility with temperature.

At 0 C the solubilities are 37.5 and 79 g/100 ml

At 100C they are 39.12 and 230 g/100 ml

[YT2095]

Personally I`d turn it into the K salt, it`s Very easy to purify it That way

[person]

thnx alot

i have KCl now so i will just make KClO3 and filter that out!!

[YT2095]

you`ll need to wash it a few times and put it in the fridge to get the best yield, but it`s Quite doable, and is even good for Pyro grade KClO3! so there has to be little to no sodium contamination.

[person]

why must there be no sodium present for Pyro ??

does the sodium flood the colour with yellow!!

[YT2095]

yup, and it takes very few sodium ions to wash out the color too, it`s also very hygroscopic making it impractical for use.

[person]

can i add Cu salts to gunpowder to make the flames Blue or lithium for red ??

 

can i make gunpowder with KClO3 minus the sulfur i know

[StevenRS]

I think that the luminous carbon would wash out any other color. There are many dedicated color compositions, most using a metal powder and a metal nitrate for color, like strontium nitrate and aluminum powder.

 

Maybe you could color chlorate/sugar mix with a salt?