# Separate NaClo3 from NaCL by melting

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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 ?????

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

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

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plenty big enough.

solubility: g/100ml water @ 20c

NaCl = 35.9

NaClO3 = 95.9

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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

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Personally Id turn it into the K salt, its Very easy to purify it That way

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thnx alot

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

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

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why must there be no sodium present for Pyro ??

does the sodium flood the colour with yellow!!

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

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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

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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?

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