To make KNO3 from sodium nitrate fertilizer, You will need :
Nitrate of soda 16-0-0
Muriate of potash 60-0-0
Extract the potassium chloride from the muriate of potash by soaking it in an excess of warm water, Filter out the red material, Save the water and evaporate to obtain the crude KCL. (Takes a _long_ time at room temperature, Boil it down and crystallise in freezer or ice bath if your'e in a hurry.)

Step 2 : Add enough sodium nitrate to 1 liter of water to make a saturated solution. (No more will dissolve.)
Make a boiling, saturated solution of potassium chloride, And add to the sodium nitrate solution in heat resistant, referably nonmetal container. (Both must be boilng hot 100 deg C 212 eg. F)
Any crystals that appear while the solution is hot will be common salt, NaCl. let cool to room temperature Pour off the liquid, And place in a glass pan on a ice bath and chill to near freezing (0 deg, C, 32 deg. F). Stir occasionally to prevent the formation of large crystals. Allow several hours for the crystals to form, Then filter out the crystals and dry. Save the liquid for boiling down to get any leftover KNO3.

Boil the nitrate crystals in the smallest amount of distilled or rainwater that will dissolve the nitrate, And repeat the chilling and crystallisation process at least once.

Reaction: NaNo3 + KCl = NaNo3 + NaCl.

Simply boiing NaNo3 and KCL together and crystallising without stirring will produce a less pure product, In the form of needles clumped together.

From the Ravenswood AnArChy BBS Author :WyLdMAN. CB



[This message has been edited by crazedbytch (edited 29-10-2000).]

Sorry about the way the above post looks,I had to cram it a bit.

The required materials are getting harder to get, Thanks to the efforts by the KoNtRoL/OpPrEsSoR FoRcEs of The POWERS THAT BE.

This is all I have on the subject, Perhaps there's a chemist on the board who can offer advice/Improvements.

Later, CB