About RP

I've been searching and reading everything i could find. Yet I have had no luck finding a recipe to remove the RP from matchbooks. Ive searched here, and google, and read damn near everything on rhodium.

....and Iodine

How would one go about obtaining some iodine crystals. I read that Iodine Tincture is available in 1 gallon quantities at a farm and ranch store. IS this the most recent way of obtaining the Iodine crystals. Also, if this is, do you have any troubles buying it?

go back to rhodiums chemistry page--near the bottom youll find a heading " precursors and reagents" under that youll find a sub heading "inorganic" in that list youll find "red phosphorous from matchbook strikers"--comprehensive article on what to do good luck

thanks, i found a good recipe a couple pages into the forum on the rp.

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Use per liter of 7% tinc 25 ml HCl (37%) (not critical, use some, use enough, a little more will not hurt.) add 500 ml water, add with stirring, one liter 3% H2O2

Or since you are american, a pint of tinc, a pint of peroxide, a cup of water and a shot glass of acid. Stir well, let it sit. Let it sit. Give it four hours at least.

Decant the fluid into another jar and rinse out the crystals in the bottom of the first jar real well, 5-6 times with lots of swirling. I filter through a piece of bedsheet and get all the crystals in there and mash real well, dry good, transfer to fresh coffee filters, put in a jar that has epsoms salts (dried) in the bottom, put a folder paper towel in, the sit the crystals on top. Try to dry the crystals as best you can to start..but come back and change the coffee filters after about four hours, the next day, etc...after two changes, the I2 is generally dry. If you react them still wet, use 1.5 gm instead of 1.2 and decrease the water in the reaction by 20%.

Leave the solution in the second jar, add about another 125 ml of peroxide and let sit until the next day. You will get another batch of crystals, up to 25% as much as before, usally about 10%.

Works fine. On a good batch you can get up to 50 gm of I2 from a pint. Usually you will get 43-46 gms. A lot better than the one ounce I used to get with three bottles of peroxide.



copied from a thread in this forum

the above method of iodine extraction is known as Geez`s method. so figured one should give credit where credit is due.

Thanks Geez for the simple easy method

oh and also... 7%iodine tincture can be had at your local feed and supply store. read the label. you dont want any that has povidone as an ingrediant. SWIM picked up 4 pints on tuesday. it was on a regular shelf with the horse supplys not behind the counter and shit. noone asked SWIM what he wanted it for in fact no reference at all was made at the register all SWIM was asked was, "is that all for you today" and "would you like a bag" here is what the label said on said bottles.

Strong Iodine Tincture 7%

Antiseptic/Disinfectant for disinfection of superficial wounds, cuts, insect bites, and more. www.durvet.com (http://www.durvet.com)

on back of label:

store in controlled room temperature between 15 and 30 C (59-86 F)keep tightly closed, protect from light.

Contains:

iodine.........7%

isopropyl alcohol......80%

water..........13%

cost:

8.29 per pint

[This message has been edited by Wicked_Rain (edited 08-01-2003).]