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Vlad
05-22-2009, 02:37 AM
This is a copy of Michael Burbury's list of metals he has processed through the HCl/H2O2 method to a white precipitate. It does not mean they are all m-state. Some metals might also yield toxic white hydroxide/oxide/chloride precipitates. However it could serve as an indicator and be useful.


>This is a list of elements I have worked with using
>the HCL/H2O2 method. Other elements I have worked with
>use different methods, which I will leave till later.
>I had to dig out all my notes and summarized them
>over the last few weeks below in numerical atomic
>weight order for easier reference.
>(Almost 2 years of notes in one page)
>
>*NOTE* processes vary slightly as I was not always
>looking to make something to consume as some cases
>I was more interested in any unusual properties.
>
>Name / Symbol / Element number
>
>1. Titanium (Ti) (22)
>Titanium oxide is a black powder, good to start with.
>Used a good amount of H2O2 over two days before
>digesting with salt for 2 days and then the pH swings.
>The Titanium precipitate was a greyish-white, would not
>disolve in 70% nitric acid, yet quite easilly
>disolved in grain alcohol. This was then allowed to
>evaporate and formed small tetrahedron shaped crystals.
>
>2. Vanadium (V) (23)
>Vanadium Pentoxide is an orange compound.
>Typically the chemistry to disolve would be
>described as:
>V2O5 + 6 HCl + 7 H2O -> 2 [VO(H2O)5]2+ + 4 Cl− + Cl2
>The chlorine gas is significant and was reduced
>outside into the solution.
>The Vandium precipitate had a tinge of blood red and
>looked quite strange, so was set aside for later.
>
>3. Chromium (Cr) (24)
>Chrome metal was the starting material. HCL has
>little effect on Chrome, so the H2O2 was liberally
>added. After disgesting with salt, the solution
>turned a beautiful emerald green and looked ready.
>However, the digestion should have perhaps been done
>longer as it took over 20 pH swings before obtaining
>a lusterous waxy white precipitate (it took ages...)
>
>4. Iron (Fe) (26)
>Iron oxide is black so I started with Magnetite (FeO3).
>This seemed to be a good choice as it disolved quite
>readilly and I was able to use a good amount of H2O2
>and get vigorous bubbling. I spent quite some time
>with the H2O2 to get the solution a nice redish brown.
>Digestion with salt again took quite some time and
>eventually turned smokey orange. Performed several pH
>swings and eventually got a dull white precipitate.
>
>5. Cobat (Co) (27)
>Cobalt Oxide (Co3O4) is used often in glass
>manufacturing and was the starting material.
>The HCL was solarised and warm for the process and
>disolved the Cobalt Oxide quite readilly with H2O2.
>The resultant precipitate was a creamy white after
>the first pH swing and becomes brighter after each
>swing thereafter. Was set aside for later processing.
>
>6. Nickel (Ni) (28)
>Nickel is used often in Electroplating, so the solid
>metal was the starting material. Nickel does not
>easilly disolve in HCL, so was a very good material
>to perform the H2O2 method with, though it took quite
>alot of H2O2 to etch all the Nickel into solution
>The resultant precipitate has a slight tinge of
>deep "saphire" blue throughout.
>
>7. Copper (Cu) (29)
>Copper metal is easy to obtain and was the starting
>material. This one is perhaps the most stubborn of
>all metals to work with. Copper oxide is often green
>and this is what usually results when doing the
>process. The H2O2 process works with a success rate
>of about 1 in 8 attempts (for me). The good result is
>a bright white precipitate with a slightly waxy sheen.
>
>8. Niobium (Nb) (41)
>Niobium oxide is used in the manufacture of camera
>lenses. Nb2O5 was the starting material and does
>not easilly disolve in HCL so was quite good to use,
>yet very expensive to purchase. I had a feeling this
>would be a good material for the protovoltaic cell
>since it is also used in ceramic capacitors. The
>resultant precipitate was very light and almost
>fluroescent white. Did not exhibit much
>protovoltaic activity after crystalization.
>
>9. Molybdenum (Mo) (42)
>Back to the drawing board on this one, the material
>I started with did not contain molybdenum...
>I used silver Australian coins after someone told
>me they were molybdenum, but found out they are
>actually 28% copper, 72% nickel. However, the coins
>were still very easy to convert and produced an
>almost pure white precipitate that I do quite
>enjoy. I still do this one often as it is easy, the
>metal is everywhere and has a "vitality" effect
>which is difficult to explain. If someone was to
>start learning the HCL/H2O2 process, I can say that
>starting with coins is about the easiest of them all.
>(Which is strange as copper is the hardest)
>
>10. Ruthenium (Ru) (44)
>Ruthenium Oxide is black and used for electrolytics
>in resistors and was the starting material. It does
>not disolve in HCL so is a good material to use with
>this process. Took significant amounts of H2O2 and
>produced alot of chlorine gas. Eventually, the
>precipitate came out with a slight tinge of pink.
>
>11. Rhodium (Rh) (45)
>Rhodium Oxide is black and was the starting material.
>Took quite a bit of H2O2 before it even started to
>react and etch away. I continued with the H2O2 over
>a period of 3 days and brought the pH up slowly to
>obtain a slightly grey precipitate. Removed the
>solution over the precipitate and added fresh HCL,
>then went at it more with H2O2 until I obtained
>a slightly smokey solution. Then brought the pH up
>slowly and the precipitate was a bright white.
>Performed 7 pH swings, digesting with salt between
>each swing and the white precipitate became quite
>fluorescent bright white (almost glows).
>
>12. Palladium (Pd) (46)
>Palladium Oxide is black and was the starting material.
>Does not disolve in HCL and took alot of H2O2 to get
>it etching into the solution. In fact this one took
>almost 2 weeks of adding H2O2 before it all disolved.
>Eventually obtained a fluorescent white precipitate
>that has a slight waxy look and takes a very long
>time to settle on pH swings. The precipitate likes
>to rise to the top of the solution quite often and
>takes a lot of time to settle.
>
>13. Silver (Ag) (47)
>I have used both silver metal and the black silver
>oxide in this process. This is a good one to start
>with if learning the HCL/H2O2 procedure as it is
>easy to do without drawbacks very often. The
>precipitate needs to be a bright white, if any
>black spots are in there, start again.
>The Ormus silver has a very slight tinge of yellow.
>
>14. Tin (Sn) (50)
>Tin metal does slightly disolve in HCL and etches
>quite quickly with H2O2. The first precipitate is
>a bright white, but after 7 pH swings and digesting
>with salt, it ends up with a sky blue tinge.
>
>15. Antimony (Sb) (51)
>Difficult to work with and took alot of H2O2 to
>get it all etched into the solution. Digested with
>salt for several days before it turned a smokey
>yellow and then brought the pH up and had black
>spots all throughout. Removed precipitate and
>used fresh solarised HCL and more H2O2 over a
>period of a week or more to really break it up.
>Then disgested with salt on a moderate heat for
>a few days before it turned Orange. Performed
>about 12 or 14 pH swings, digesting with salt
>between each swing and eventually ended up with
>a slightly greyish white precipitate.
>
>16. Neodymium (Nd) (60)
>Neodymium oxide is easy to obtain and is a white
>powder. This was the starting material which
>slightly disolved in HCL and etches quickly with
>the H2O2. Kept up the H2O2 over a period of 3
>days to be sure it was fully broken up into
>solution as it is difficult to tell. Disgested
>with a little salt at 37Deg C for a period of 7
>days upon which it turned a nice violet color.
>After 12 or more pH swings and digesting with
>salt at 37Deg for a day between each swing, I
>ended up with a fluorescent white precipiate
>that had a slight tinge of violet still.
>
>17. Samarium (Sm) (62)
>Obtained the Samarium oxide from:

><http://www.advancedmaterials.us/62R-0801.htm>http://www.advancedmaterials.us/6\
2R-0801.htm
>It had a slight pink tinge to the white powder
>when it arrived, but seemed quite good for the
>HCL/H2O2 process. After the first salt digestion
>it turned a nice blueish color and eventually
>after the pH swings and salt digestion, I
>obtained a white precipitate with an aqua tinge.
>
>18. Tungsten (W) (74)
>Tungsten Oxide is a yellowish powder used for
>pigments in ceramics and was easilly obtained.
>After the HCL/H2O2 over a period of several hours
>the solution turned a light green. Digested with
>salt for a period of 3 hours at 37Deg upon which
>a light orange color formed. pH was raised slowly
>over several hours and formed a white precipitate
>with a slight red tinge. Did not proceed further.
>
>19. Iridium (Ir) (77)
>Easy to obtain the metal and does not disolve well
>in strong solarised HCL. Took a fair amount of H2O2
>at the beginning, but less was needed as time
>progressed to keep the etching going. Once it was
>all disolved, the solution was a smokey light grey.
>Digested with salt for about 5 days without much
>change to the look of the solution. pH was raised
>and a white precipitate formed. I separated this
>precipitate, disolved as much as I could in
>diethyl ether and allowed to evaporate and
>crystalise. The crystals were strange star like
>rods sticking out in all directions. Put aside
>for further reduction at a later time.
>
>20. Platinum (Pt) (78)
>White gold, quite easy to obtain but also quite
>expensive, so only a small amount was done. The
>process went like clock work and really only took
>a few days to complete. Ended up with a very small
>amount of precipitate that was fluroescent white
>with what appears to be a waxy coating until you
>touch it, after which the sheen seems to dull.
>
>21. Gold (Au) (79)
>Quite easy to obtain gold metal and this one
>is also quite easy to work with. It does take
>quite a bit more H2O2 than I was expecting to
>get it all to disolve and after the first
>digestion with salt, turned a nice emerald green.
>The resulting precipitate is bright fluorescent white.
>
>22. Lead (Pb) (82)
>Horrible stuff, do not recommend it to anyone. It
>took a lot of work over a long period of time to
>eventually obtain a very small amount of precipitate
>that still had a slightly yellow tinge. I disolved in
>diethyl ether and allowed the alcohol to evaporate
>leaving small white crystals that formed in a dual
>tetrahedron. Quite a bit of the precipitate did not
>disolve in the alcohol, so I put it aside for later
>investigation.
>
>23. Bismuth (Bi) (83)
>Bizmuth is unique and seems to work quite well with
>the HCL/H2O2 process. The metal was not too difficult
>to obtain and does not disolve in HCL, so etching
>away with the H2O2 took a long time but ended up
>being a nice greenish yellow solution. Then after
>digesting with salt for about a week, turned
>almost bright orange like Fanta. Raised up the pH
>slowly and the precipitate came out with a slight
>tinge of red, but after about 8 pH swings and
>digesting with salt at 37Deg for a day between each
>pH swing, it eventually came out bright white.
>Bizmuth is a very strong diamagnetic material, but
>after this process, it did not seem to be afected
>at all by magnetic fields, it even had a slight
>attraction, which was not expected at all.
>
>That is all I could find in my notes for now and there
>is still quite alot to be done.
>
>Best Wishes,
>
>Michael Burbury

Added in a later post:

>Osmium (a very difficult one to get your hands on though this supplier
>is able to provide it -
<http://www.pm-connect.com/>http://www.pm-connect.com/) This one is quite
>highly reactive and great care should be taken with the addition of
>the H2O2, it gets hot very quickly. However, with perseverance, its
>white powder will dissolve in the di-ethyl alcohol about 1 in 8 attempts.
>
>Mercury (also quite a difficult one to get your hands on, though I
>found an old Army disposal store that still sells the old Mercury
>Thermometers. Again it takes a very long time to break down with the
>H2O2 and I would generally do it in very small amounts. However, at
>least 1 in 3 attempts are successful at getting its white powder to
>dissolve in the di-ethyl alcohol).