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symboom
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[*] posted on 9-3-2017 at 02:48
Copper Peroxide


Copper Peroxide synthesis

Reagents needed

Copper sulfate
Ammonium hydroxide
Hydrogen peroxide


I have performed this reaction discoved this compound by accident was trying to form copper nitrite didnt work from the reaction of ammonia and hydrogen peroxide but something interesting formed copper peroxide
Not sure how it compares to zinc peroxide

The procedure is here https://en.m.wikipedia.org/wiki/Copper_peroxide

I realized the strange percipitate was copper peroxide
When I saw the process to obtain copper peroxide was the same in what I did.

My procedure ammonium hydroxide is added to a copper sulfate solution till a percipirate forms then dissolves in excess ammonia solution forming copper complex then it is chilled to just above freezing
A chilled solution also slightly above freezing point of 3 percent hydrogen peroxide once both solutions were chilled the hydrogen peroxide is added to the copper complex a percipitate of copper peroxide is formed it is unstable in aqueous solution and must be filtered immediately and dried
Once the solution reaches room temperature you can see the precipitate start to disappear

This is a little tricky procedure once cold not too difficult
Percipitate does form fast.
Solutions are more stable when chilled near freezing
The percipitate disappears when it gets too warm
it reacts with water slowly.

Note from wikipedia
When wet, copper peroxide readily decomposes at temperatures above 6°C; it "is far more stable when dry".
Ive had it around dry very stable.

[Edited on 9-3-2017 by symboom]
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PHILOU Zrealone
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[*] posted on 9-3-2017 at 06:13


What can it be useful for except very dangerous boosted thermite analog of the powerful explosive Al/CuO?
--> Al/CuO2?

Maybe as dangerous catalyst and oxygen carrier for unsensitive HE or Explosive compositions?

Do you have something else into mind?

[Edited on 9-3-2017 by PHILOU Zrealone]




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[*] posted on 9-3-2017 at 20:22


That was the first one I thought of first didnt bother trying it
Sugar and copper peroxide reaction
Copper peroxide substituted for chlorate


zinc and copper peroxide reaction
Is one reaction that comes to mind


Negative x
Modified composition

Interesting is if It could be added to make an energetic which is normally insensitive more sensitive to reactions I think I read where hydrogen peroxide does this in some mixes

Have the synthysis down just need a use for it

[Edited on 10-3-2017 by symboom]

[Edited on 10-3-2017 by symboom]
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[*] posted on 10-3-2017 at 00:42


I was trying to make copper peroxide too until i ran out of ammonia but i tried
reacting copper hydroxide with ice-cold hydrogen peroxide.

I just added the copper hydroxide to the hydrogen peroxide and immidetly vacuum filtered. I tried reacting it with sugar while it was still moist but there was next to no reaction. It did give a yellow green streak when i tried too crush it and it was significantly harder then the starting copper hydroxide similar too how sinc peroxide produced from zinc oxide also forms harder large chunks.

I was going to try mixing it with copper acetylide for that double copper goodness but it might be a bit too unstable.

EDIT: Found some ammonia and tried it. Please dont use 12% hydrogen peroxide or higher... Got a nice Foomphh and everything is everywhere. Im so stupid.

[Edited on 10-3-2017 by Σldritch]
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[*] posted on 15-6-2017 at 03:13


Cold cold cold or frozen im trying freezing both solutions to form a slush yes this is overkill but alot more forms
My best results were from freezing the tetraamine copper sulfate and the 3% hydrogen peroxide and breaking up the ice into an ice slush.

then mix see if I catch a glimpse of green copper peroxide as temperature increases and the reaction starts and then a little bubbling happens then as it melts more the bubbling becomes more vigorous you with know it is cold enough because a green brown percipitate inly forms when the temperature is low enough

The reaction melts the icefast the bubbles are from the copper peroxide decomposing althouth it seemed like it was the peroxide decomposing more because the color did not seem to change filtering it is a terrable
it goes through coffee filters and some stays behind wow is copper peroxide sensitive to temperature turns from tetramine copper sulfate color to dark green to brown this reaction would be great in the dead of a frozen winter
Sidenote concentrated peroxide is not really needed it may be worse because it reacts very fast although if you freeze it it might react slow enough


IMG_20170615_033541.jpg - 3MB

IMG_20170615_220122.jpg - 2.5MB IMG_20170616_000023.jpg - 2.5MB

IMG_20170615_222751.jpg - 2.9MB IMG_20170615_034003.jpg - 2.5MB

I hope these photos also help anyone trying this.
The color that is stated is hard to tell looks dark green and sometimes brown.
Was fine underwater for a day at room temperature
Definatly dark green it turned brown on the paper plate it seems no bubbles but it did seem to react due to color change dont let fully dry on paper plate

Next is testing it decomposition temp
And mixing with a suitable fuel and aluminum and copper peroxide does not seam like a good Idea
I have zinc/titanium
Maybe try sugar or stronger deoxidizer vitamin c any suggestions I have around 2 grams

[Edited on 16-6-2017 by symboom]

[Edited on 16-6-2017 by symboom]




Natures Intellectual Organic Peroxide. >>Ascaridole <<

Oxone
Used for the production of --> CH2O/Cl2/ClO2/Br2/I2

------------------------------------->>Hydrogen Peroxide << -------------------------------------------- >> Acetylene <<
Peroxide Salts
Zinc Peroxide <\> Copper Peroxide <\>Silver Peroxide <\>Lithium Peroxide <\>Magnesium Peroxide <\>Calcium Peroxide to Calcium Superoxide
CoO2. \\ NiO2 \\ Ti/V/Cr peroxy complex \\ Triamine chromium peroxide \\ LiH \\SiO2-H2SO4 (SSA) \\ [Ni(NH3)6]

Exotic reducing agents
Ga2O TiCl2 GeCl2 && Na2S2O4
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[*] posted on 17-6-2017 at 03:46


Defiantly works sensitive to heat releases lots of oxygen I should have made more this chemical is very interesting dark olive green dont let it dry out on paper plate lost a lot of it
Its not extremely sensitive I still had some left the color can be confusing though it looks brown so at times I thought I ruined it
Sounds like chlorate heated a small sample and a whoosh sound is heared with the powder poping out as it is heated
This chemical might actually be a powerful oxidizer.

Looking forward to others reproducing this chemical

[Edited on 17-6-2017 by symboom]

[Edited on 17-6-2017 by symboom]




Natures Intellectual Organic Peroxide. >>Ascaridole <<

Oxone
Used for the production of --> CH2O/Cl2/ClO2/Br2/I2

------------------------------------->>Hydrogen Peroxide << -------------------------------------------- >> Acetylene <<
Peroxide Salts
Zinc Peroxide <\> Copper Peroxide <\>Silver Peroxide <\>Lithium Peroxide <\>Magnesium Peroxide <\>Calcium Peroxide to Calcium Superoxide
CoO2. \\ NiO2 \\ Ti/V/Cr peroxy complex \\ Triamine chromium peroxide \\ LiH \\SiO2-H2SO4 (SSA) \\ [Ni(NH3)6]

Exotic reducing agents
Ga2O TiCl2 GeCl2 && Na2S2O4
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symboom
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[*] posted on 18-6-2017 at 16:59


Sorry for the tripple post but I think I figured out a method that works urea peroxide adduct it seems to work although the problems 3% peroxide is so dilute it works but so little product
And the more concentrated stuff bubbles alot it is annoying also need to try glow stick peroxide




Natures Intellectual Organic Peroxide. >>Ascaridole <<

Oxone
Used for the production of --> CH2O/Cl2/ClO2/Br2/I2

------------------------------------->>Hydrogen Peroxide << -------------------------------------------- >> Acetylene <<
Peroxide Salts
Zinc Peroxide <\> Copper Peroxide <\>Silver Peroxide <\>Lithium Peroxide <\>Magnesium Peroxide <\>Calcium Peroxide to Calcium Superoxide
CoO2. \\ NiO2 \\ Ti/V/Cr peroxy complex \\ Triamine chromium peroxide \\ LiH \\SiO2-H2SO4 (SSA) \\ [Ni(NH3)6]

Exotic reducing agents
Ga2O TiCl2 GeCl2 && Na2S2O4
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[*] posted on 9-7-2017 at 09:59


Alright, my new hotplate broke so i had another go at copper peroxide or several and i managed to make a a very small amount.

It seems that the thing limiting yield most is the filtering since the precipitate from symbooms method is very small and clogs the filter.

Anyway acetone works great to dry it once the water is gone but do not be too hasty with it or the tetraamine copper sulfate will precipitate. Ill update with copper acetylide later.

UPDATE:

1:1 Cu2C2:CuO2 is more brisant than Cu2C2 as one would expect. Much smaller fireball and does not leave nearly as much soot/copper on paper as copper acetylide.

Both Copper Acetylide and 1:1 Copper Acetylide:Copper Peroxide were tried with 30mg on A4 paper.

I guess 1:1 Copper Acetylide:Copper Peroxide leaves less of a mark because all of the copper boils off and all of the carbon burns.



My ears hurt; i need to do 10mg next time...

[Edited on 10-7-2017 by Σldritch]
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[*] posted on 10-7-2017 at 02:10


Yes I had the same problem I goes right through filter paper the one experiment where a serious filter is needed I was thinking of cardboard as a filter material. so the slow filter paper size might help.
Problem: when making copper peroxide ultra fine filter paper is needed for copper peroxide maybe a hand centrifuge the solution does settle the top liquid blue and the bottom green as the percipitate settles.

Should have taken pictures showing it degrading in water
Going from dark green to light green I wonder what is happening conversion to Cu2O copper 1 oxide?? Im glad to see others interested in copper peroxide.

[Edited on 10-7-2017 by symboom]
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[*] posted on 10-7-2017 at 05:54


I think it would be a better idea to make it from copper hydroxide, which supposedly yields microscopic crystals, and then wash it with ammonia to get rid of the hydroxide/oxide impurities. Try making a fresh suspension from sodium hydroxide and copper sulfate. Ill try to make a reliable method similar to that later.

EDIT: The red oxide is copper (III) oxide. It is more prevalent in caustic suspensions. It will form in hydrogen peroxide and sodium cuprite. Much harder to isolate though i think since it needs a lot of base which is hard to get rid of due to viscosity, solubility and very low volatility

[Edited on 10-7-2017 by Σldritch]
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[*] posted on 10-7-2017 at 08:36


Quote: Originally posted by symboom  
Yes I had the same problem I goes right through filter paper the one experiment where a serious filter is needed I was thinking of cardboard as a filter material. so the slow filter paper size might help.
Problem: when making copper peroxide ultra fine filter paper is needed for copper peroxide maybe a hand centrifuge the solution does settle the top liquid blue and the bottom green as the percipitate settles.

Should have taken pictures showing it degrading in water
Going from dark green to light green I wonder what is happening conversion to Cu2O copper 1 oxide?? Im glad to see others interested in copper peroxide.

[Edited on 10-7-2017 by symboom]

Add cold methanol for two first pre-wash/sedimentation and a final wash/sedimentation with cold ether afterwards.
Why?
The introduction of methanol or ether will:
1°) reduce the density of the solvent hence increasing the density difference between sediment and solvent what will lead to a faster sedimentation speed.
2°) take rid of the water and allow for faster drying afterwards

Centrifuge is indeed most wanted if no filter paper is wished into the process...and to minimise the losses of ultra-fine precipitate particles.

What happens upon standing into water?
I don't think you'll get red Cu2O...only black/brown CuO should be forming.
What happens is probably the following:
Cupric oxyde or peroxyde hydrates to hydroxyde and generates some H2O2 and Cu(2+) aswel.

CuO (s) + H2O (l) <==> Cu(OH)2 (s)
Cu(OH)2 (s) <==water--> Cu(2+) + 2 OH(-)
CuO2 (s) + H2O (l) <==> Cu(OH)(OOH) (s)
Cu(OH)(OOH) (s) + H2O(l) <==> Cu(OH)2 (s) + H2O2 (l)
Cu(OH)(OOH) (s) <--==> Cu(OH)2 (s) + 1/2 O2 (g)

Those reactions are more than probable since CuO2 can be also prepared directly from CuO/H2O2 or Cu(OH)2/H2O2

Cu(2+) is known to decompose catalytically H2O2 into H2O and O2...
H2O2 <--Cu(2+)==> H2O + 1/2 O2




PH Z (PHILOU Zrealone)

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[*] posted on 10-7-2017 at 09:40


Quote: Originally posted by Σldritch  

UPDATE:

1:1 Cu2C2:CuO2 is more brisant than Cu2C2 as one would expect. Much smaller fireball and does not leave nearly as much soot/copper on paper as copper acetylide.

Both Copper Acetylide and 1:1 Copper Acetylide:Copper Peroxide were tried with 30mg on A4 paper.

I guess 1:1 Copper Acetylide:Copper Peroxide leaves less of a mark because all of the copper boils off and all of the carbon burns.


My ears hurt; i need to do 10mg next time...

[Edited on 10-7-2017 by Σldritch]

Some remarks...
1°) A tinier fireball would mean less power and lower heat of explosion...

2°)
MM CuO is 79,5 g/mol
MM CuO2 is 95,5 g/mol
MM Cu2C2 is 151.02 g/mol
Since the CuO2 is unpure...you have a mix of CuO (dead weight) and CuO2...

Thus with a 1/1 ratio by weight even if CuO2 was pure...you would be onto the negative OB side and "over-fueled".

3°)
Cu2C2 --> 2 Cu + 2 C + heat 1 (eq1)
Cu2C2 + 2 O --> 2 Cu + 2 CO + heat 2 (eq2)
Cu2C2 + 4 O --> 2 Cu + 2 CO2 + heat 3 (eq3)
Cu2C2 + 5 O --> Cu2O + 2 CO2 + heat 4 (eq 4)
Cu2C2 + 6 O --> 2 CuO + 2 CO2 + heat 5 (eq5)

Heats generated 5>4>3>2>1

CuO2 can only afword 1 oxygen atom and to fully burn Cu2C2 ... you must be into the conditions of eq3-eq4 or eq5.

Assuming pure CuO2 (otherwise following numbers must be even higher...) those equations means the following molar ratios Cu2C2/CuO2:
1/4 for eq3 (or 151,02 / 382 = 1/2,53 by weight)
1/5 for eq4 (or 151,02 / 477,5 = 1/3,162 bw)
1/6 for eq5 (or 151.02 / 573 = 1/3,794 bw)

Thus with a 1/1 ratio you are far from burning all the materials to gases and ashes...and your guess is thus simply wrong...

4°)
The boiling of Cu requires really a lot of heat (not reached here)...all the carbon can't burn because not overoxygenated mix...

The only explanation to observations are:
A) that the explosion is stronger...there is more heat and the gas expension propells the Cu dusts further (thus dilluting the spot)
B) that the flame is probably brighter and less yellow because more oxygen is available into the explosive stuff; thus the blast is faster and flame remanence is lower to the eyes.

5°)
Use ear-protections caps if you want to preserve your auditive abilities...and not become prematurely deaf...
30mg into a closed room is not friendly to eardrums nor to hair-cells (thus very bad hair conditionning :( :P )

6°)
The ultimate power mix is not a simple aftermath of the previously posted equations...and numbers...

Why?

Since you have to take into account the facts that:
a) Cu2C2 is a bad explosive primary - it contains a lot of dead weight (Cu is 84% of its mass) and it will be into the decomposition products as Cu, Cu2O or CuO...this will be heated and thus take a big deal of the explosion energy.
b) CuO2 is a bad non-explosive/explosive (?) oxydiser - it contains also a lot of dead weight (Cu is 66,5% of its mass) and it will be into the decomposition products as CuO (eventually Cu and CO if a lot of C is present)...this will be heated and, just like for the previous "a)" case, it will take a big deal of the explosion energy.

What is the point?
By increasing the amount of CuO2 you shift to a better OB balance and thus you get more energy out of the fuel...but at the same time you reduce the amount of fuel to put some oxydiser into the mix and you bring together a non negligible dead weight copper counterpart...This will be less critical if CuO2 is explosive too...but stil a non negligible effect.

==> This means that there must be a sweet optimum blast energy spot to find by experimental trial/errors variation (by slight incréments) of the mix ratio from 1/0,8 bw to 1/4 bw...
Would also be good to test for pure Cu2C2 and pure CuO2...for comparison purpose; and to check the purity of the CuO2 by titration of its available oxygen...

The best tool for such a determination of the power would be sand crushing testing.
During all the testing...you would need to use the same sand, same basting device, the same detonating caps, the same quantities of tested material, into the same geometric conformation and of course the same batches of Cu2C2 and CuO2...





PH Z (PHILOU Zrealone)

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[*] posted on 10-7-2017 at 09:51


Quote: Originally posted by Σldritch  
I think it would be a better idea to make it from copper hydroxide, which supposedly yields microscopic crystals, and then wash it with ammonia to get rid of the hydroxide/oxide impurities. Try making a fresh suspension from sodium hydroxide and copper sulfate. Ill try to make a reliable method similar to that later.

EDIT: The red oxide is copper (III) oxide. It is more prevalent in caustic suspensions. It will form in hydrogen peroxide and sodium cuprite. Much harder to isolate though i think since it needs a lot of base which is hard to get rid of due to viscosity, solubility and very low volatility

[Edited on 10-7-2017 by Σldritch]

The use of CuO or Cu(OH)2 is probably better than the NH4OH route because it allows for the use of more concentrated H2O2 than 3%...like 33% (130 volumes) or 50% (200 volumes).

Would be nice to compare the 3 routes...and the purity of the resulting CuO2 on the basis of its (active) oxygen content...




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[*] posted on 10-7-2017 at 10:14


1):
From wiki:

Thermal decomposition of copper acetylide in vacuum is not explosive and leaves copper as a fine powder at the bottom of the flask, while depositing a fluffy very fine carbon powder on the walls. On the basis of spectral data, this powder was claimed to be carbyne C(−C≡C−)nC rather than graphite as expected.[2]

So from this i came to the conclusion that it is not the the decomposition of copper acetylide that is explosive but the burning of the finely divided decomposition products. This is implied from the disproportionally large fireball from detonating copper acetylide.

A smaller fireball would mean more of the reaction products are burned earlier and coantrubutes more to the detonation.

2) and 3):
The negative OB was intended, i only had 15 mg of copper peroxide, and not being experienced with explosives thought i had to be conservative of it and opted for a negative OB. Also the negative OB was intended to encoaurage copper formation. Ill admit that was a bad idea since obviously all the copper would instantly burn...

4): Yes, most of the copper did probely not boil. Especially because it would require 3400C or there about to reverse its reaction with oxygen :(

4A: Yes but its probely mostly soot that hit the paper and therefore lost
access to oxygen. (Ammonia gives it very little color)

4B: Not that it is a very exact measure but the flame looked a little
more yellow. Im going to guess this was the case.

5):
Yes i learned that very quickly, its my first time doing something like this. Sadly it means i cant compare the souand of the two explosions.

6): Ultimate power was never the goal.

Why? Why not? Its intresting, its fun and it is the coppererliest.

Thanks for the comments i guess, try making the copper (III) oxide. ;)

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[*] posted on 22-7-2017 at 02:34


Interesting
The name peroxites has been suggested for the true salts of hydrogen peroxide drawing from the like chlorite to peroxite
there are two copper peroxides lower "peroxide" Cu2O3 and the higher one CuO2

According to sources copper peroxide can be dark green/ brown/yellow brown/ orange yellow / and red
1
At 0° C. neutral hydrogen peroxide converts cupric hydroxide into the brown copper peroxide.

2
It is also produced by the interaction of solutions of cupric chloride and hydrogen peroxide with alcoholic potash at -40c

3
an ether-solution of hydrogen peroxide. on very finely powdered cupric hydroxide at 0° C.

4
The compounds obtained by the action of hydrogen peroxide on cupric hydroxide forming a yellow, gelatinous peroxide of the formula CuO2. A solution of sodium copper carbonate, Na2Cu(CO3)2, reacts with hydrogen peroxide to precipitate a very unstable, yellowish-brown peroxide, containing more oxygen than would correspond with the formula Cu2O3, but less than that required by CuO2.

__________ _________ ______ _____
And here is the other peroxide Cu2O3
This copper peroxide, Cu2O3, is stated to be formed as an orange-yellow substance by electrolytic oxidation with a high current-density at a copper anode immersed in concentrated caustic alkali, and hydrogen peroxide

also by the action of alkaline hypochlorite and hypobromite on cupric hydroxide and copper.

An example is the interaction of potassium persulphate with a mixture of cupric hydroxide and barium hydroxide cooled with ice and salt, colour changes taking place in the solution, and a amaranth-red precipitate being deposited.

Properties of Cu2O3
The substance formed yields oxygen with sulphuric acid, liberates chlorine from hydrochloric acid, oxidizes ammonia in the cold to nitrogen and nitrous acid and traces of nitric acid, decolorizes permanganate, and liberates iodine from potassium iodide.

Compare and contrasting
It is not a peroxide, since with dilute acids it does not yield hydrogen peroxide, and therefore differs from the orange-yellow pperoxide obtained by means of hydrogen peroxide. The ratio between the percentages of copper and active oxygen present corresponds with the formula Cu2O3.


Excerpt and quotes from atomistry.com


My covering of copper and zinc peroxide
Copper peroxide on can use a weaker hydrogen peroxide solution compared to zinc peroxide due to copper hydroxide being unstable and zinc hydroxide is more stable therefore zinc peroxide requires higher peroxide concentration for a more complete reaction or else it will be a mixture of zinc hydroxide and zinc peroxide.

Zinc peroxide is more stable than copper peroxide which decomposes in water the copper ion decomposes peroxide
Hydrogen peroxide is stable in a suspension containing zinc ion

[Edited on 23-7-2017 by symboom]




Natures Intellectual Organic Peroxide. >>Ascaridole <<

Oxone
Used for the production of --> CH2O/Cl2/ClO2/Br2/I2

------------------------------------->>Hydrogen Peroxide << -------------------------------------------- >> Acetylene <<
Peroxide Salts
Zinc Peroxide <\> Copper Peroxide <\>Silver Peroxide <\>Lithium Peroxide <\>Magnesium Peroxide <\>Calcium Peroxide to Calcium Superoxide
CoO2. \\ NiO2 \\ Ti/V/Cr peroxy complex \\ Triamine chromium peroxide \\ LiH \\SiO2-H2SO4 (SSA) \\ [Ni(NH3)6]

Exotic reducing agents
Ga2O TiCl2 GeCl2 && Na2S2O4
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