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kristofvagyok
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Someone asked a few days ago, that what is my favorite chemical reaction. So I made it:
When we place a piece of copper wire to a silver (nitrate/sulfate) solution beautiful silver crystals will start to grow on the surface of the
copper, while the copper dissolves into the solution.
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:
"You can’t become a chemist and expect to live forever." |
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Squall181
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Copper Acetate Crystals, not sure what the light blue crystals are. I made these by dissolving copper (II) oxide in an excess of acetic acid and let
the mixture evaporate in my desiccator.
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Mailinmypocket
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Phthalimide crystals that sublimed in the mouth of a reaction tube, taking macro pictures with an iPhone is ridiculous 
 
[Edited on 18-6-2013 by Mailinmypocket]
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Finnnicus
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I know that feel bro. I know that feel... Stupid apple.
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Endimion17
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Oh great, new wallpapers for my desktop have arrived. 
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Mailinmypocket
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Ain't this thread awesome!!?
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Endimion17
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Quote: Originally posted by Squall181  | | Copper Acetate Crystals, not sure what the light blue crystals are. I made these by dissolving copper (II) oxide in an excess of acetic acid and let
the mixture evaporate in my desiccator. |
Dark ones are anhydrous, lighter ones should be a dihydrate.
@Mailinmypocket It makes my work on the computer much easier. Now I'm using this first copper acetate photo because it looks cold, and the weather
around here is turning into a first heat wave this year.
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kristofvagyok
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Just another one, my fav from the silver crystal series:
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:
"You can’t become a chemist and expect to live forever." |
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ElizabethGreene
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"Oops?"
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Wizzard
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My single largest Neodymium Sulfate crystal - The cleavage planes are a very harsh mistress. Such is life. Crystal was just under 1" on it's longest
side, and .75" tall. It has a single zone in the larger part, which is nearly 2ccs, and is perfect, no fractures or inclusions.
I can make smaller ones all day long - The two largest ones were riddles with fractures, one remained in 2 pieces, the other became far more. There
will be more to come.
larger:
http://imgur.com/BncMzL4
[Edited on 6-25-2013 by Wizzard]
[Edited on 6-25-2013 by Wizzard]
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bfesser
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Gneiss cleavage you have there, <strong>Wizzard</strong>.
<img src="http://itc.gsw.edu/faculty/bcarter/physgeol/metrx/gneiss.JPG" width="225" />
[Edited on 7/8/13 by bfesser]
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tsukasa
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I almost forgot to introduce myself. Greetings from Russian Hyperlab!
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mr.crow
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Wow, interesting nitro compounds. Be careful with the top right one
Double, double toil and trouble; Fire burn, and caldron bubble
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Eddygp
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Wow those last compounds are beautiful and have a beautiful chemistry, of course. I like the light yellow one (top right) > .
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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Eddygp
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(I know this was quite a while ago)
I love that effect. I have managed to get that on many metals, including iron, nickel, lead and niobium The process is called tempering , by the way.
[Edited on 26-6-2013 by Eddygp]
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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plante1999
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I think one is phenyl 2 nitropropene, but what are the three other ones?
I never asked for this.
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Endimion17
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| Quote: Originally posted by Eddygp | (I know this was quite a while ago)
I love that effect. I have managed to get that on many metals, including iron, nickel, lead and niobium The process is called tempering , by the way.
[Edited on 26-6-2013 by Eddygp] |
Tempering might create such thin films, but not neccesarily. Tempering is simply a name for a hardening process. The appearance of thin film depends
on the atmospheric conditions involved and can come as a result of other processes, too.
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Adas
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Isn't phenyl-2-nitropropene used to make meth? Or is there a mess in my memory?
Rest In Pieces!
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mayko
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Cobalt nitrate crystals, clinging to a test tube...
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
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tsukasa
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Not only meth. Amphetamine too. Other nitro-compounds can de reduced to PMA, DOM (STP), MDA. Monomethylation of MDA gives MDMA, and monomethylation of
PMA yields PMMA. Alternative route: first make a ketone (for example, methylenedioxyphenylacetone) then react it with MeNH2 and reduce with
NaBH4.
[Edited on 27-6-2013 by tsukasa]
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Number 9
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Nice work done! I'am wondering in what kind of solvent and temperature you did the condensation between benzaldehyde and nitroethane?
In my case it was rapidly undergoing a polymerization and the solvent turned orange-red. Hydrogenisation is not so straightforward because the stable
conjugated system.
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tsukasa
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| Quote: Originally posted by Number 9 | Nice work done! I'am wondering in what kind of solvent and temperature you did the condensation between benzaldehyde and nitroethane?
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Microwave synthesis was used. Small amount of glacial acetic acid is used as solvent (for example, 5 mL of acid per 30 mL nitroethane).
Cyclohexylamine was used as a catalyst. The RM was heated in microwave oven for 10-15 seconds, until boiling starts and then cooled to RT. This was
repeated 5 times.
Polymerization will always take place. So recrystallization (in this case from IPA) is necessary to get product with high purity.
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togipaw
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Ridiculously beautiful
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togipaw
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Recrystallizing Acetylsalicylic acid in IPA
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togipaw
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my ghetto distillation of DCM. No goop to clean from the glassware!!
[Edited on 28-6-2013 by togipaw]
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