Pretty Pictures (2)

Hi.

There is few photos of my crystals. The blue crystals are CuSO4.5H2O - the bigger one grew one year, maybe longer. They grew up on copper wire - it wasn't the best option, but they were my first crystals. First was gift for friend and second will be for my girlfriend .

The violet one in transparent crystal is K(Al,Cr)(SO4)2.12H2O. It is coated by potassium alum. I made it by mixing potassium alum and chrome alum in ratio 10:1. Another gift for my friend.

The pale violet crystals are NH4Fe(SO4)2.12H2O. This two crystals are growing really fast - they are one day old and still growing in solution.

The pale violet and rusty crystals in bowl are also ammonium-ferric sulfate. After I pulled out these crystals out of solution, they were rusty (because of colour of solution) but after a some time were pale violet. Later their colour disappeared and after few hours they were rusty. This compound really quickly loses water.

The green crystals are CuCl2.2H2O. They are currently turquoise.

the potassium-chromium crystal in a crystal is really cool

Ubya: Thanks .

Ammonium-ferric sulfate growing up very fast! I just love these crystals . Here is few photos from this morning.



[Edited on 9-5-2019 by Bedlasky]

Crude cinnamic acid, basically solidified blobs of acid mixed with cinnamaldehyde, with crystals of pure acid growing from them.

Running some tests on an otc product to figure out what might work for an extraction.

Some nice FeSO₄ crystals from a few years ago, made from steel wool and drain cleaner sulfuric acid as per this link. Alas, they're all brown and spoiled now. Picture has been edited to improve quality (brightness/contrast).

Eventually I should save them by redissolving in dilute sulfuric acid, filtering off the crud, reducing the Fe³⁺ with a little extra iron, and making some Mohr's salt ((NH₄)₂Fe(SO₄)₂·6H₂O)



[Edited on 5/26/2019 by Phthaloblue]

CoCl2 + isopropanol + water

Quote: Originally posted by Phthaloblue

Some nice FeSO4 crystals from a few years ago, made from steel wool and drain cleaner sulfuric acid as per this link. Alas, they're all brown and spoiled now. Picture has been edited to improve quality (brightness/contrast). Eventually I should save them by redissolving in dilute sulfuric acid, filtering off the crud, reducing the Fe3+ with a little extra iron, and making some Mohr's salt ((NH4)2Fe(SO4)2·6H2O)

No mercury present, but the thought is beautiful.
This will make a nice addition to my element collection.

A failed attempt at Copper Peroxide yielded this

I am at a loss how to make the synthesis work in water. It hates being filtered and decomposes really quick. Make it with too concentrated peroxide and it goes whoosh. At least it looks pretty this way. Some of the desired product can be seen on the glass rod where it escaped the water.



[Edited on 7-8-2019 by Σldritch]

Ice spikes

One frosty morning recently I spotted some ice spikes that had grown out of some water that had frozen in an up turned plastic access cover in my garden. Previously I had only seen pics of them.

Quote: Originally posted by Hegi

Can you please provide full procedure?

CsCu(SO4)2.6H2O, a Tutton salt



The large crystal is 2cm across and was grown in 2 days. I think that's much too fast to obtain fully transparent crystals.

Tutton himself described the colour as greenish blue. I can't photograph that, but under incandescent light the colour is indeed greenish blue. The picture was taken under a fluorescent lamp light.

The crystal habit Tutton describes in his 1893 article is in the drawing (Fig. 31).

Some Tetraamminecopper(II) sulphate complex I made

The two extremes of Cobalt Violet, a cobalt(II) phosphate pigment. The pink one was prepared by adding aqueous ammonia to excess pink(relatively dilute) CoCl2 and NaH2PO4 solution, while the deep purple one was prepared by adding solid KOH to a boiling hot solution of the two that had been saturated with salt.

Pretty tasty stuff and a pretty picture! Breakfast in San Antonio Tlayacapan, Jalisco

Quote: Originally posted by Amos

The two extremes of Cobalt Violet, a cobalt(II) phosphate pigment. The pink one was prepared by adding aqueous ammonia to excess pink(relatively dilute) CoCl2 and NaH2PO4 solution, while the deep purple one was prepared by adding solid KOH to a boiling hot solution of the two that had been saturated with salt.

An attempt at K2Cu(malonate)2. Nice xtals, but they turned much paler blue after drying.

Quote: Originally posted by fusso

Cant u shrink the imgs? theyre unnessarily big and is annoying to scroll and watch.

Quote: Originally posted by Herr Haber

And maybe get rid of the non chemistry pictures ? (I dont want to imagine what they were before shrinking, they're still too big)

Today at work I witnessed what happens when a flask is heated WAY too hot while under vacuum!


It mushroomed!

Quote: Originally posted by Texium (zts16)

Today at work I witnessed what happens when a flask is heated WAY too hot while under vacuum! It mushroomed!

Pretty much spot on. However, the mantle was hooked up to a variac, and the variac was only at 65%

The funny thing is, I think as the glass pulled away from contact with the heating mantle, it slowly cooled and hardened again, and that’s why it didn’t fully implode and held its shape without deforming any more. Surprisingly, the heating mantle was not fused to it, and still works perfectly fine!

Quote: Originally posted by Tsjerk

I fried a microwave/oven a week ago when I tried to dry sieves. I accidentally turned on the microwave function of the oven and set it to 90 minutes... When I came back after 30 minutes the plastic rotation stand for the glass plate was smoking and the beaker glass was molten to the glass bottom plate. It did get me a transformer to build a Tesla coil!

Quote: Originally posted by Texium (zts16)

Pretty much spot on. However, the mantle was hooked up to a variac, and the variac was only at 65% The funny thing is, I think as the glass pulled away from contact with the heating mantle, it slowly cooled and hardened again, and that’s why it didn’t fully implode and held its shape without deforming any more. Surprisingly, the heating mantle was not fused to it, and still works perfectly fine!

making 2-bromopropane (bottom later) with isopropyl alcohol and hydrobromic acid x)


[Edited on 3-4-2020 by Cou]

Quote: Originally posted by Texium (zts16)

Today at work I witnessed what happens when a flask is heated WAY too hot while under vacuum! It mushroomed!

h

Hi.

Orange solid is (NH4)4H6[Mn(MoO4)6] and cream solid is MnMoO4. It's interesting that two compounds with similar composition have that much different colours.

If you like green - the different green shades of praseodymium.

Lead iodide PbI2 drying on steam bath

A nice picture of two comparable compounds I made: Ag3PO4 and Ag3AsO4.

Woelen: Nice picture. Similar colour difference can be also seen in many chalcogenides (probably best colour differences can be seen in CdO/CdS/CdSe/CdTe - the bigger anion the darker colour).

Mix of hydrated silicon dioxide, sodium silicomolybdate and silicomolybdenum blue.

Copper acetate. The zoomed in photo is the copper acetate drying on a steam bath and shown in the crucible is the dry product. The color stayed very much the same from wet to dry.

Some lovely cultures of marine fungi
(source: https://www.cell.com/current-biology/fulltext/S0960-9822(19)31100-5 )

Some crystals of hexamine that formed in a flask I neglected to clean for a couple weeks

Ammonium chloride that crystallized out beautifully overnight after postponing the wash up of this 2L seperatory funnel.



[Edited on 28-5-2020 by Sigmatropic]

F---- Yeah baby... Sorry I'm excited.







Now all the fun of coming up with the funding for measurement devices, till then, these gonna hide on a shelf.. I loved the service, wonderful and easy
USA shipping only ... http://www.minresco.com/index.html

Some lead acetate crystals that I recently produced with some scrap lead.

@violet sin; is that tyuyamunite I see at the bottom?

Now these are tyuyamunite:

Tyuyamunite encrusted blocks underground in the Shekafter East Mine, Kirgyzstan


Close up of a 3" specimen

I worked on uranium exploration for quite a few years. I even worked right next to the old Tyuya Muyun Mine near Yaravan in southern Kirgyzstan and managed to collect tyuyamunite, turanite etc from this classic site.

A freshly cleaned fume hood, ready to be messed up again!

Chlorophyll in acetone (visible, visible+NIR, NIR, NIR)
(I fucked up the focus while hacking the camera sensor of this phone)

Good old Ark-In-Saw. This cloud teased me, but never actually dropped a funnel.

I got a couple element samples, one kinda.

The TIG electrodes are 4% ThO2 instead of the normal RED tip that have 2%. Amazon purchase at a little over 50$ but ~41.25g each x 10 isn't a bad amount of sample for the price.

The 100g Gadolinium was an aliexpress purchase ~35$ after shipping/tax. There is a seller of ThO2 white as the driven snow on aliexpress... But between the mineral sample I have, couple small harbor freight TIG electrodes and the fine , shiny and richer samples ... No need to go there.

on its way still is a wish purchase of 100g Gallium for ~36$ from China. Probably take a while to get here. 1g of germanium that was only $5 but shipping brought it up to $8 and change, was not paying attention.

Also I finally got around to epoxy coating my asbestos samples. White asbestos in serpentine, so I'm pretty sure it's crysoltile. Fills all the cracks in serpentine, comes in tan/honey/light blue/white colors. Good stuff to get locked down, don't care if it downgraded the specimens. The best bleached rock, got the next batch of epoxy, which was far more yellow, and almost looks worse than the poorly cleaned rocks and clearer epoxy... A lye / peroxide mix was used. The bucket they were in gave way to sunlight and leaves fell in to get a nice adherent organic film. No acid was used.

Ahhh, my lab has been packed up for a couple years. Once upon a time pre-children, that was my goal, I wanted the thorium dioxide out. My sample then was small and expensive. IIRC it was ~$15 for a 3 pack of thorianated tungsten TIG electrodes at harbor freight. They look like crappy little black needles and there was little to them... Returns would have been small. If I ever did dissolve one it was 40% of one rod, but I'm pretty sure it went to first attempts at NO₂ via high temp arc.

Peroxide works just fine for all the incandescent filaments previously solved. I'm sure plenty of members have dissolved the TIG rods and can give you pointers.

Right now I'm far more of a collector/builder that wet chem in any sense. Expanding things for when I've more time, less worry.

1) Nope, have all the old tug rod, none was digested. Guess it was a 5 pack.

2) Potassium carbonate from years back, done here on SM from banana peels...
3) Copper sulfamate possibly Zinc contamination, but was third re-xtal after picking blue away from clear crystals.
4) potassium iron oxalate crystals from when I prepared them here years ago... Aged well with no top eh?

Good friend gave me this jar about 6 months before he passed. Told me, "Here, can you do anything with this?". I thought he was looking for a laugh as he watched me go giddy over an empty jar. Nope, wasn't empty.



[Edited on 6-7-2020 by OldNubbins]





[Edited on 6-7-2020 by OldNubbins]

To me it says clearly platinum too.
Reminds me of the "710 cap" joke

Quote: Originally posted by sciece nerd

I guess I have to look more closely.

I got glasses a few years ago, and wow!
Didn't remembered the world to be that detailed anymore

So I made some potassium bis(oxalato)cuprate(II), and got some gorgeous blue needles. I also got a bit of precipitate that looked like copper(II) hydroxide, so I added excess potassium oxalate and recrystallized that. That gave me some lighter blue, differently shaped crystals. Not sure what they are- possibly an oxalato/hydroxy complex?
Aha! According to https://www.coursehero.com/file/26392719/lab-03pdf/ , the needles are the tetrahydrate, and the blocks are the dihydrate.






[Edited on 16-6-2020 by DraconicAcid]



[Edited on 16-6-2020 by DraconicAcid]

Interesting color I thought for a copper salt (that does not contain another metal, only copper). A dark purple copper cyanurate. Procedure was described in more detail here: http://www.sciencemadness.org/talk/viewthread.php?tid=155624

KCl fractional crystallization from low sodium salt. I dissolved the salt in boiling water until it started to crystallize out added a little to dissolve it again, then I filtered the silicon dioxide additive and left it on the table to cool, and later put it in the freezer.

Gonna collect crystals, concentrate it to saturation and repeat. I suppose NaCl (30%) will also start to crystallize eventually so likely the first batch could be the only pure KCl.

I made some propyl po-toluate, and it seems to be crystallizing nicely (either that or, there's a lot of unreacted acid that's decided to crystallize).

A macro shot of an uranium mineral under short wave UV light.
The field of view is about 5 mm and the exposure time was 10 seconds, making this seem like a lot more than it actually is.

I found this rock in Germany a few years ago, in an old quarry from which low grade uranium ore (<0.1% U) was mined in the 60's. It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass.

What surprised me is that it fluoresces under short-wave UV, but not under long-wave UV. Under long-wave UV or normal light, no obvious U minerals can be distinguished.

Still not sure exactly what the mineral is, my current best guess based on the locality and this fluorescence is metaheinrichite (Ba(UO₂)₂(AsO₄)₂.8H₂O), but regardless, I do enjoy finally being able to claim that I have extracted a tiny but visible amount of uranium from the earth myself. I'll be adding the rock to my element/mineral collection.



[Edited on 19-7-2020 by phlogiston]

I got a couple min to set up a tripod, clip on lense and my phone from the back yard. This was a few nights ago.

Here are a couple from last night. Not as good, it's quit a bit dimmer now. Our sky had haze and it didn't help at all. This is 8x magnification on top of what ever my phone does.



Took quit a bit of fiddling to get it right. The set up was not ideal. At one point the clip dropped my phone with lense clipped on... To concrete on edge of pool.. happy bounce away from the water softener by my foot.

I had trouble seeing it this time. The other day it was easy to see. My 6 year old spotted it right away. Now I don't think so. Anyone have better luck than I?

[Edited on 24-7-2020 by violet sin]

*********
July 23
Nothing I could get. Either I missed it or it's too dim for the tiny clip on lense.

[Edited on 24-7-2020 by violet sin]

Quote: Originally posted by phlogiston

It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass.

Quote: Originally posted by phlogiston

What surprised me is that it fluoresces under short-wave UV, but not under long-wave UV. Under long-wave UV or normal light, no obvious U minerals can be distinguished.

VS: great pix! great job!

Quote: Originally posted by Herr Haber

Quote: Originally posted by phlogiston   It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass. Err, a lot more I would say ! My hottest piece of uranium glass gives around 400 cpm

Not for the faint hearted; 6g of diiodo-acetylene recrystallised from dichloromethane:-

Pure hydrogen cyanide

Quote: Originally posted by Pok

Pure hydrogen cyanide

Had a bit of NO_x build up during ethyl nitrite synth.Picture does it no justice.

Quote: Originally posted by j_sum1

Nice rack Arky.

Cheapest chromatography column ever- 4 cm of calcium carbonate, using hexanes (then 9:1 hexanes/ethyl acetate) as an eluent separated carotenes from chlorophylls perfectly.

Copper glycinate crystallising out on the steam bath.

working on HMTA and HCl to CH3NH2 HCl

A cobalt glycinate salt drying on the steam bath. The few glassy crystals is probably the slight excess of glycine.

Salt formed from reacting nickel carbonate with glycine crystallising out on the steam bath. Hope it stays blue as it dries!

I stumbled across this website that shows pictures of many compounds. This will be a useful resource for me as I am always trying to make different colors How accurate it is I do not know but at least for copper it seems in the ballpark.

https://onyxmet.com/index.php?route=information/periodic_tab...

Ammonia gas passing above lithmus solution.

Cyan copper...

Wet crystals of Tin ii iodide