| Pages:
1
2
3 |
crystal grower
Hazard to Others
Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline
Mood: Puzzled
|
|
Actually, the NiSO4 doesn't form pentahydrate or trihydrate, or did you mean CuSO4?
|
|
|
The Volatile Chemist
International Hazard
Posts: 1981
Registered: 22-3-2014
Location: 'Stil' in the lab...
Member Is Offline
Mood: Copious
|
|
For some reason I assumed those photos were of the copper(II) sulfate trihydrate preparation, didn't see that they were of a nickel salt.
|
|
|
crystal grower
Hazard to Others
Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline
Mood: Puzzled
|
|
Ok , never mind  .These are the crystals of copper(II) sulfate trihydrate and
pentahydrate (from article http://chem.pieceofscience.com/?p=1485):
 
[Edited on 18-5-2016 by crystal grower]
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Now that bigger picture, he'en mighty purdy.
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
The photo of copper(II) formate tetrahydrate was added to the article - Copper(II) formate preparation  This one is recrystallized product. I
observed that supersaturated solution is formed using this procedure.
<img src="http://chem.pieceofscience.com/wp-content/uploads/2016/05/copper-formate.png" alt="copper formate" style="width:900px;height:600px;">
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Hi chemists,
it was a busy month for me and my colleague but still - we posted a few new articles and also revised the old ones. We hope that you´ll find them
useful or at least interesting.
Syntheses:
Cobalt metal preparation (2 ways) - Reducing cobalt(II, III) oxide with hydrogen and double replacement reaction are used for cobalt metal
preparation.
Boric acid preparation - The article contains also trimethylborate preparation.
Copper(II) oxalate complex hydrates - A nice demonstration on how can hydrates differ in their crystal forms.
Silver nitrate preparation - A simple procedure starting with a silver ingot and pure nitric acid. Recrystallization recquries a lot of patience.
Minerals:
Halite - pretty basic stuff but did you know that this mineral was the first to be studied for its crystals structure?
Grossular - my own finding  here in Slovakia quarry. The crystal is
well-shaped and is over 4 mm in diameter.
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
Velzee
Hazard to Others
Posts: 381
Registered: 19-8-2015
Location: New York
Member Is Offline
Mood: Taking it easy
|
|
Woah, beautiful!
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer
"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río |
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
We´re back
Hi everyone!
I just want to inform you that we´ve got back together and after almost two years of inactivity we are going to continue posting and keep the page
alive.
I hope you will like changes that are going to be made and the page content as well!
If you have any ideas of synthesis that might interest you, please write them down and we will try our best!
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Yay !
Happy days !
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Hi aqa! Hope you will enjoy new posts!
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Quote: Originally posted by Hegi  | | If you have any ideas of synthesis that might interest you, please write them down and we will try our best! |
Trichloroacetic acid, Vogel, page 247.
I found a slightly less terse description in another paper somewhere. Will try to find it again.
The chloral hydrate step needs to be Cold during the chlorination step or there is no solid precipitate.
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
| Quote: Originally posted by aga | | Quote: Originally posted by Hegi | | If you have any ideas of synthesis that might interest you, please write them down and we will try our best! |
Trichloroacetic acid, Vogel, page 247.
I found a slightly less terse description in another paper somewhere. Will try to find it again.
The chloral hydrate step needs to be Cold during the chlorination step or there is no solid precipitate. |
Sure I will be glad to perform the synthesis. However, at the time, I do not have access to chloralhydrate. Maby if someone is able to provide few
grams I will do it.
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
I remember reading that it is prepared by chlorinating cold ethanol, which creates a white precipitate, which is then reacted with conc sulphuric
acid.
Can't find the paper/book at the mo. Will keep looking.
Edit:
Found it in Cohen "Practical Organic Chemistry" (in the library) page 99.
TCA is immediately after it.
[Edited on 13-4-2018 by aga]
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
| Quote: Originally posted by aga | I remember reading that it is prepared by chlorinating cold ethanol, which creates a white precipitate, which is then reacted with conc sulphuric
acid.
Can't find the paper/book at the mo. Will keep looking.
Edit:
Found it in Cohen "Practical Organic Chemistry" (in the library) page 99.
TCA is immediately after it.
[Edited on 13-4-2018 by aga] |
I would rather not work with elemental chlorine. Did it twice, did not go well.. .)
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Really ?
I'm nowhere near as accomplished as your distinguished selves, yet i found Cl2 quite easy to work with.
Oh well, guess i'll have to keep trichloroacetic acid on my "TODO" list.
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
The webapge has been moved to a new domain PIECEOFSCIENCE.COM from now!
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
I haven't visited for a while. I had forgotten how lovely these photos are.
|
|
|
crystal grower
Hazard to Others
Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline
Mood: Puzzled
|
|
Thanks!
I've just noticed you have a YT channel, will have to take close look at it today.
|
|
|
crystal grower
Hazard to Others
Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline
Mood: Puzzled
|
|
http://pieceofscience.com/world-of-crystals/
I've made a little "gallery" article if someone's interested.
|
|
|
The Volatile Chemist
International Hazard
Posts: 1981
Registered: 22-3-2014
Location: 'Stil' in the lab...
Member Is Offline
Mood: Copious
|
|
Great looking website! Just enjoyed going through your more recent posts.
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Thanks a lot. We are preparing more articles.. and projects, si we hope it will amaze you as well.
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
crystal grower
Hazard to Others
Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline
Mood: Puzzled
|
|
Cobalt sulfate
I've experimented a little with CoSO4. These are crystal of Cobalt(II) sulfate hexahydrate crystallized from dilute sulfuric acid. They are really
similiar to those of β-polymorph of NiSO4*6H2O, which makes me wondering if there aren't two polymorphs of CoSO4*6H2O too. (There is very little
information I was able to find about CoSO4 hydrates properties). I'll try different concentrations of H2SO4 to find out if different crystals will
grow.
Here's an article I wrote so far If you're interested:
http://pieceofscience.com/cobalt-sulfate/
[Edited on 15-5-2018 by crystal grower]
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
sodium thioantimonate
here you go guys, sodium thioantimonate from natural antimonite .) SODIUM THIOANTIMONATE SYNTHESIS
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
We posted a new article on hydroiodic and iodic acid preparation, check it! IODINE ACIDS
[Edited on 6-6-2018 by Hegi]
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
|
|
|
weilawei
Hazard to Others
Posts: 130
Registered: 3-12-2017
Member Is Offline
Mood: No Mood
|
|
"You do not have permission to preview drafts."
Edit: It works from the main site. Nice writeup!
[Edited on 6-6-2018 by weilawei]
|
|
|
| Pages:
1
2
3 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
