| Pages:
1
..
68
69
70
71
72
..
77 |
Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Hi CharlieA I paid Australian $30 for 500g thiourea (old stock). As far as I know the supplier I got this from does not ship overseas. Is thiourea
hard to get in the US?
|
|
|
Bmoore55
Hazard to Self
Posts: 85
Registered: 23-7-2018
Location: Texas
Member Is Offline
|
|
SEM images of dendrites
Some really pretty dendrites taken from a sample submitted to my lab.
|
|
|
Bedlasky
International Hazard
Posts: 1241
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
Quote: Originally posted by CharlieA  | [rquote=647265&tid=26378
...I visited the supplier yesterday to get some thiourea... ...
[/rquote]
Out of curiosity, what would 10-50g of thiourea, shipped to the US, cost? |
If you have access to ammonium thiocyanate, you can make thiourea by thermal decomposition of NH4SCN.
For test tube complex chemistry can be also used solution for cleaning silver which often contains thiourea.
|
|
|
Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Something yellow-ish crystallising out of the red methanol solution as it slowly evaporates.
|
|
|
Bedlasky
International Hazard
Posts: 1241
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
What compound is that?
|
|
|
Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Bedlasky it is an attempt to make nitratopentakis-tiokarbamatbismuth(III) nitrate [Bi(NO3)(CS(NH2)2)5](NO3)2. Thank heavens for copy and paste!
It is mentioned on the crystal growing wiki here:
https://en.m.crystalls.info/Nitratopentakis-tiokarbamatbismuth(III)_nitrate
While trying to find more details about this compound on the internet (I did not find exactly what I was looking for) I saw that some bismuth
complexes are made using methanol as solvent. I then did two experiments (mixing thiourea and bismuth nitrate solutions), one using water and one
using methanol. Water gave a red solution, this is slowly evaporating and so far staying red. Methanol gave a bright orange solution, which slowly
became darker and more black as it was exposed to air, and now as it evaporates down in is becoming redder.
|
|
|
Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Potassium ferricyanide crystal, it is still growing.
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Probably a failure but really interesting nonetheless.
I am attempting to produce Zn powder by elecrolysis in alkaline medium.
Anode is a cast zinc sphere. Cathode is copper sheet now thickly coated in zinc (and not powdering off like I expected.)
The blue coating on the anode I presume is copper zincate. Not required but pretty.
|
|
|
MidLifeChemist
Hazard to Others
Posts: 192
Registered: 4-7-2019
Location: West Coast USA
Member Is Offline
Mood: precipitatory
|
|
It looks like a deep blue death star. Very interesting!
|
|
|
arkoma
Redneck Overlord
Posts: 1763
Registered: 3-2-2014
Location: On a Big Blue Marble hurtling through space
Member Is Offline
Mood: украї́нська
|
|
With the exception of the piperine, these are shots of stuff that ends up "Where Beakers Go To Sit And Get Forgot About".
Piperine
Should be Lead Chloride. Had a beaker with a sat solution of Copper Chloride and chunks of lead in it on shelf for a month
The remnants of a 1940 something Mercury Dime in HNO3. Crystals of AgNO3 hard to see.
Mystery products from BenzylOH and Dichromate. Been sitting on shelf forever. Smells WoNDERFUL. Cherries.
A steel screw in a slotion of CuSO4. Grab bag of Cu powder and Iron Sulfate I reckon
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
|
|
|
Fyndium
International Hazard
Posts: 1192
Registered: 12-7-2020
Location: Not in USA
Member Is Offline
|
|
I dug up my good old heating bath, and found that half of the liquor had crystallized into fancy formations. Did not know that calcium chloride can
also look nice, as it's usually just caulky flakey gunk in big bags to be thrown on dirt roads.
 
|
|
|
Fluorite
Hazard to Others
Posts: 139
Registered: 26-12-2018
Location: United Arab Emirates
Member Is Offline
|
|
Sodium zincate
NaOH and battery shell ugh I shouldn't touch it 
cadmium blood test ASAP!
|
|
|
Bezaleel
Hazard to Others
Posts: 444
Registered: 28-2-2009
Member Is Offline
Mood: transitional
|
|
Enjoying the gorgeous red of bis-dimethylglyoximenickel(II), which appears to me like the colour of a raspberry-strawberry smoothie:
[Edited on 22-11-2020 by Bezaleel]
|
|
|
greenlight
National Hazard
Posts: 753
Registered: 3-11-2014
Member Is Offline
Mood: Energetic
|
|
Dirty old ice pack ammonium nitrate crystals.
[Edited on 24-11-2020 by greenlight]
 
Be good, otherwise be good at it 
|
|
|
Piroz
Harmless
Posts: 19
Registered: 15-12-2020
Location: Poland
Member Is Offline
|
|
Blue crystals are copper-calcium acetate (with white needles- that's calcium acetate). The orange liquid in smal bottles is dinitrogen
tetraoxide/nitrogen dioxide.
  
|
|
|
egret
Harmless
Posts: 20
Registered: 22-2-2018
Member Is Offline
Mood: No Mood
|
|
Steam distilled benzaldehyde.
|
|
|
paulll
Hazard to Others
Posts: 112
Registered: 1-5-2018
Member Is Offline
Mood: It's fine. Really.
|
|
Can't find a single tumbler in the place but luckily my hobby involves collecting glassware... Merry Christmas folks!
|
|
|
Bedlasky
International Hazard
Posts: 1241
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
[MoOCl(H2O)4]+ solution in conc. HCl in volumetric flask. Concentration of Mo = 1,4 g/l.
|
|
|
Piroz
Harmless
Posts: 19
Registered: 15-12-2020
Location: Poland
Member Is Offline
|
|
Sulfamic acid crystal
|
|
|
roXefeller
Hazard to Others
Posts: 463
Registered: 9-9-2013
Location: 13 Colonies
Member Is Offline
Mood: 220 221 whatever it takes
|
|
Solved the daughter's shark puzzle with a python script I wrote, called sharks_on_a_plane.py
One must forego the self to attain total spiritual creaminess and avoid the chewy chunks of degradation.
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Winner of the thread!
This has been posted before in this thread: but so worth repeating.
https://labphoto.tumblr.com/tagged/portfolio
Credit to Kristof Hegadus, kristofvagyok
I doubt he is still active here and the tumblr is five years since last post.
But it is a gem that is not worth letting slide into the dark chasms of the internet.
|
|
|
stibium
Harmless
Posts: 7
Registered: 9-12-2015
Member Is Offline
Mood: No Mood
|
|
Phosphorescent materials based on alkaline earth sulfides and zinc sulfide
From left to right:
SrS:Eu
CaS:Eu,Ce,Tm
SrS:Bi
CaS:Bi,Ag
ZnS:Cu
I explain how I made them at the thread "making phosphorescent materials"
  
|
|
|
greenlight
National Hazard
Posts: 753
Registered: 3-11-2014
Member Is Offline
Mood: Energetic
|
|
| Quote: Originally posted by stibium | Phosphorescent materials based on alkaline earth sulfides and zinc sulfide
From left to right:
SrS:Eu
CaS:Eu,Ce,Tm
SrS:Bi
CaS:Bi,Ag
ZnS:Cu
I explain how I made them at the thread "making phosphorescent materials"
|
Beautiful!
Be good, otherwise be good at it
|
|
|
Sulaiman
International Hazard
Posts: 3721
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
Very nice
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Ok. I am indpired. I am going to have tobread that procedure.
|
|
|
| Pages:
1
..
68
69
70
71
72
..
77 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
