schrodingers_hat
Harmless
Posts: 9
Registered: 5-10-2013
Member Is Offline
Mood: No Mood
|
|
Best way to clean tar (chemically)
What ways do you experts have in mind to chemically clean tarry and other unwanted byproducts from glassware (by chemically, I mean no scrubbing or
physical removal of the substance)
Do you just barrage it with strong acids or bases and polar and non polar substances until something does the trick, or is there a more methodical
formula?
|
|
|
leu
Hazard to Others
Posts: 368
Registered: 13-10-2005
Member Is Offline
Mood: No Mood
|
|
Using:
http://www.sciencemadness.org/talk/search.php?fid=2
would have found:
http://www.sciencemadness.org/talk/viewthread.php?tid=7277&a...
as well as many other threads concerning cleaning glassware  The end results
from the effort applied 
Chemistry is our Covalent Bond
|
|
|
arkoma
Redneck Overlord
Posts: 1763
Registered: 3-2-2014
Location: On a Big Blue Marble hurtling through space
Member Is Offline
Mood: украї́нська
|
|
cleaning a round bottom flask through a 24mm neck is a pain in the arse no matter HOW you slice it.
"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
|
|
|
mnick12
Hazard to Others
Posts: 404
Registered: 30-12-2009
Location: In the lab w/ Dr. Evil
Member Is Offline
Mood: devious
|
|
Potassium hydroxide in ethanol is an excellent way to dissolve organic residue. Let it soak for one or two days, but just be careful because it will
slowly etch the glass.
|
|
|
hissingnoise
International Hazard
Posts: 3940
Registered: 26-12-2002
Member Is Offline
Mood: Pulverulescent!
|
|
I'd have thought hot toluene would do the trick?
|
|
|
schrodingers_hat
Harmless
Posts: 9
Registered: 5-10-2013
Member Is Offline
Mood: No Mood
|
|
Thanks for all the suggestions!
|
|
|
plante1999
International Hazard
Posts: 1936
Registered: 27-12-2010
Member Is Offline
Mood: Mad as a hatter
|
|
I really like boilling hot chromosulphuric acid to clean stained glass. It brings it like new.
I never asked for this.
|
|
|
arkoma
Redneck Overlord
Posts: 1763
Registered: 3-2-2014
Location: On a Big Blue Marble hurtling through space
Member Is Offline
Mood: украї́нська
|
|
This Just In
Was distilling Juniper berries this morning---lots of splooge in my flask. Used a phosphoric acid bathroom cleaner with a few drops of dawn dish soap
added--Voila--clean glass.
"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
|
|
|
Texium
Administrator
Posts: 4619
Registered: 11-1-2014
Location: Salt Lake City
Member Is Online
Mood: PhD candidate!
|
|
I have a nice curvy flask cleaning brush that works very well for cleaning both round-bottom and Erlenmeyer flasks. It's really flexible, so it'll go
into the flask easily and will conform to the shape of the sides to get all surfaces. Here's where I got it:
http://www.cynmar.com/ProductDetail/12030242_Bristle-Flask-B...
They have a few different sizes
Also, arkoma, what were you doing with the juniper berries? I have a ton of juniper trees around my house, and if there's anything
cool that can be made with them I'd be very interested in doing that.
[Edited on 6-22-2014 by zts16]
|
|
|
hyfalcon
International Hazard
Posts: 1003
Registered: 29-3-2012
Member Is Offline
Mood: No Mood
|
|
Look up Gin additive.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
