Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Identifying Tetrahydrofuran (THF)
denatured
Hazard to Others
***




Posts: 151
Registered: 7-8-2004
Location: -
Member Is Offline

Mood: HCl 50%?

[*] posted on 17-9-2012 at 08:15
Identifying Tetrahydrofuran (THF)


What are the qualitative tests for Tetrahydrofuran?

I just want to know whether the liquid in the bottle is THF or not.
View user's profile View All Posts By User
kristofvagyok
National Hazard
****




Posts: 659
Registered: 6-4-2012
Location: Europe
Member Is Offline

Mood: No Mood

[*] posted on 17-9-2012 at 10:16


Density? Boiling pont? Water tests? Smell? THF has a really characteristic odor, just love it.

Not usually used by home chemists, but NMR will tell it in no time(:




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."
View user's profile Visit user's homepage View All Posts By User
unionised
International Hazard
*****




Posts: 5123
Registered: 1-11-2003
Location: UK
Member Is Offline

Mood: No Mood

[*] posted on 17-9-2012 at 13:16


Mixes with water, but not salt water, and dissolves PVC is a fairly unusual group of characteristics.

What do you have available with which to test it?

View user's profile View All Posts By User
denatured
Hazard to Others
***




Posts: 151
Registered: 7-8-2004
Location: -
Member Is Offline

Mood: HCl 50%?

[*] posted on 23-9-2012 at 08:24


It is obvious to me now that what I have is some sort of blend (I bought it from an asshole) :mad:

I wanted to use it to make some PVC glue but there was no activity (attack) on UPVC pipe shreds soaked in it.

@kristo: I don't think BP would be of any value in this situation because it is supposed to have impurities (far from lab grade).

If I have access to NMR, I'd also have access to quality chemicals. :)

Knowing smells of different chemicals is _key_ when buying from unreliable sources.

@unionised: I didn't know about water. what chems do I need (for future ref)?
View user's profile View All Posts By User
kristofvagyok
National Hazard
****




Posts: 659
Registered: 6-4-2012
Location: Europe
Member Is Offline

Mood: No Mood

[*] posted on 23-9-2012 at 09:14


Quote: Originally posted by denatured  
I wanted to use it to make some PVC glue but there was no activity (attack) on UPVC pipe shreds soaked in it.


THF won't dissolve PVC pipes. PVC "glue" is made by soaking PVC shavings or more preferably powder in THF for weeks. It will dissolve faster if it get's boiled up.




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."
View user's profile Visit user's homepage View All Posts By User

  Go To Top