ORGLIST: RE: Everybody Digest, Vol 26, Issue 12

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From: Deepak Shukla (DEEPAK.SHUKLA2$##$ranbaxy.com)
Date: Mon Oct 23 2006 - 01:28:31 EDT



Dear friends
For temperature levels we are discussing it may be advisable to use=
 secondary cooling system ( For lab scale - low temperature bath ) .
LIN may be primary utility with secondary utility being a solvent /=
 synthetic fluid thus avoiding need of mixing the two.
For very low temperature applications one may go for super critical fluids.

Regards
Deepak



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Subject: Everybody Digest, Vol 26, Issue 12

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Today's Topics:

   1. re: low temperature reactions (Jian Wang)
   2. Re: low temperature reactions (hai zhang)
   3. Re:low temperature reactions (pooja mehra) (Shameem Ara Begum)


----------------------------------------------------------------------

Message: 1
Date: Fri, 20 Oct 2006 13:31:56 -0300
From: Jian Wang <jwang376$##$uwo.ca>
Subject: ORGLIST: re: low temperature reactions
To: everybody$##$orglist.net
Message-ID: <a812dd712fe3a.4538cfcc$##$uwo.ca>
Content-Type: text/plain; charset="utf-8"

I am just curious to know how can one generate (and esp. maintain) a=
 temperature, say below -78, by mixing liquid N2 and a organic solvent.=
 Obviously it's not possible to saturate the solvent with N2... it'll just=
 freeze instead.

----- Original Message -----
From: everybody-request$##$orglist.net
Date: Friday, October 20, 2006 1:00 pm
Subject: Everybody Digest, Vol 26, Issue 11
To: everybody$##$orglist.net

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> Today's Topics:
>
>    1.  low temperature reactions (pooja mehra)
>    2.  HELPREQ: azeotropic mixture (Michael Engel)
>    3. re: low temperature reactions (Mustapha Ouali)
>
>
> -----------------------------------------------------------------
> -----
>
> Message: 1
> Date: 20 Oct 2006 09:37:34 -0000
> From: "pooja mehra" <poomehra$##$rediffmail.com>
> Subject: ORGLIST: low temperature reactions
> To: everybody$##$orglist.net
> Message-ID: <20061020093734.8823.qmail$##$webmail7.rediffmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
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> Dear  all,
>  �Can anyone tell me the temperatures that can be attained
> by mixing liquid nitrogen with various solvents.
>
> Thanks
> pooja
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> Message: 2
> Date: Fri, 20 Oct 2006 14:42:22 +0900
> From: "Michael Engel" <mkengel$##$gmail.com>
> Subject: ORGLIST: HELPREQ: azeotropic mixture
> To: "CHEMICAL INFORMATION SOURCES DISCUSSION LIST"
> <chminf-l$##$listserv.indiana.edu>, OrgList
> <everybody$##$orglist.net>Message-ID:
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> Cross-posted to CHMINF and ORGLIST.
>
> I would like to know if DME (1,2-dimethoxyethane) and water make an
> azeotropic mixture.
> I didn't find corresponding data on the internet and in the CRC
> handbook.Please tell me where else I could look.
> Thank you in advance
>
> Michael Engel
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 20 Oct 2006 16:42:26 +0200 (CEST)
> From: Mustapha Ouali <mouali$##$ulb.ac.be>
> Subject: re:ORGLIST: low temperature reactions
> To: pooja mehra <poomehra$##$rediffmail.com>,everybody$##$orglist.net
> Message-ID: <20061020144226.DDC8323B$##$bonito.ulb.ac.be>
> Content-Type: text/plain; charset="ISO-8859-1"
>
> Dear Pooja,
> I attained -70�C by mixing and stirring liquid nitrogen plus=
 ethanol.
>
>
>
> >Dear  all,
> > �Can anyone tell me the temperatures that can be attained by
> mixing liquid nitrogen with various solvents.
> >
> >Thanks
> >pooja
> >
> >
>
>
> Mustapha Ouali
> Universite Libre de Bruxelles
> Structure et Fonction des Membranes Biologiques (SFMB)
> Bd du Triomphe - C.P. 206/2
> 1050 Bruxelles
> Tel.+ 32-2-650.53.66
> Fax.+ 32-2-650.53.82
> E-mail: mouali$##$ulb.ac.be
>
>  
>  
>  
>  
>
>
>
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Message: 2
Date: Fri, 20 Oct 2006 10:12:41 -0700 (PDT)
From: hai zhang <haizhang67$##$yahoo.com>
Subject: Re: ORGLIST: low temperature reactions
To: pooja mehra <poomehra$##$rediffmail.com>, everybody$##$orglist.net
Message-ID: <20061020171241.68348.qmail$##$web90501.mail.mud.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"

Go to http://ecompound.com/Reaction%20reference/reaction_index.htm, check=
 reference in Org. Chem. There is a table that tells you the common=
 condition to generate a low temp. bath. -160oC might be the lowest you can=
 have.
  
  Good luck!

pooja mehra <poomehra$##$rediffmail.com> wrote:
    Dear all,
  Can anyone tell me the temperatures that can be attained by mixing liquid=
 nitrogen with various solvents.

Thanks
pooja



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Message: 3
Date: Fri, 20 Oct 2006 18:03:27 -0700 (PDT)
From: Shameem Ara Begum <meem_sust$##$yahoo.com>
Subject: ORGLIST: Re:low temperature reactions (pooja mehra)
To: everybody$##$orglist.net
Message-ID: <20061021010327.85088.qmail$##$web51612.mail.yahoo.com>
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Dear Pooja
you can find here for low temperature bath.

http://www.chem.rochester.edu/~nvd/reactionnotes2.html
wishes






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> 1. low temperature reactions (pooja mehra)
> 2. HELPREQ: azeotropic mixture (Michael Engel)
> 3. re: low temperature reactions (Mustapha Ouali)
>
>
>
----------------------------------------------------------------------
>
> Message: 1
> Date: 20 Oct 2006 09:37:34 -0000
> From: "pooja mehra" <poomehra$##$rediffmail.com>
> Subject: ORGLIST: low temperature reactions
> To: everybody$##$orglist.net
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> <20061020093734.8823.qmail$##$webmail7.rediffmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear all,
> &#65533;Can anyone tell me the temperatures that
can be
> attained by mixing liquid nitrogen with various
> solvents.
>
> Thanks
> pooja
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