HDTenEightyP/NetNews huggingface dataset:
From: ralf@ark.abg.sub.org (Ralf Stephan)
Newsgroups: sci.chem
Subject: Re: 1,4-dichloro-2-butyne
Date: 11 Sep 92 10:59
Organization: Magick Shoppe, Gurth City

> [...] My expectations for this group have gone unmet. So I
> officially sign-off of this group and am submitting my proposal for
> sci.chem.organic and I will make it very clear in my charter that ANYTHIN
> goes in discussion and no information is "forbidden fruit".

This is sad.  I also didn't expect that ignorance from the group.
It neutralizes the idea of global information exchange.
 
>  I now continue my task of digging through myriad journals unaided by
> technology. (At least not at this end.)

Best wishes.  Sorry that I couldn't help, but I'm not at an university.

--ralf
Newsgroups: sci.chem
From: chrism@col.hp.com (Chris Magnuson)
Subject: Isomers Heuristic?
Date: Tue, 8 Sep 1992 00:05:07 GMT
Organization: HP Colorado Springs Division

Has anyone come up with a heuristic that would give the count of the number
of isomers possible for a given molecular formula?  I'm thinking that if
you are given a molecular formula of C3 H8 O you would somehow be able to
tell that there are 3 isomers (without drawing them).

Has this problem been solved?

chrism@col.hp.com
From: ulrich@galki.toppoint.de (Ulrich Gall)
Newsgroups: sci.chem
Subject: Re: Sparking grapes
Date: 4 Sep 92 17:32:20 GMT
Organization: private UUCP site, Kiel, Germany

asnd@msr.triumf.ca (Donald Arseneau) writes:
>
> >pk03+@andrew.cmu.edu (Paul Karol) writes:
> >
> >>Why not stop posting so many guesses on why split grapes sparkle in a
> >>microwave and do some experiments?  Let's see some science.
>
> I missed the original post, but chopped onions also spark in a microwave
> oven.

I wrote this (abt the onions) four weeks ago. What's really interesting is
that even if you put a glass of water in the oven along with the onions, they
still spark. It's not just a matter of 700 Watts pumped into an ounce of
onions. There must be something in the onions (and probably the grapes, too)
that causes them to spark.

If anyone has the equipment and time to find out, please do so! (As someone
suggested before: Let's see some science)


Ulrich Gall, Seebrooksberg 2, W-2300 Klausdorf, Germany
Tel.: +49-431-790292, EMail: ulrich@galki.toppoint.de
Xref: sparky sci.chem:3460 sci.energy:4260
From: tony2@prefect.uucp (21131-gozdz)
Newsgroups: sci.chem,sci.energy
Subject: Re: Can a 'dead' nicad be recharged?
Date: 9 Sep 92 21:53:53 GMT
Organization: Bellcore, Livingston, NJ

Just a few additions/corrections on the chemistry and
failure mechanism of NiCd batteries:

1. modern NiCd batteries use nickel oxyhydride NiO(OH) for
the positive electrode, a solution of KOH for the
electrolyte, and cadmium for the negative electrode.
The overall charge/discharge reaction is 

2 NiO(OH) + 2 Cd + 2 H2) <====> 2 Ni(OH)2 + 2 Cd(OH)2

2. Since these batteries are difficult to scale up, 
the largest cells are the D-size (except for some space
applications). As somebody noted here, they are usually
of the jelly-roll type.

3. The output voltage of a single cell is that of the NiCd
couple and is about 1.3 V, which is close to the
decomposition voltage of water, 1.2 V. The evolved gas
(O2 and H2) is catalytically recombined, but all cells
include safety valves just in case (malfunction,
overcharge, abuse).

4. The NiCd batteries exhibit high self-discharge rates
during storage (~20%/month), but cycle life is
excellent (>1,000 cycles on deep discharge).

5. Among the main failure mechanisms of NiCd batteries
are i) the Cd dendrite growth ("fingers") at the Cd
negative electrode which may result in short circuiting
the cell; ii) hydrolysis and oxidation of the nylon
separator in the standard cells, especially at t>55oC
(strong base!). Newer cells include polypropylene
separators and their lifetime is estimated at 7 years
at 55oC.

6. The "memory effect" is especially visible at higher
current discharge rates. Its cause is the formation of
a passivating, electrochemically inactive intermetallic 
alloy, Ni5Cd22, at the negative electrode during the discharge. 
This reduction in capacity persists on subsequent
cycles as long as the cut-off discharge voltage remains
greater than 1 V. However, a deep discharge down to 0.5 V 
results in decomposition of the Ni5Cd22 alloy and a
complete reactivation of the negative electrode
material. If this does not restore the cell's capacity,
"shocking" it by high voltage pulses may result in an
explosion and the contamination of the room with
cadmium (it wouldn't be a lab, would it?)

Tony

-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Antoni S. Gozdz                tel  (908) 758-2931  |  Bellcore  NVC 3X-261
tony2@prefect.cc.bellcore.com  FAX  (908) 741-2891  |  Red Bank, NJ 07701, USA
                           no .sig, strictly business
Newsgroups: sci.chem,rec.autos,rec.autos.tech,misc.consumers,sci.environment,talk.environment
From: knapp@spot.Colorado.EDU (David Knapp)
Subject: Re: Carburetors, gasoline, and why I don't recycle
Organization: University of Colorado, Boulder
Distribution: na
Date: Sat, 5 Sep 1992 05:35:09 GMT

In article <dhalliwe.715631742@muskwa.ucs.ualberta.ca> userDHAL@mts.ucs.UAlberta.CA (David Halliwell) writes:
>knapp@spot.Colorado.EDU (David Knapp) writes:
>
>>In article <dhalliwe.715546595@muskwa.ucs.ualberta.ca> userDHAL@mts.ucs.UAlberta.CA (David Halliwell) writes:
>
>>Right, but the original poster did not metion the energy required to 
>>initiate motion, which is rather important, right?
>
>     ...but you can get all that energy back (technology limiting) when
>you stop the vehicle at the new location, right?
> 
>     Unless the trip is an extremely short one, the energy required to
>initiate motion is rather small in comparison to the energy required
>to overcome friction, drag, etc. For a 2000kg car, it only takes 400kJ to
>accelerate it to 20m/s. This energy would keep a 100W light bulb running
>for not much more than an hour. On a one-hour car trip, the *headlights*
>would use more energy than this.


Yep, your math checks. Good job.  But what would you guess is the amount
of energy/time lost to friction of the wheel bearings etc? (forget air
resistance)


-- 
David Knapp                                      University of Colorado, Boulder
Perpetual Student                                   knapp@spot.colorado.edu
Newsgroups: sci.chem,sci.energy
From: cfthb@ux1.cts.eiu.edu (Howard Black)
Subject: Re: 1,4-dichloro-2-butyne
Date: Tue, 15 Sep 1992 12:53:43 GMT
Organization: Eastern Illinois University

In article <1992Sep15.060528.585@mnemosyne.cs.du.edu> aankrom@nyx.cs.du.edu (Anthony Ankrom) writes:
>
> I'm not leaving. I'm too stubborn. 
>  
> So how come nobody answered my question about unsymmetically
>N-substituted, 2-oxo benzimidazoles? Do I have to go dig through the

    Maybe because no one has any experience with that specific type of
molecule (no one on the net, that is).

>Chemical Abstracts Ring Index?

    Better you than me, since you're the one who's interested.  Sheeesh.
-- 
   ******************************************************************
     Howard Black                             cfthb@ux1.cts.eiu.edu
     Department of Chemistry                  Eastern Illinois Univ. 
Newsgroups: sci.chem,rec.autos,rec.autos.tech,misc.consumers,sci.environment,talk.environment
From: rickert@cco.caltech.edu (Keith Warren Rickert)
Subject: Re: Carburetors, gasoline, and why I don't recycle
Organization: California Institute of Technology, Pasadena
Distribution: na
Date: Sat, 5 Sep 1992 12:31:45 GMT

In <1992Sep5.053509.22476@ucsu.Colorado.EDU> knapp@spot.Colorado.EDU (David Knapp) writes:

>>     Unless the trip is an extremely short one, the energy required to
>>initiate motion is rather small in comparison to the energy required
>>to overcome friction, drag, etc. For a 2000kg car, it only takes 400kJ to
>>accelerate it to 20m/s. This energy would keep a 100W light bulb running
>>for not much more than an hour. On a one-hour car trip, the *headlights*
>>would use more energy than this.


>Yep, your math checks. Good job.  But what would you guess is the amount
>of energy/time lost to friction of the wheel bearings etc? (forget air
>resistance)

This was i believe the point of the original post.....that there is a large
amount of energy usage that is going to be very hard to estimate, 
especially for someone just sitting at home with their physics books or
whatever.
From: rzepa@ic.ac.uk (Henry Rzepa)
Newsgroups: sci.chem
Subject: Publishability of Mechanics Calculations
Date: 10 Sep 92 10:25:06 GMT
Organization: Department of Chemistry, Imperial College
X-UserAgent: Nuntius v1.1.1d9
X-XXMessage-ID: <A6D4E0F5070150FD@macb.ch.ic.ac.uk>
X-XXDate: Thu, 10 Sep 92 11:24:37 GMT

Prof Kenny Merz (merz@retina.chem.psu.edu)
is soliciting opinions about whether molecular mechanics calculations
which have used non-published parameters (in house, proprietary,
developmental
etc) can be quoted in scientific journals. 

Does anyone have any opinions?
_____________________________________________
|  Dr Henry S Rzepa.                       Tel:   +44  71 225 8339 
|  Department of Chemistry           Fax:   +44 71 589 3869  
|  Imperial College                        Email: rzepa@ic.ac.uk
|  LONDON SW7 2AY
| Sent using Eudora 1.3b46.                 
_____________________________________________
Organization: Penn State University
Date: Tue, 15 Sep 1992 15:47:54 EDT
From: MICHELLE GLADFELTER <MXG135@psuvm.psu.edu>
Newsgroups: sci.chem
Subject: Tables of physical data

       Does anyone know where I may find tables of physical data written
       in standard ascii format?  I would appreciate any help you can offer.
       Thanks in advance.......
Newsgroups: sci.chem
From: wlg1679@uxa.cso.uiuc.edu (Weiti Lee )
Subject: Pt-H bond energy
Organization: University of Illinois at Urbana
Date: Fri, 11 Sep 1992 21:03:11 GMT


Hi, 

I would like to know the bond energy between a single Platinum atom and a 
single hydrogen atom. I know this is probably very easy to find, but I just
can't seem to find it. Can anybody help me? Please email me, thanks. Any 
suggestions of references are welcome too.

Wei Ti Lee
email: wlg1679@uxa.cso.uiuc.edu
       wtlee@aries.scs.uiuc.edu

Newsgroups: sci.chem,rec.autos,rec.autos.tech,misc.consumers,sci.environment,talk.environment
From: brad@buck.viewlogic.com (Bradford Kellogg)
Subject: Friction (was Re: Carburetors, gasoline, and why I don't recycle)
Originator: brad@buck
Organization: Viewlogic Systems, Inc.
Distribution: na
Date: Tue, 8 Sep 1992 22:54:12 GMT


In article <Bu4v2x.EBo@quake.sylmar.ca.us>, brian@quake.sylmar.ca.us (Brian K. Yoder) writes:
|> In article <Bu0KzB.6w1@news.cso.uiuc.edu> cec35848@uxa.cso.uiuc.edu (Chuck Carroll) writes:
|> >knapp@spot.Colorado.EDU (David Knapp) writes:
|> >
[stuff about friction and equations deleted]
|> >
|> >Without friction, it would take only an infintesimally small force to
|> >start the car moving, and once you did, it could go indefinitely.  The
|> >same goes for the other equations.
|> 
|> Learn some physics, eh?  How about some common sense while you are at it?
|> Have you ever heard os a thing called air resistance?
|> 
|> --Brian
|> 
Physics and common sense tell you that air resistance is friction. Friction
is also produced by the way some folks respond to other's posts :-) 
Xref: sparky sci.chem:3453 sci.energy:4254
From: kwyatt@ccscola.Columbia (Kershner Wyatt)
Newsgroups: sci.chem,sci.energy
Subject: Re: Can a 'dead' nicad be recharged?
Date: 9 Sep 92 12:33:57 GMT
Organization: NCR Corp, E&M-Columbia, Columbia, SC

In article <1992Sep8.171432.1@eis.dofasco.ca> fraser_h@eis.dofasco.ca writes:
>with 2 sets of nicads, one of which will hold a partial charge,
>the other will not hold any charge (so I'm told by a local
>surplus supply store where I had the batteries tested). The
>batteries are about $70 each... is there any way they can be

The discharge fully, recharge fully, discharge fully method works.  I have
recovered a number of batteries this way.  What the other folks who responded
left out was PATIENCE.  Discharge, recharge, discharge, recharge, ad nauseum.

I know this will probably trigger a bunch of comments, but I have found the
best way to get a long battery charge life out of the NiCads is to use them the
same way (Discharge fully, then recharge).  Now if I could teach that to people
who borrow the laptop and plug the thing in everywhere for a month (So, it
will be fully charged.  BANG!, BANG! Sound of body dropping)  I spend the
next month recovering my battery life.
-- 
Kershner Wyatt
kwyatt@ccscola.ColumbiaSC.ncr.com

My opinions are my own and aren't necessarily my employer's.
Newsgroups: sci.chem
From: brekke@gaia.grida.no.grida.no (Bente Brekke)
Subject: lilium tirginum
Organization: University of Oslo
Date: Thu, 10 Sep 1992 12:03:16 GMT


My boyfriends sister is writing a paper on the toxic and medical effects 
of several garden plants. She is especially interested in information on 
andreferences to the Tiger lilly (lilium tigrinum), particularly the 
chemical composition and effects of it's toxic substances. Thanks for any 
relevant info! Please reply directly to my E-mail address.

Kind regards
      Bente


  +--------------------------------------------------------------------+
  | Bente Brekke [brekke@grida.no]                                     |
  | Systems Analyst                             +---+---+  UNEP/GRID   |
  | GRID - Arendal                              | G | R |  Global      |
  | P.O.Box 1602 Myrene                         +---+---+  Resource    |
  | N-4801 Arendal, NORWAY                      | I | D |  Information |
  | Phone: +47-41-35650; Fax: +47-41-35050      +---+---+  Database    |
  +--------------------------------------------------------------------+
From: whitbeck@equinox.unr.edu (Michael Whitbeck)
Newsgroups: sci.chem
Subject: Re: HELP : Slurries
Date: 9 Sep 92 22:49:26 GMT
Organization: University of Nevada, Reno


 The originator (mara?) wrote that in drying a solid, making a
 slurry, redrying and remaking the slurry (did I get that
 right?) the consistency changed despite careful measurement.
 Mara wants to know how/why this is.

 To give a specific answer I would need to know as a minimum the
 drying temperatures (common ones are 50C, 105C, and 180C) and
 the material. But in general the cause is most likely a change
 in the structure of the solids on drying. This alteration may
 occur at two levels:
	1. at the molecular level- sealing pore openings,
	collapsing cages- some clays undergo such permanent
	changes even as low as 50-65C on prolonged heating.
	2. at the bulk level- very common to alter the state of
	dispersion. as the slurry dries aggregates may form
	which are much larger than the original particle size
	(which you do not necessarily get back on addition of
	water). (1) can also affect (2) as well.

If you want to get the same consistency back consider adding a
grinding/sizing step in the process. You might also consider
adding agents to help redisperse the particles in the slurry.

Hope this helps.
Mike

Newsgroups: sci.chem
From: tgcpwd@rwc.urc.tue.nl (Wim van Dorst)
Newsgroups: sci.chem
Subject: Re: Where is the sci.chem faq?
Date: 9 Sep 92 11:50:50 GMT
Reply-To: tgcpwd@urc.tue.nl
Organization: Eindhoven University of Technology, The Netherlands

John Stewart Pinnow writes:
>What ftp site has the sci.chem faq?

I have been following this newsgroup for months now, and I can't recall
a FAQ-list. I wondered about that myself, but after short consideration
I dismissed the idea of making one myself because there are hardly any
recurring questions in this newsgroup.

Chemistry apparently is such a wide field of interest, that people can
come up with new questions continually.

Met vriendelijke groeten, Wim van Dorst
Newsgroups: sci.chem
From: ttt@cmr.no (Tore Tjomsland)
Subject: Dielectric Spectroscopy
Organization: Christian Michelsen Research AS
Date: Tue, 8 Sep 92 11:24:54 GMT

Is there anybody reading this newsgroup who
work on dielectric spectroscopy ?

Tore Tjomsland
ttt@cmr.no 

Newsgroups: sci.chem
From: ivan@erich.triumf.ca (Ivan D. Reid)
Subject: Re: Research Products International (address wanted)
News-Software: VAX/VMS VNEWS 1.41    
Organization: TRIUMF: Tri-University Meson Facility
Date: Mon, 14 Sep 1992 08:16:00 GMT

In article <agpbrs.8@pnv.dsir.govt.nz>,
	 news@massey.ac.nz (USENET News System) writes...
> 
>I am trying to contact an american company called RPI (as above) which was 
>thought to be based in chicago. The international directory system however 
>turns up nothing  ... does anyone know of them ? where are they ??
> 
	Research Products International Corp.,
	410 N. Business Center(sic) Dr.,
	Mt. Prospect, IL 60056
	Ph (708) 635-7330  Toll-Free (800) 323-9814
	FAX (708)  635-1177

	This is from the "Product Guide" published with the August issue of
"Physics Today".  A very helpful publication.

Ivan Reid, Paul Scherrer Institute, CH.     			ivan@cvax.psi.ch
Newsgroups: sci.chem,sci.energy
From: tony2@prefect.uucp (21131-gozdz)
Subject: Re: Can a 'dead' nicad be recharged? a correction
Organization: Bellcore, Livingston, NJ
Date: Wed, 9 Sep 92 23:15:28 GMT

In article <1992Sep9.215353.4774@porthos.cc.bellcore.com> tony2@prefect.uucp (21131-gozdz) writes:
>Just a few additions/corrections on the chemistry and
>failure mechanism of NiCd batteries:
>
>1. modern NiCd batteries use nickel oxyhydride NiO(OH) for
                                     ^^^^^^^^^^
self-correction: of course, it should be oxyhydroxide

>the positive electrode, a solution of KOH for the
>electrolyte, and cadmium for the negative electrode.
>The overall charge/discharge reaction is 
>
>2 NiO(OH) + 2 Cd + 2 H2) <====> 2 Ni(OH)2 + 2 Cd(OH)2
>
Tony
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Antoni S. Gozdz                tel  (908) 758-2931  |  Bellcore  NVC 3X-261
tony2@prefect.cc.bellcore.com  FAX  (908) 741-2891  |  Red Bank, NJ 07701, USA
                           no .sig, strictly business
Newsgroups: sci.chem
From: jrauser@epx.cis.umn.edu (Johnny R.)
Subject: 3D modeling software
Keywords: help me
Organization: University of Minnesota
Distribution: usa
Date: Tue, 15 Sep 1992 16:41:49 GMT

Hi all,

I am looking for a low or no cost 3D molecular modeling software for PC
compatibles.  It should be able to model something on the order of
40-60 atoms.  So, send me a message telling me what the best modeling
software you have ever seen is.

Thanks in advance!

John Rauser
jrauser@epx.cis.umn.edu
jmr@ddt.biochem.umn.edu

-- 
John Rauser
jrauser@epx.cis.umn.edu
From: Ligon@macgw1.ge.com (Woody Ligon)
Newsgroups: sci.chem
Subject: Re: Mass Spec: Formula
Date: 10 Sep 92 18:09:42 GMT
Distribution: usa
Organization: GE-CRD

In article <1992Sep10.091050.23541@hippo.ru.ac.za>, sppp@hippo.ru.ac.za (Prof P Piacenza) writes:
> 
> I am looking for the formula used to generate tables of accurate
> masses for use with mass spectrometry.  Can anyone help? Please e-mail.
> 
> -- 
> 	 L.Piacenza - Chemistry Department - University of Transkei
> 	 Internet: sppp@hippo.ru.ac.za  Tel. 27-471-3022384
> 	 Internet: chpp@unitrix.utr.ac.za
> 
> 

As far as I know there is no "formula".  It is simply a matter of looking up 
the precise mass of each isotope present in the "molecular ion", multiplying 
by the number of atoms of that isotope present and then adding up the result 
of this process for all of the elements present.  

For example H2O:  H= 1.0078246   2H= 2.015649
		                O= 15.99491

  2.015649 + 15.99491 =  18.01055 (precise mass of water)

Obviously using iteration combined with a look up table, it is trivial to
generate tables of these values for various molecular formuli using a 
computer.  Such tables are commercially available. Various algorithms which
accomplish this process are part of all mass spec data systems intended for
use with high resolution mass spectrometers.  These algorithms are also
smart enough to consider valence when computing potential elemental
compositions to fit an unknown. 

Woody Ligon
Standard Disclaimer Applies.
From: markr@sound.cts.com (Mark B. Reinhold)
Newsgroups: sci.chem
Subject: Iron Pots
Date: Mon, 14 Sep 92 17:39:52 PDT
Organization: SDCT 1-619-461-3415

I have a friend who has a bunch of pots. These are cast iron,
and they have a bunch of black spots on them.

I thoght that these would be oxidized spots and that some sort
of weak or strong acid would resolve this problem.

Well, it has not, and I am now looking for any or all help

Thanks
Mark

Newsgroups: sci.chem
From: keni@uhunix.uhcc.Hawaii.Edu (Ken Ikeda)
Subject: Organics on Dionex AS-4A Column
Summary: Need help finding methods  
Keywords: HPLC 
Organization: University of Hawaii at Manoa
Date: Wed, 9 Sep 1992 02:03:37 GMT

I was just wondering if anyone had any methods for detecting organics
on a dionex hplc. We're currently running a dionex ion-pac AS4A column
with a anion micro-membrane suppressor to do anion work, but we'd like
to look for organics and can't find any methods in our library. We tried
contacting dionex but no luck. We had heard that it was possible to
find organics on the AS4A column but we haven't been able to find out
what eluants to use. By the way, we are using a conductivity detector.

If anyone has any info that may be of some help please e-mail me at
	keni@uhunix.uhcc.hawaii.edu
or post if you can't mail, I check both daily...

Thanks in advance...

Ken Ikeda
Physical Sciences Technician
University of Hawaii at Hilo

Newsgroups: sci.chem
From: howard@netcom.com (Howard Berkey)
Subject: VX
Date: Wed, 16 Sep 92 01:00:22 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 

In my previous post I made a statement about dow dupont etc. making war gases.
I realized that I didn't know for sure which large corporations actually
did produce VX, GB, tabun, sarin, etc.  I would like to know.  If anyone
does, please email me. (I haven't looked in the Merck index.. if it's there
sorry for the rtfm.)

I dislike political correctness trends but those are companies I would like
to avoid.

-Howard

Disclaimer: I don't accuse any specific company of making nerve gas.
-- 
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Howard Berkey						howard@netcom.com
"Jesus Christ, How many people does it TAKE to kill the President?"
		-John Dillinger, in _Illuminatus!_
Newsgroups: sci.chem,sci.energy
From: adamsd@crash.cts.com (Adams Douglas)
Subject: Re: Can a 'dead' nicad be recharged?
Date: 11 Sep 92 00:20:19 GMT

 I believe this is why Hewlett Packard decided to stop selling calculators 
with rechargeable NiCads. It is much easier to buy new batteries every few
years than cope with short lifetimes of NiCads.

Of course, when you're running drill motors instead of ultra-low-power
Silicon-on-Sapphire chips, this logic does not apply.
From: fsmith@morgan.ucs.mun.ca (Frank Smith)
Subject: Re: I2 + I-/I3- equilibrium
Summary: Replacement for CCl4 
Keywords:  carbon tetrachloride trichloroethane 
Organization: Memorial University of Newfoundland
Date: Mon, 14 Sep 1992 13:30:35 GMT

In article <1992Sep4.101506.3719@darwin.ntu.edu.au> b_duke@darwin.ntu.edu.au (Brian Duke) writes:
>Some time ago I posted a question to sci.chem about replacing carbon 
>tetrachloride in the partition experiment to determine the I2 + I-/I3- 
>equilibrium. 
>>Carbon tetrachloride is now a "not advised" chlorocarbon. What is the 
>>best alternative solvent?

At our university several years ago we replaced carbon tetrachloride and
chloroform by 1,1,1 trichloroethane which at the time was recommended as
being less harmful than the other solvents. It has a higher boiling point
than methylene dichloride but still has ozone-depleting properties, which
make it less attractive than hydrocarbons. Still, if you want a higher boiling
halogenated solvent to dissolve iodine, it will do the job. It boils at 74 deg
C and I see that an alternative name is methylchloroform! But I think it is much
preferable to chlorofluorocarbons suggested by some.

Newsgroups: sci.chem,sci.energy