HDTenEightyP/NetNews huggingface dataset:
From: mike@uhunix.uhcc.Hawaii.Edu (Mike W. Burger)
Newsgroups: sci.chem
Subject: Gold + ???
Date: 24 Jul 92 01:28:39 GMT
Distribution: usa
Organization: University of Hawaii at Manoa


	On our local PBS station there was the first of a multi-part
program on Columbus.  It began with a great discussion of the geopolitics
of the 15th century.  Gold was, of course, involved.
	They showed scenes of gold being smelt at a mine in Africa. The
mine apparently a hard rock mine dating back before the 15th century.
The smelting occured in a furnace that was tapped for liquid into about
a 10 liter crucible, apparently clay.  This crucible was then placed in
a vertical cylinder furnace for more intense heating of the liquid metal.
	After cooling, the crucible was dumped onto the floor.  What
came out was surprising.  The top 80 percent was a slug of some metal,
silver in color.  Below was a button of gold.  It is not surprising that
almost any other metal except platinum would float on gold.
	However:  What was the other metal?   What metal will float
on gold, make a two phase system like hexane and water, not alloy with
gold, have a compatable melting point and not adhere to gold?  Was this
metal co-refined from the ore or added perhaps to liquid-liquid extract
other metals from the gold by relative solubility?

	One guess was tellurium which would look silvery when solid,
but this boils below the melting point of gold and 20 pounds of
boilding tellurium would reduce the foundry staff quite quickly.
Still, gold telluride is a common gold ore so it was not a bad guess.
It could have been iron added as iron oxides, but I do not know
the solubility of iron in gold.  I cannot seem to find a table
of solubilities of one metal in another that would help sort this
question out.

mike@uhunix.uhcc.hawaii.edu
From: che238n@vaxc.cc.monash.edu.au
Newsgroups: sci.chem
Subject: PCModel
Date: 24 Jul 92 15:26:45 +1000
Organization: Computer Centre, Monash University, Australia

I would like to hear opinions of PCModel by Serena Software

Department of Chemistry
Monash University
Australia
Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: sci.chem
Date: Tue, 21 Jul 1992 14:30:22 -0400 
From: Paul Karol <pk03+@andrew.cmu.edu>
Subject: Re: moderator how is one appointed?



   I cast my vote AGAINST moderation.  (No pun intended.)

Paul J. Karol
Nuclear Chemist


Newsgroups: sci.chem
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: N2O preparation
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Sun, 26 Jul 1992 10:47:36 GMT

saj@chinet.chi.il.us (Stephen Jacobs) writes:
: I don't think the previous message was emphatic enough about the explosive 
: hazard of ammonium nitrate.  It's a high explosive (it doesn't go bang, so
: much as shatter everything around it), and even water solutions can be
: detonated.  The pure material is admittedly VERY hard to cause to explode, but
: a few percent of a fuel mixed with it can make it much touchier.  I wouldn't
: mess with it.

ANFO is not that sensitive. It requires either high heat and pressure or a
very strong shock to get it to detonate. The high heat and pressure were
what caused the various fertilizer ship explosions.

ANFO, when used in a bore hole for blasting, typically requires a booster
of TNT for reliable detonation.

Bill
From: mstoer@sol.UVic.CA (Marcell Stoer)
Newsgroups: sci.chem
Subject: Re: moderator how is one appointed?
Date: 22 Jul 92 17:57:59 GMT
Organization: University of Victoria, Victoria, B.C. CANADA

In article <1992Jul22.160345.29970@kth.se> tomas_e@LINK.Physchem.KTH.SE writes:
>In article <EeP5Sy600WBMQ1v3oN@andrew.cmu.edu>, Paul Karol <pk03+@andrew.cmu.edu> writes:
>>
>>   I cast my vote AGAINST moderation.  (No pun intended.)
>>
>So do I.

We might as well all vote this way.  I also do not want this group 
moderated.  This is suppose to be an open discussion group.  There is 
enough 'censoring' around already.

-- 
Marcell Stoer                                Internet : mstoer@sol.uvic.ca
Department of Chemistry
Molecular Beam Laser Spectrometry Laboratory    Voice : (604) 721-8975
University of Victoria                            FAX : (604) 721-7147
Newsgroups: sci.chem
From: joec@fid.morgan.com (Joe Collins)
Subject: Re: Precipitating Aluminum out of Solution
Keywords: Precipitating Aluminum Metal
Organization: None
Date: Wed, 29 Jul 1992 14:11:11 GMT

In article <1992Jul22.172939.18139@ccu.umanitoba.ca> cweiss@ccu.umanitoba.ca (christopher gene weiss) writes:
>I've been looking for ways to precipitate reasonably fine aluminum metal
>out of a simple solution. I've considered dissolving aluminum metal in strong
>acid and then trying some sort of redox to precipitate it but I can't think
>of a decent reaction. Can anybody help me on this? Thanks.

Since Aluminum is quite reactive, it will be hard to precipitate it
out of a simple solution. In particular, Aluminum will not precipitate
out of a water-based solution since Aluminum metal is more reactive
than hydrogen.

I would guess you need to do something like heating up an Aluminum
compound (Al2O3 or AlCl3, etc) until molten and then introducing a
more reactive metal (sodium, magnesium, potassium, etc), all in an
inert atmosphere of some sort. This should precipitate out Aluminum.

Hope this helps....

Joe
joec@morgan.com
From: gezelter@sam.cchem.berkeley.edu (Dan Gezelter)
Newsgroups: sci.chem
Subject: Re: will this cause a fire?
Date: 24 Jul 1992 14:09:15 GMT
Organization: University of California, Berkeley
NNTP-Posting-Host: sam.cchem.berkeley.edu

In article <1992Jul24.120536.27525@athena.cs.uga.edu> giber@pollux.cs.uga.edu (Carolyn Giberson) writes:

>This may delve into the area of forensic chemistry, but here goes.  
>A police department in north Georgia is investigating a suspicious
>fire.  They suspect that the fire (trying to burn a mobile home)
>may have been started by mixing powdered calcium hypochlorite and
>a wood preservative (described only as "volatile", so I assume it
>is based on a flammable solvent -- hydrocarbon? acetone?).  My
>questions are:

The most widely feared reaction among ex-pool managers is the 
inadvertent mixture of Calcium hypochlorite (commonly known as
HTH) and pine oil.  Every few years, one reads stories of chemically
naive lifeguards who tried to clean the bath house, figuring that if
HTH works well, and if Pine oil works well, a mixture must work even
better.  They usually end up burning down the bath house.

>1.  Would these substances be expected to react spontaneously to
>    cause a fire, an explosion, both, or neither?

My experience has been with mixtures of Calcium hypochlorite and pine
oil, not acetone or another solvent, so your mileage may vary, but
the fire caused is spontaneous, but not particularly explosive.

>2.  Would another agent (even as simple as water?) be needed to
>    cause this to happen?

Don't know the answer to this.  There was always water present
the times that I observed the reaction, but I don't know if it
is necessary.

>3.  Under what conditions would this be likely to occur (i.e., in
>    a sealed container, simple mixing, etc.)?

Simple mixing.

>4.  What time interval might be involved between mixing the chemicals
>    and the eventual reaction (i.e., time to set up an alibi?)?
>

With concentrated pine-oil, only a few seconds.

>Thanks!

Your welcome.
   --Dan

-- 
_______________________________________________________________________
Ceci n'est pas un .sig              gezelter@lithium.cchem.berkeley.edu
-----------------------------------------------------------------------
Newsgroups: sci.chem
From: asuccop@milton.u.washington.edu (Annemarie Succop)
Subject: synthesizing x
Organization: University of Washington
Date: Mon, 27 Jul 1992 00:25:04 GMT


	has anyone here attempted to synthesize x from the notes
	in alex & ann shulgin's _pihkal_?  pls send me email
	re feasibility, etc.

	annemarie
	asuccop@u.washington.edu
From: zli@IRIS116.BIOSYM.COM (Zhenqin Li)
Newsgroups: sci.chem
Subject: 34th IUPAC Congress, Beijing, August 15-20, 1993
Date: 24 Jul 92 20:43:26 GMT

34th IUPAC Congress
Chemistry for the 21st Century -- The Central Science
Beijing, August 15-20, 1993

(Organized by the Chinese Chemical Society)

The organizers cordially invite you to attend the 34th
Congress of International Union of Pure and Applied Chemistry. 
The scientific programme will be mainly devoted to eight sections 
of chemistry:
 
1. Life science and organic chemistry
2. Chemistry for a better enviroment and analytical chemistry
3. Advanced materials and inorganic chemistry
4. New polymer materials and macromolecular science
5. Petrochemistry, fossil fuels chemistry and catalysis
6. Physical chemistry
7. Chemical information and computer in chemistry
8. Popularization and education of modern chemistry


           REQUEST FOR SECOND CIRCULAR
____________________________________________________________

(Please use block capitals)
Please send me the further information on the Meeting

   NAME:_______________________________________________

   ADDRESS:_____________________________________________
        _______________________________________________
        _______________________________________________
        _______________________________________________
        _______________________________________________

   Tel.No.:____________________________________________
   Fax:   _____________________________________________
   Email:______________________________________________

   I will be attending the Congress:   Yes / No

   I intend to present a paper:  Yes / No  on the topic:

   ____________________________________________________

   ____________________________________________________

   I will be accompanied by ____ person(s).

Please send the request to Prof. Xinqi Song, Secretary-General 
of 34th IUPAC, c/o Chinese Chemical Society, P. O. Box 2709, 
Beijing 100080, PR China.  Tel.: 86-1-2568157 or 2564020 
Fax: 86-1-2568157.

Newsgroups: sci.chem
From: bx017@cleveland.Freenet.Edu (Michel Aubin)
Subject: STN...CAS
Organization: Case Western Reserve University, Cleveland, Ohio, (USA)
Date: Wed, 29 Jul 92 05:28:22 GMT


Hello, 
 
  I want have a information on a STN System (CAS)
 
how doing for a register and the cost for a Register..????
Please send me a message  ... my address  appear   at bottom this text
 
Bye, 
 
 
						Michel Aubin
-- 
Address Internet-=>Bx017@po.cwru.edu
Address Internet-=>Maubin@heartland.bradley.edu
Address Fidonet.-=>1:240:507  (My Name is Michel Aubin)  (On Bab-O-Manie)
From: fiori@cats.ucsc.edu ( Wayne R Fiori )
Newsgroups: sci.chem
Subject: Re: moderator how is one appointed?
Summary: Just say no
Date: 24 Jul 92 04:33:40 GMT
Organization: University of California; Santa Cruz
NNTP-Posting-Host: am.ucsc.edu


In article <EeP5Sy600WBMQ1v3oN@andrew.cmu.edu>, Paul Karol <pk03+@andrew.cmu.edu> writes:
>
>   I cast my vote AGAINST moderation.  (No pun intended.)
>

As do I.

Learn how to use a KILL file instead.

--

==============================================================================
|\//\\//\\//| Wayne R Fiori           |  e-mail:  fiori@chemistry.ucsc.edu   |
|//\\//\\//\| Thimann Laboratories    |   Phone:  (408)459-3390 [office]     |
|/\\//\\//\\| Chemistry Board, UCSC   |           (408)459-2935 [fax]        |
|\\//\\//\\/| Santa Cruz, CA 95064    |           (408)459-4002 [message]    |
==============================================================================

-- 
......
Xref: sparky sci.chem:2818 sci.geo.meteorology:2600
From: jstravis@bass.bu.edu (John Travis)
Newsgroups: sci.chem,sci.geo.meteorology
Subject: environemtal scientists -- Careers??
Date: 28 Jul 92 16:25:57 GMT
Article-I.D.: bu.92100
Reply-To: jstravis@bass.bu.edu (John Travis)
Followup-To: sci.chem
Organization: Boston University

Since this worked well for me, my colleague will try a posting....

attenion environmental scientists

My name is Richard Stone and I'm a staffwriter at Science Magazine. The 
reason I'm hailing you is to ask for help with an article on careers in
environmental careers. But I'm hung on a few minor details:

--how do you define "environmental science"
--in what durection is the field moving
--where are the jobs? inn industry? governement? academia?
--are there subdisciplines in envir. science that are vastly
undersatffed or overstaffed.

I'm interested in hearing your answers to these and any others questions
I've neglected to ask. please call me ASAP at 202-326-6593 or fax me reply
at 202-371-9227. You can also email a friend of mine at
 jstravis@bu-pub.bu.edu

Thanks for the help and feel free to circulate this among your colleagues
Newsgroups: sci.chem
From: rfs0838@summa.tamu.edu (SCHAFFTER, RODNEY FRANK, JR)
Subject: Re: moderator how is one appointed?
News-Software: VAX/VMS VNEWS 1.41    
Organization: Texas A&M University, Academic Computing Services
Date: Tue, 21 Jul 1992 20:35:00 GMT


	I don't think that the level of traffic on this group justifies
a moderator.  I can usually weed out the flame wars and worthless stuff
by doing a directory and noting the subject headings. If this group got
70-200 posts a day like a certain comp. group I subscribe to, I would
probably feel differently.

Rod Schaffter                                 	
Laboratory for Molecular Structure and Bonding	|Who cares if windows is or 
Texas A&M University Dept. of Chemistry		|isn't an opperating system-
Bitnet:   SCHAFFTER@TAMLMSB			|it barely operates at all!
INTERNET: SCHAFFTER@LMSBVX.TAMU.EDU		|
	"Standard Disclaimer, etc."		|An OOPerating system, maybe?
Newsgroups: sci.chem
From: James Petts <pettsj@visigoth.demon.co.uk>
Subject: re: Protein Data Bank Files ?
Organization: No affiliation
Date: Thu, 30 Jul 1992 07:00:29 GMT
X-Useragent: Nuntius v1.1

You can ftp Raster3D (very good indeed IMHO) from
stanzi.bchem.washington.edu
(128.95.12.38)

James Petts
Newsgroups: sci.chem
From: knapp@spot.Colorado.EDU (David Knapp)
Subject: Re: Precipitating Aluminum out of Solution
Keywords: Precipitating Aluminum Metal
Organization: University of Colorado, Boulder
Date: Wed, 29 Jul 1992 23:34:26 GMT

In article <1992Jul29.141111.4582@fid.morgan.com> joec@fid.morgan.com (Joe Collins) writes:
>In article <1992Jul22.172939.18139@ccu.umanitoba.ca> cweiss@ccu.umanitoba.ca (christopher gene weiss) writes:
>>I've been looking for ways to precipitate reasonably fine aluminum metal
>>out of a simple solution. I've considered dissolving aluminum metal in strong
>>acid and then trying some sort of redox to precipitate it but I can't think
>>of a decent reaction. Can anybody help me on this? Thanks.
>
>Since Aluminum is quite reactive, it will be hard to precipitate it
>out of a simple solution. In particular, Aluminum will not precipitate
>out of a water-based solution since Aluminum metal is more reactive
>than hydrogen.
>
>I would guess you need to do something like heating up an Aluminum
>compound (Al2O3 or AlCl3, etc) until molten and then introducing a
>more reactive metal (sodium, magnesium, potassium, etc), all in an
>inert atmosphere of some sort. This should precipitate out Aluminum.


Aluminum *can* be precipitated out of an aqueous soln in the form of a 'lake'.
You can see it (Al(OH)3) by adding an organic dye like aluminon. This can
be centrifuged and dried, but would  probably need to be heated in a hydrogen
furnace to get back to metallic Al.

See Brumblay's 'Qualitative Analysis' book for the precipitation procedure.


-- 
David Knapp                                      University of Colorado, Boulder
Highly Opinionated, Aging  and                      knapp@spot.colorado.edu
Perpetual Student of Chemistry and Physics.
            Write me for an argument on your favorite subject.
Newsgroups: sci.chem,rec.food.veg
From: merolajs@vtcc1.cc.vt.edu (JOSEPH S. MEROLA DEPT OF CHEMISTRY VPI&SU)
Newsgroups: sci.chem
Subject: Re: moderator how is one appointed?
Date: 22 Jul 92 14:00:00 GMT
Organization: Virginia Tech, Blacksburg, Virginia
News-Software: VAX/VMS VNEWS 1.40

In article <cs_jh.491@cox.nsac.ns.ca>, cs_jh@cox.nsac.ns.ca (JEFF HOYLE) writes...
>I think that it is about time that this group had a moderator.  How does one 

I haven't seen anything is this group that would suggest the need for
a moderator.  In addition, a moderator would really slow things down.  
I vote against a moderator.

Joseph S. Merola
Dept. of Chemistry
Virginia Tech (aka VPI&SU)
From: jgd@dixie.com (John De Armond)
Newsgroups: sci.chem
Subject: Re: will this cause a fire?
Date: 27 Jul 92 05:09:43 GMT
Organization: Dixie Communications Public Access.  The Mouth of the South.

giber@pollux.cs.uga.edu (Carolyn Giberson) writes:


>may have been started by mixing powdered calcium hypochlorite and
>a wood preservative (described only as "volatile", so I assume it
>is based on a flammable solvent -- hydrocarbon? acetone?).  My
>questions are:

>1.  Would these substances be expected to react spontaneously to
>    cause a fire, an explosion, both, or neither?

Yes.  Absolutely.  A very fun experiment in pyro, in fact.

>2.  Would another agent (even as simple as water?) be needed to
>    cause this to happen?

No.

>3.  Under what conditions would this be likely to occur (i.e., in
>    a sealed container, simple mixing, etc.)?

Mix 'er up and stand back.

>4.  What time interval might be involved between mixing the chemicals
>    and the eventual reaction (i.e., time to set up an alibi?)?

Depends on the chemicals used.  My experience has been that oil-type
hydrocarbons and ordinary HTH (~35%) is spotty.  Sometimes it will
ignite and other times it will merely emit copious quantities of
smoke and fumes.  Oils and "shock" (Olin's trademark is Sockit) chlorine,
about 75-85%, ignites reliably.  The best mix I've found to date is
Sockit and brake fluid, mixed to a thick slurry.  This mix erupts in a bright 
red flame in 5 to 30 seconds depending on the geometry of the container.  
It will explode in a closed container.   The mix almost always turns
fairly deep orange right before ignition.


>Any information/suggestions/opionions on this would be greatly
>appreciated.  Please post your response to this news group or
>email me directly -- giber@pollux.cs.uga.edu.

This mix would work very well for the suspected purpose.   If it failed,
you have a good clue that the perp knows practically nothing about 
the subject :-)

John
-- 
John De Armond, WD4OQC        |Interested in high performance mobility?  
Rapid Deployment System, Inc. |Interested in high technology and computers?  
Marietta, Ga                  |Write me about "Performance Engineering" (TM) 
jgd@dixie.com                 |Magazine. 
Need Usenet public Access in Atlanta?  Write Me for info on Dixie.com.
From: che358w@vaxc.cc.monash.edu.au
Newsgroups: sci.chem
Subject: MS Windows Vibrations Program Available.
Date: 24 Jul 92 13:52:15 +1000
Organization: Computer Centre, Monash University, Australia

Hi,
  If anyone is interested I have written a MS windows program that displays
and animates normal modes of vibrations. It can extract the data it needs
from a Gaussian 90 log file or read it in from a text file. The vibrations can
be displayed as arrows from the centres of the atoms and these pictures can
be printed, saved as bitmap or copied to the clipboard. I hope people will
find it interesting and useful. Its shareware and available on archive.umich.edu
under msdos/mswindows/educational or on wuarchive.wustl.edu under
mirrors3/archive.umich.edu/msdos/mswindows/edicational. Its called winvibes.zip.

Samantha Lane
CHE358W@vaxc.cc.monash.edu.au
Newsgroups: sci.chem
From: bz584@cleveland.Freenet.Edu (John Goelz)
Subject: Re: Wetting agents
Organization: Case Western Reserve University, Cleveland, Ohio, (USA)
Date: Thu, 23 Jul 92 01:28:21 GMT


Seems like a very small concentration of a nonionic surfactant such as one of the Igepal series (used to be GAF company) or Pluronic series (BASF) or Neodols
(Shell) could be used.  I'm not sure whether a oil soluble or water soluble one
would be preferable (in the venacular of surfactants this is refered to a HLB-
hydophobic/lipophbic balancd).  Call either of these companies, they would be 
glad to send small samples for testing.

John Goelz
From: manuel@bass.bu.edu (Manuel Toledo-Quinones)
Newsgroups: sci.chem,sci.engr.chem
Subject: Question: Evaporation rate in a bubler.
Date: 31 Jul 92 17:06:49 GMT
Reply-To: manuel@bass.bu.edu (Manuel Toledo-Quinones)
Followup-To: sci.chem
Distribution: U.S.A.
Organization: Boston University

Hi! I have a question on how to estimate the evaporation rate (or the resulting
flux) in a bubler.

We are using a bubler as a source of TEOS, a silicon compound that is liquid
at room temperature. The bubler is heated to about 180F and a flux of Ar is
send through the liquid. This causes the TEOS to evaporate, and produces a
flux of Ar/TEOS that is then used to grow a coating in a reactor. We would 
to estimate the resulting flux of TEOS that is introduced in the reactor.

I would greatly appreciate any advice or references I can consult. 

Thanks to all in advance....manuel 

Newsgroups: sci.chem
From: ole@delab.sintef.no (Ole-Hjalmar Kristensen)
Subject: Re: Trans/non-transparent
Organization: SINTEF DELAB, Trondheim, Norway.
Date: 31 Jul 92 11:28:25

Try reading up on the subject of Kerr cells, which are essentially
shutters consisting of a cell filled with liquid and controlled by
voltage. I don't remember exactly what kind of liquid is used, but if
I remember correctly, there are a number of substances which will do
the trick. ( I think someone even claimed that coffee would do :-)
From: roland@equinox.unr.edu (Roland H. Schweitzer)
Newsgroups: sci.chem
Subject: Request for coordinates and connectivity of C60 in electronic form.
Date: 27 Jul 92 21:29:27 GMT
Organization: University of Nevada, Reno

My thanks and apologies for asking what must be a frequent question.

I would like to test and demonstrate the Silicon Graphics Iris Explorer
software as applied to viewing molecular structures.  I would like
the coordinates and connectivity for C60 and any related molecules
that anyone might have in electronic format.

Mail or pointers to anonymous ftp sites would be appreciated.

Thanks again,
Roland


roland@nevada.edu

	Roland H. Schweitzer		Computer Center Building/MS 270
	UCCSN Computing Services	Reno, NV 89557-0023

	(702) 784-4290 (office)		(702) 784-1108 (FAX)
Newsgroups: sci.chem
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: Hydrazine
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Sun, 26 Jul 1992 10:54:07 GMT

a481@mindlink.bc.ca (J.D. Frazer) writes:
: Could some compassionate individual be so kind as to post the formula for
: hydrazine?
: 
: Gracias.

Certainly, but it is a rather nasty substance to work with.

NH2NH2.H2O is the hydrate. It also exists in the anhydrous form.

It is very corrosive. The liquid burns the skin and eyes. It is a
violent poison and has been identified as a carcinogen in animals.
Ref: Merck 4669, Be 350, IARC Sci Publ. No. 43.

Bill
From: tomh.bbs@cybernet.cse.fau.edu
Newsgroups: sci.chem
Subject: thin films on curved surfaces
Date: 23 Jul 92 16:49:40 GMT
Organization: Florida Atlantic University, Boca Raton

Are all thin films grown on flat surfaces?  It seems to me that
many crystal structures would rather grow on curved surfaces,
and that the use of such surfaces could produce very high quality
thin films (like for solar cells and such).
Forcing a film to grow on a flat surface can introduce defects
if the natural geometry of the film is curved, like flattening
a sphere onto a plane doesn't work.