HDTenEightyP/NetNews huggingface dataset:
From: moroney@ramblr.enet.dec.com
Subject: Re: H2SO4 + Chlorox???
Organization: Digital Equipment Corporation
Date: Wed, 7 Oct 1992 03:18:21 GMT

In article <1195@zogwarg.etl.army.mil>, hoey@zogwarg.etl.army.mil (Dan Hoey) writes...
>khartman@fnalc.fnal.gov writes:
> 
>>Dan,
> 
>Dan who?  Are you responding to Dan Clute's posting or to to my
>posting?  If either, why did you change the subject to H2SO4?  We
>weren't discussing that, we were talking about clorox and ammonia
>(ammonium hydroxide, NH4OH).

No there are two independant questions.  Look at some earlier postings.  One
person asked about some place being evacuated because someone mixed sulfuric
acid and chlorox, someone else asked about ammonia and chlorox.

Maybe the questions aren't totally independant, the discussion of sulfuric
acid/chlorox may have prompted the ammonia/chlorox question.

-Mike
Xref: sparky sci.chem:3831 sci.materials:753
From: kwg@creare.com (Kent G.)
Newsgroups: sci.chem,sci.materials
Subject: Tungsten reclaimation
Date: 5 Oct 92 13:46:56 GMT
Reply-To: kwg@spock.creare.com.creare.com (Kent G.)
Distribution: w
Organization: Creare Inc., Hanover, NH

This is a follow-up to a previous post of mine requesting information on processing an electrolyte waste that has tungsten dissolved in it.  Thanks to all thosewho responded, your suggestions have been most enlightening.

I would now like to identify companies that specialize in reclaimation/recyling of valuable metals.  In particular, the names of any tungsten refiners would be appreciated.  My hope is that I can sell/give my waste product to these people  so they can recover the dissolved tungsten. 

Thanks in advance,

Kent Goeking
Creare Inc.
kwg@creare.com 
Newsgroups: sci.chem
From: FLANAGA@RICEVM1.RICE.EDU (Scott Flanagan)
Subject: adiabatic e- transfer: definition?
Organization: Rice University  
Date: Sat, 26 Sep 1992 23:56:13 GMT

Does anyone know the definition of adiabatic electron transfer?  I know
it is not the same as the thermodynamic definition of adiabicity.  If
anyone could supply me with an explanation and/or a good introductory
reference, I would be much obliged.
 
       Scott Flanagan (flanaga@ricevm1.rice.edu)
From: whitbeck@equinox.unr.edu (Michael Whitbeck)
Newsgroups: sci.chem
Subject: infrared fiber optics?
Summary: IR waveguide
Date: 30 Sep 92 17:13:25 GMT
Organization: University of Nevada, Reno

I would appreciate any information on the availability
and performance of infrared fiber optics or waveguides 
(not necessarily fiber).

The spectral ranges of interest are near-IR (700-2500 nm)
and mid-IR (2.5 - 7 microns). 

If you have been working in this area or with IR waveguides I
would appreciate receiving e-mail.


I want to measure diffuse reflectance from a (very) rough
surface that is in motion- I can control the movement in the 
direction of travel. The distance from the surface to the
instrument will vary and I believe it would be easier to
manipulate a waveguide than to swing the instrument
back-and-forth to maintain the viewing geometry.

Many thanks in advance!


___________________________________________________________
|Mike Whitbeck             | whitbeck@equinox.unr.edu     |
|Desert Research Inst.     | whitbeck@wrc.unr.edu         |
|POB 60220                 |                              |
|RENO, NV 89506            | 702-673-7348                 |
|__________________________|______________________________|

All academics have the potential for being insatiable...
but the chemists are the most expensive and insatiable among the
expensive and insatiable. - J. Martin in "To Rise Above Principle"
From: whitbeck@snowlake.wrc.unr.edu
Newsgroups: sci.chem
Subject: FFF
Keywords: field flow fractionation
Date: 30 Sep 92 21:46:31 GMT
Reply-To: whitbeck@snowlake.wrc.unr.edu ()
Distribution: na
Organization: Desert Research Institute, University of Nevada

There is a company in Salt Lake City, UT that makes FFF (field flow
fractionation) equipment. I have misplaced their literature- would
any of you happen to know of this (Salt Lake) company or other vendors
of FFF equipment? I drew a blank with my AC LabGuide (1990- someone 
appropriated the more recent ones). An e-mail response would be 
appreciated. Thanks.


Mike.
___________________________________________________________
|Mike Whitbeck             | whitbeck@equinox.unr.edu     |
|Desert Research Inst.     | whitbeck@wrc.unr.edu         |
|POB 60220                 |                              |
|RENO, NV 89506            | 702-673-7348                 |
|__________________________|______________________________|

All academics have the potential for being insatiable...
but the chemists are the most expensive and insatiable among the
expensive and insatiable. - J. Martin in "To Rise Above Principle"
From: krm@sdc.boeing.com (Keith Michaels)
Newsgroups: sci.chem
Subject: Re: Re:Questiona about Ammonia
Date: 2 Oct 92 17:38:09 GMT
Followup-To: sci.chem
Organization: Boeing Computer Services (ESP), Seattle, WA

In article <2082@grivel.une.edu.au>, mgray1@metz.une.edu.au (Matthew GRAY) writes:
 ...
|> For birds this is even more crucial; if they had to carry enough water 
|> to dissolve urea or ammonia instead of uric acid, they wouldn't be able 
|> to fly. Production of uric acid actually costs energy, but the gains
|> in reduced water loss must far outweigh this. 
 ...

This reminds me of P. W. Atkins description of the African Turacos,
which concentrates the uroporphyrin from urine (the molecule that gives 
it its yellow color) and wears it on its head, making the crest a bright 
red.  I don't know if this has anything to do with maintaining body water
balance; what comes out the other end is probably not too different
from any other bird.

-- 
/*-------------------------------------------------------------------*
 * Keith R. Michaels       | The Boeing Company                      *
 * krm@sdc.boeing.com      | Seattle, WA.                            *
 * Disclaimer: "Warning: may contain traces of Paraquat"             *
 *-------------------------------------------------------------------*/
From: tt@wag.caltech.edu (Toshi Takeuchi)
Newsgroups: sci.chem
Subject: adiabatic electron transfer
Date: 29 Sep 1992 21:05:35 GMT
Organization: California Institute of Technology, Pasadena, CA
Distribution: world
NNTP-Posting-Host: sgi1.wag.caltech.edu

Another way to look at adiabatic electron transfer is in terms of
coupling between the reactants and the products.

Simply put, if the electronic coupling between the reactants and products
is large, it is an adiabatic reaction.  If the transition state is
reached, then the electron will transfer almost 100% of the time.

If the coupling is weak, then it is non-adiabatic, as in long distance
electron transfer in proteins.  This means that the electron may not
transfer an electron even if the transition geometry is reached.

I can give several references to Marcus theory of electron transfer
if anyone is interested...

Toshi
tt@wag.caltech.edu

Newsgroups: sci.chem
From: poutsmaj@mace.cc.purdue.edu (unknown)
Subject: Re: Smoke bomb
Organization: Purdue University
Date: Wed, 30 Sep 1992 00:20:27 GMT

In article <1992Sep29.164843.28788@alf.uib.no> ttt@cmr.no (Tore Tjomsland) writes:
>I want to make a small smoke bomb for outdoor
>use. Could anyone help me, please ?
>
>Tore Tjomsland
>ttt@cmr.no

Yeah and I want to build a nuclear reactor in my kitchen.  Can you help me, 
too? :)

paul

Newsgroups: sci.chem
From: justjoe@world.std.com (Donald J Anderson)
Subject: sci.chem.organomet
Summary: I favor creating sci.chem.organomet
Keywords: scienc, chemistry, inorganic, organic, transition, organometallics
Organization: The World Public Access UNIX, Brookline, MA
Date: Sun, 27 Sep 1992 04:44:32 GMT


Creating sci.chem.organomet would be a good move, in my opinion.

Joe Anderson
justjoe@world.std.com
justjoe@well.sf.ca.us
anderson@chem.chem.rochester.edu




Newsgroups: sci.chem
From: taob@generic.uucp (Brian Tao)
Subject: Re: Teflon on pans
Organization: Terra*Net Public Access Unix BBS.  (416) 731-{3468,9867}, 237-0308
Date: Tue, 29 Sep 1992 00:54:33 GMT


    Speaking of Teflon-coated cookware, why do the instructions on care and
usage of Teflon sets advise you to rub cooking oil on the surface before
cooking with it the first time?  Is it to protect the food from absorbing
particles of PTFE on the surface?  I assume ingesting anything with high
concentrations of fluorine is detrimental to one's health.  ;-)  BTW, how
do you stick Teflon to the inside of a pan if it isn't supposed to stick
to anything?  :)
-- 
Brian T. Tao    =*8-) | ::::::::> tcomtaob@chasm.scar.utoronto.ca <::::::::
Dept. of Exobiology   | :::::> generic!terranet!taob@zoo.toronto.edu <:::::
University of Toronto | "Though this be madness, yet there is method in't."
Newsgroups: sci.chem
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: Why not mix bleach and ammonia?
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Mon, 5 Oct 1992 21:33:51 GMT

hoey@zogwarg.etl.army.mil (Dan Hoey) writes:
: djclute@cwis.unomaha.edu (Daniel Jonathan Clute) writes:
: 
: >	I've always been told that a person should NOT mix ammonia and bleach
: >together; I suppose because chlorine gas is formed.
: 
: No, I read you get chloramine, which forms dichloramine (explosive),
: nitrogen trichloride (explosive), and hydrazine (extremely poisonous).
: If you just want to snort some chlorine, this is overkill.
: 
: Your vital signs may vary.  Don't try this at home.  It is a violation
: of federal law to use these products in a manner inconsistent with
: their labelling.

It is? Does that mean that - if I use Laundry Bleach to bleach some paper,
I am breaking some sort of Federal statute? 

It may be foolish, but I doubt if it is illegal - unless it produces some
banned substance.

Bill
From: kr@cup.portal.com (Markus XXX Krummenacker)
Newsgroups: sci.chem
Subject: Re: 3D modelling software
Date: Sun, 27 Sep 92 05:23:03 PDT
Organization: The Portal System (TM)

Almost instantly, I received the following answer which probably makes
a lot of sense. Thank you very much.
-----------------------

Message-Id: <9209260750.AA13659@nova.unix.portal.com>
To: kr@cup.portal.com
Subject: Re: 3D modelling software
Newsgroups: sci.chem
Organization: Harvey Mudd College, Claremont, CA 91711
Date: Sat, 26 Sep 92 0:47:37 PDT
From: ebrandt@jarthur.Claremont.EDU

In article <66633@cup.portal.com> you write:
>Q.4 (9/26/92) Slower Rotation of Selection vs. Everything
>Also, an intriguing phenomenon I have noticed is that in HyperChem the
rotation
>of the complete workspace is much smoother and more jerk-free than the
rotation
>of only a few (or one) selected molecule(s) while leaving the other molecule

This is probably an artifact of the fact that you're using
high-performance graphics hardware, namely SGI's.  The SGI viewing
model, and presumably others, provides a way to change the global
viewing transformation -- e.g. rotate everything.  This is very fast,
because it all happens in hardware.  To rotate only one thing
requires that the software alter a portion of the display list that
it's feeding into the graphics engine.  The oddity is really not that
rotating a selection is jerkier but that rotating the workspace is
smoother, a consequence of the special-case speedup allowed by
the graphics hardware.

   Eli   ebrandt@jarthur.claremont.edu
From: b5249-23@mathcs.sjsu.edu (Kurt Stocklmeir)
Newsgroups: sci.chem
Subject: cancer
Date: 30 Sep 92 22:43:17 GMT
Organization: San Jose State University - Math/CS Dept.


    A photoactive dye called haematoporphyrin is used in photoradiation.
Photoradiation is a method used to kill cancer cells.  This dye is absorbed by
almost all cells.  But cancer cells keep this dye in them for a much
longer time as compared to normal cells.  After this dye has left
the normal cells, and while it is still in cancer cells, red light
is used to put it into an excited state.  The dye goes into an
excited state, and transfers energy to oxygen molecules.  The oxygen
molecules then go into an excited state and kill the cell they are
in.  The problem with this method is that red light will go through
only about 1/3 in. of a person.
    Red light has an energy of about 1.8 ev.  Because a molecule is
photoactive, does not mean there are not other methods to put it in an excited
state.  For example, collisions with other particles can cause a molecule to
go into an excited state.  This method and others could maybe excite
haematoporphyrin in all parts of a body.
    Since people are mostly made of water, many molecules are in a
form of ions.  Positive ions and protons tend to be around the cell wall on
the inside of cells.  Most of the positive ions are K+.  Negative ions are
on the outside of the cell wall.  Theories state that cancer cells
may have a larger negative charge on the outside of cell walls as
compared to normal cells and because of this there is an imbalance
between forces of negative charges and forces associated with
molecules.  This maybe is why cancer cells can move to different
parts of a body.
    Charged particles can be accelerated using electric fields.  I
am not saying the following can be done, but I am saying it maybe
can be done.  Alternating electric fields can accelerate charged
particles in cells and outside of cells.  As the charged particles
are accelerated, they will have various amounts of kinetic energy.
Some of the particles could maybe have about 1.8 ev of kinetic energy while
most will not.  If that is true, then those particles with 1.8 ev
can collide with molecules of haematoporphyrin and excite them.
If a reasonable amount of this dye is excite in a cell, the cell
will then be killed.  Even if this happened only a small amount
of the time, this method could be used to kill cancer cells.
In my opinion, it would be better if the above only happened a
small amount of the time, since killing all cancer cells in a person
at 1 time could kill the person.
    If anybody has any suggestions about this method or would
like to experimentally try this method and would like my suggestions,
please send mail.
Newsgroups: sci.chem
From: polowin@chem.queensu.ca (Joel Polowin)
Subject: Re: Testing for lead
Organization: Dept. of Chemistry, Queen's University
Date: Tue, 6 Oct 1992 21:55:52 GMT

In article <1992Oct6.142556.9030@iccgcc.decnet.ab.com> sabat@iccgcc.decnet.ab.com writes:
>Is there a simple inexpensive way I could test for lead in some paint chips
>from my house myself or do I need to take a sample to some paint testing
>laboratory?  Thanks for your help.

A quick-'n'-dirty test would probably be to soak your chips in a concentrated
solution of iodide, say potassium iodide.  Watch for a characteristic
bright yellow colour of lead iodide in the chip as iodide migrates from
solution and forms insoluble PbI2 within the paint.  

This test is by no means certain;
there are many things that could interfere, including the chemical state
of the lead, and there are some things that COULD give a false positive
result.
Newsgroups: sci.chem
From: erodrigu@dcc.uchile.cl (Eduardo Rodriguez)
Subject: looking for information, help please!!
Originator: erodrigu@tortel
Date: Fri, 02 Oct 1992 20:30:19 GMT
Organization: Universidad de Chile, Depto. de Ciencias de la Computacion


I'm forwarding an e-mail i received:

---

I`m looking for new methods to recuperate silver, contained in acid
solutions produced during copper leaching.
  If you are familiar with any method or know where to search, would
you please inform me?

Gloria Maldonado
Metalurgical and Mining Research Center, CIMM
Santiago - Chile.
---
Thank you very very much.

edo...

Eduardo Rodriguez S        - --- - --- - --- -    erodrigu@dcc.uchile.cl
Dpto de Ciencias de la Computacion  - --- -    ...!uunet!uchdcc!erodrigu
Universidad de Chile   --- - --- - ---   erodrigu%uchdcc@uchcecvm.BITNET
- --- - --- - --- - --- - --- - --- - --- - --- - --- - --- - --- - ---
From: uchpcjv@Msu.oscs.montana.edu
Newsgroups: sci.chem
Subject: adiabatic e- transfer;  definition II
Date: 29 Sep 92 06:32:48 GMT
Reply-To: uchpcjv@Msu.oscs.montana.edu
Organization: Montana State University

After thinking about the earlier question, the plain old simple inorganic
textbook definition seems correct enough;

Adiabatic electron transfer is an electron transfer reaction which obeys
the classical Born-Oppenheimer approximation -- the nuclei are stationary
during the electron transfer process.

Jim Vivian
Bozeman
Newsgroups: sci.chem
From: harrisp@wl.aecl.ca
Subject: Help! Hardware Platforms for Gaussian 92
Organization: AECL RESEARCH
Date: Fri, 2 Oct 1992 18:00:30 GMT

We are planning to purchase Gaussian 92, and a suitable workstation to run
it on. The latter part is giving us some difficulty, and we aren't getting
very good support from the supplier. Specifically, we'd like to use a
relatively state of the art workstation, and the Gaussian people are not
very clear as to what architectures they've got the binary for. They'll say
it's available for a Sun, but when you mention SparcStation 2, they aren't
sure if it will run or whether a SparcStation 1 is required. Anyways,
platforms we are considering (for various internal reasons) are:
        DEC VS-4000-90
        Sun SparcStation 2
        Silicon Graphics Iris (not sure what model)
        IBM R6000 series
IF you are running Gaussian 92 on one of these platforms, could you drop
me a note to let me know your hardware, configuration, and any comments
you have on the performance. ANY HELP WILL BE GREATLY APPRECIATED.

                        Thanks in advance
                                Phil Harris
                                Research Chemistry Branch
                                Atomic Energy of Canada
Newsgroups: sci.chem
From: cfarmer@ncsa.uiuc.edu (Chuck Farmer)
Subject: Bleach and Teflon
Followup-To: sci.chem
Organization: NCSA
Date: Wed, 30 Sep 1992 14:41:46 GMT

Is there any need to worry about splashing or longer exposures of bleach on
teflon. I need to know because I use a bleach solution for sterilization
and my SO couldn't survive without teflon.

Gee I miss stainless steel and cast iron.

Thanks
Chuck
cfarmer@ncsa.uiuc.edu


Only a fool is sure - Moe Howard
Newsgroups: sci.chem
From: moroney@ramblr.enet.dec.com
Subject: Re: Why not mix bleach and ammonia?
Organization: Digital Equipment Corporation
Date: Tue, 6 Oct 1992 01:42:01 GMT

In article <1992Oct5.213351.18230@hpcvaac.cv.hp.com>, billn@hpcvaac.cv.hp.com (bill nelson) writes...
>hoey@zogwarg.etl.army.mil (Dan Hoey) writes:
>: djclute@cwis.unomaha.edu (Daniel Jonathan Clute) writes:

>: >	I've always been told that a person should NOT mix ammonia and bleach
>: >together; I suppose because chlorine gas is formed.

>: No, I read you get chloramine, which forms dichloramine (explosive),
>: nitrogen trichloride (explosive), and hydrazine (extremely poisonous).
>: If you just want to snort some chlorine, this is overkill.

You get a witch's brew of the above, with exactly what you get depending
on the pH (which depends on ratio of bleach and ammonia, and anything else
thrown in)

>: Your vital signs may vary.  Don't try this at home.  It is a violation
>: of federal law to use these products in a manner inconsistent with
>: their labelling.

>It is? Does that mean that - if I use Laundry Bleach to bleach some paper,
>I am breaking some sort of Federal statute? 

Read the label on various nasty chemicals intended for the home consumer.
It reads exactly as above.  I don't think bleach or ammonia has this
label yet, I do know insecticides and any other -cides have this (even
insecticidal soap for plants, all it is is a weak solution of potassium-based
soap!)

-Mike
From: azit@occuphealth.fi (Antti Zitting)
Newsgroups: sci.chem
Subject: Re: Teflon on pans
Date: 30 Sep 1992 10:39:26 +0200
Organization: Institute of Occupational Health, Finland
NNTP-Posting-Host: paja.occuphealth.fi
X-Newsreader: Tin 1.1 PL5

NIOSH (National Institute of Occupational Safety and Health, USA) has
published a good review on Teflon fumes:
'criteria for a recommended standard... Occupational Exposure to
Decomposition Products of Fluorocarbon Polymers, 1977'.
Have a look.

Antti Zitting
Institute of Occupational Health, Helsinki, Finland
azit@occuphealth.fi
From: Dirk_Hermanns@k.maus.de (Dirk Hermanns)
Newsgroups: sci.chem
Subject: Re: natural and synthetic elem
Date: Tue, 29 Sep 92 20:29:00 GMT
Organization: MausNet
X-Gateway: MausGate/News 1.13

Kommentar zu A18556@HB in der Gruppe SCI.CHEM

Hi  !

w>Both Tc and Pm occur naturally although Pm is quite
w>rare- see Cotton And Wilkinson.

But Tc is the smallest _unstable_ element. According to the "Mattauch'sche
Isobarenregel" (regel = rule, law) there is no stable Tc isotope, because there
are stable isotopes of other elements with the same mass as all possible Tc-
isotopes.
Ida Tacke and Walter Noddack thought to have discovered two new elements they
called Rhenium and Masurium, because they came from Rheinland (Rhenus Fluvius
is the latin name for the Rhein = Rhine, a river in Central Europe) and Masuren
(a former German region, now part of Poland and Russia). The discovery of
Rhenium was confirmed later, but Masurium should have been element 43 ...

Bye -- Dirk (Cologne/Rhine)
From: kbs@ccr-p6.ccr.jussieu.fr (An OCR-IP fan)
Newsgroups: sci.chem
Subject: Re: Adiabatic e- transfer definition
Date: 1 Oct 92 22:10:43 GMT
Organization: Universites P. & M. Curie / D. Diderot


A good explanation may be found in Kinetics of Electrode Processes by
Tibor Erdey-Gruz, published by ADAM HILGER LTD, London, in pp.248-249.
According to the author, adiabatic ET (electron transfer) is a process
in which the vibration of the configuration is slow as compared to the
ET rate, thus allowing the system to be considered as in a stable state.
Of course, the terms 'adiabatic' and its counter-part 'non-adiabatic'
are used inconsistently in the electrochemical literature.See also:
Cf.E. Sacher and K.L. Laidler: Modern Aspects of Electrochemistry
Vol 3, 6, London (1964).
-- 
=============================================================================
Laboratoire d'Electrochimie - Universite Paris 7  |Khac Binh Su
4, place Jussieu, Tour 44/45, 75005 PARIS. FRANCE |e-mail: kbs@ccr.jussieu.fr
=============================================================================
Newsgroups: sci.chem
From: djclute@cwis.unomaha.edu (Daniel Jonathan Clute)
Subject: Why not mix bleach and ammonia?
Organization: University of Nebraska at Omaha
Date: Mon, 5 Oct 1992 16:35:21 GMT

	I've always been told that a person should NOT mix ammonia and bleach
together; I suppose because chlorine gas is formed. Aside from performing
this dangerous experiment and analyzing the reactants and products, I'd
like to see a balanced equation for this reaction.

					Dangerously curious,
					  Dan Clute
					  UNO

Newsgroups: sci.chem
From: ksthorn@phoenix.Princeton.EDU (Kurt Stephen Thorn)
Subject: Re: Teflon on pans
Originator: news@nimaster
Organization: Princeton University
Date: Wed, 30 Sep 1992 17:49:45 GMT

In article <1992Sep29.005433.18155@generic.uucp> taob@generic.uucp (Brian Tao) writes:
>BTW, how do you stick Teflon to the inside of a pan if it isn't supposed
to stick to anything?  :)

I'd like to know this also - I've got an application where I'd very much like
to Teflon coat a metal cylinder (to insulate it).  It would be used for food
handling.  If anyone could give some leads on this, I'd be very appreciative.

Kurt Thorn
ksthorn@phoenix.princeton.edu


Newsgroups: sci.chem