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- From: whit@milton.u.washington.edu (John Whitmore)
- Newsgroups: sci.materials
- Subject: Re: Insulator with good heat conductivity
- Message-ID: <1992Jul30.003724.12642@u.washington.edu>
- Date: 30 Jul 92 00:37:24 GMT
- References: <7926@dirac.physics.purdue.edu> <17760004@hpnmdla.sr.hp.com>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Seattle
- Lines: 19
-
- In article <17760004@hpnmdla.sr.hp.com> stanb@hpnmdla.sr.hp.com (Stan Bischof) writes:
- >In sci.materials, whit@milton.u.washington.edu (John Whitmore) writes:
-
- >>best bet is BeO (highly toxic, by the way!)
-
- >Nonsense. This is pure urban legend. You could eat BeO on your breakfast
- >cereal and have no problems.
-
- >The only problems with BeO come in when you powder it very finely and
- >inhale it into your lungs. The small particles cause some nasty reactions
- >similar to what happens with inhaled asbestos. Basically a mechanical
- >irritation.
-
- Are you certain of that? My trusty TLV-TWA table shows acceptable
- dust levels of arsenic at 0.5 mg/m^3, and of beryllium at 0.002 mg/m^3;
- beryllium is a very toxic light-metal poison, and I always thought
- the oxide was just as toxic.
-
- John Whitmore
-