Date: Tue, 16 Aug 2011 09:35:23 -0500
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Long, Don" <Don.Long**At_Symbol_Here**URS.COM>
Subject: Re: CAS #s for allotropes of phosphorus
I work at the Pine Bluff Arsenal in Arkansas, and
as far as I
know, this is the only place that still makes/uses any kind of
weapons (illum rounds, etc).
As I work with the Chemical Weapons destruction
part of the
Arsenal, not the production side of the house, I'm forwarding your email
Industrial Hygienist on that side. She worked with us for many years
moving over there and I have hopes that she might be able to help a
I'd go ahead and send her email address to you,
but I lost it
and I'm waiting for one of my folks to send it to me so I can forward
CAIH, CEAS I
Southwest Research Institute
Pine Bluff Chemical Agent Disposal
PO Box 20130
White Hall, AR 71612
Is anyone out there, or does
anyone know, an
expert on the allotropes of phosphorus?
I'm working on the
effects for the chemicals listed in the next edition of the Dictionary
Pyrotechnics--a freebie for a pal I work with on NFPA 1126, the standard
before a proximate audience.
My old Hawleys gives on CAS #
all forms and says elemental phosphorus can have allotropes that are
yellow), red, and black." Other references list a brown allotrope
Here's the deal. ACGIH has two entries in their big
* White phosphorus CAS# 7723-14-0 which has no
TLV, but a
DFG MAK 0.05 mg/m3.
* Yellow phosphorus CAS# 12185-10-3 has a
mg/m3; MAK 0.05 and a NIOSH REL of 0.1 mg/m3.
And there's no
red phosphorus or any other color.
Pyrotechs use white and
their suppliers as well as other experts list the White as CAS 7723-14-0
as 12185-10-3. And if I google various sources I can get different
numbers almost at will. They all contradict each other.
if white and yellow are really different allotropes? Does
know which CAS # goes with which? Specifically is the
12185-10-3 for yellow or for red? It's to look like ACGIH might be
on this one.
Thanks for thinking on
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