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From: Gordon Miller <miller22**At_Symbol_Here**LLNL.GOV>
Subject: Questions About Perchloric Acid
Date: Nov 15, 2005 01:41 UTC
Reply-To:
Gordon Miller
In-Reply-To:
I have one good question and two dumb ones. They are: What is a good chemistry and design for a scrubber to be used to control emissions of perchloric acid from small scale heating operations done in common hoods? Is there a quantity of perchloric acid that is so small that it can be handled without benefit of a special hood, even if heated (Is there a de minimis quantity)? What is the derivation of the NFPA 45 requirement that HClO4 not be heated by flame or in an oil bath? I can guess, but I don't know. Please advise. "Inquiring minds want to know." Gordon Miller Lawrence Livermore National Laboratory P.O. Box 808 (L-379) Livermore, California 94550 (925) 423-8036 Fax (925) 422-5176 miller22**At_Symbol_Here**llnl.gov