Also consider gasses compressed into liquid form: Liquid Nitrogen Liquid Oxygen Liquified Petroleum Gas (Propane, butane, propylene, etc) Liquid Chlorine among many others..... These can be deadly when the container is heated past the point where the l iquid is converted to gass too rapidly for the pressure relief valve/device to compensate. Boom. Most cylinders are designed to "banana peel", but there is always a possibi lity of shrapnel, depending on how rapidly the cylinder is overheated. Even in normal usage in a dewar or similar container, these liquids sublime , creating pressure. Todd Perkins Airgas Mid America p3wt3r**At_Symbol_Here**charter.net --- On Mon, 9/28/09, Diane Amellwrote: > From: Diane Amell > Subject: [DCHAS-L] Pressure-Generating Liquid > To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU > Date: Monday, September 28, 2009, 10:28 AM > > > > > Last week one of our investigators threw me a curve > ball. She had an inquiry from an employer or consultant > regarding "pressure-generating liquids". The term > is new to me. I have a mental picture based on the words in > the phrase which may or may not be accurate. The only > reference I have found so far regards the old-fashioned soda > acid and self-generating foam water-type extinguishers in > the federal portable fire extinguishers standard. I have > searched the federal OSHA, NIOSH and ACS Web sites with no > luck. Anyone familiar with such chemicals? Thank you. > =A0 > - Diane Amell, MNOSHA >
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