10/30/2023 0 Comments Liquid n2The actual temperature obtained will depend on how finely crushed and well mixed the components are, and could be as high as -10°. A little more detailed list taken from the Hoveyda group website at Boston College. Temperatures between -20 and -80° can be obtained using varied mixtures of ethylene glycol and ethanol over dry ice. For longer or unmonitored reactions, it may be best to invest in a cryocooler. Most of these methods require continuous monitoring to ensure the temperature remains steady. The low temperature of these baths is determined both by the appropriate use of solvent as well as a cryogenic agent such as liquid nitrogen, dry ice (CO 2) or ice. All rights reserved.\)Ĭooling baths are used extensively in organic chemistry for a variety of reasons. On behalf of the United States of America. Shall not be liable for any damage that may result fromįor NIST Standard Reference Data products. However, NIST makes no warranties to that effect, and NIST Uses its best efforts to deliver a high quality copy of theĭatabase and to verify that the data contained therein haveīeen selected on the basis of sound scientific judgment. The National Institute of Standards and Technology (NIST) Data from NIST Standard Reference Database 69:.Go To: Top, Phase change data, References The Reaction 1/2 N 2 + 1/2 O 2 = NO from Spectroscopic Data, The Heat Capacity and Entropy of Nitrogen. Vapor pressures of liquid nitrogen between the triple and critical points, Study of the Critical Point of Several Difficultly LIquifiable Gases: Nitrogen, Carbon Monoxide, Oxygen and Methane, Some vapor pressure and P,V,T data on nitrogen in t he range 65 to 140 K, The Reaction 1/2 N2 + 1/2 O2 = NO from Spectroscopic Data, Vapor pressure curves and triple points in the temperature region from 14 to 90 k, International Thermodynamic Tables of the Fluid State - 6 Nitrogen, Pergamon, New York, 1979. Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature, Termodynamic Properties of Nitrogen from the Freezing Line to 2000 K at Pressures to 1000 MPa, SRD 156 – Clathrate Hydrate Physical Property Database SRSD 3 – Web Thermo Tables (WTT), professional edition SRSD 2 – Web Thermo Tables (WTT), "lite" edition SRD 103b – Thermo Data Engine (TDE) for pure compounds, SRD 103a – Thermo Data Engine (TDE) for pure compounds. (TRC) data available from this site, much more physicalĪnd chemical property data is available from the In addition to the Thermodynamics Research Center Requires a JavaScript / HTML 5 canvas capable browser.Ĭoefficents calculated by NIST from author's data. Uncertainty assigned by TRC = 0.02 mol/l TRC Uncertainty assigned by TRC = 0.003 bar TRC Uncertainty assigned by TRC = 0.05 bar TRC Uncertainty assigned by TRC = 0.007 bar TRC Uncertainty assigned by TRC = 0.2 K IPTS-68, critical point not observed and Tc taken from literature but equation would allow pc to be calculated. Uncertainty assigned by TRC = 0.0007 bar TRCĬrystal phase 1 phase Uncertainty assigned by TRC = 0.0001 bar Average Pressure TRC Uncertainty assigned by TRC = 0.0002 bar TRC Uncertainty assigned by TRC = 0.0005 bar TRC Uncertainty assigned by TRC = 0.06 K temperature measured with He gas thermometer TRCĬrystal phase 1 phase Uncertainty assigned by TRC = 0.06 K TRC Uncertainty assigned by TRC = 0.005 K TRC TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny directorĪC - William E. Secretary of Commerce on behalf of the U.S.A. Your institution may already be a subscriber.įollow the links above to find out more about the dataīy the U.S. With the development of data collections included in The purpose of the fee is to recover costs associated NIST subscription sites provide data under theĭata Program, but require an annual fee to access.
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