(Credit: Joy Sheng Source: CK-12 Foundation License: CC BY-NC 3. All rights reserved.\): Influence of altitude on the boiling point of water. 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 Vapor Pressures of Liquid Oxygen Between the Triple Point and Critical Point, Study of the Critical Point of Several Difficultly LIquifiable Gases: Nitrogen, Carbon Monoxide, Oxygen and Methane, These cryogenic liquids have boiling points below -180 C and. Ī New Vapor-Pressure Measurement and a New Rational Vapor-Pressure Equation for Oxygen, The attached table indicates several physical properties of liquid nitrogen, helium and oxygen. New pressure-density-temperature measurements and new rational equations for the saturated liquid and vapor densities of oxygen, Vapor pressure curves and triple points in the temperature region from 14 to 90 k, Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature, 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 = 0.014 mol/l from density measurements 65 to 300 K, Tc from Weber, 1970 TRC Uncertainty assigned by TRC = 0.3039 bar TRC Uncertainty assigned by TRC = 0.005 bar Vapour-pressure measurements give pc=5.04332 MPa at Tc from L.A.Weber, 1970 PRT, IPTS-68, PP+ differential pressure transducer. The boiling point of a substance is the temperature at which this phase change (boiling or vaporization) occurs. In general, boiling is a phase change of a substance from the liquid to the gas phase. Uncertainty assigned by TRC = 0.3 K 4 determinations with same result TRC Note that, the boiling point associated with the standard atmospheric pressure. The figure below illustrates the boiling of liquid. The boiling point is the temperature at which the vapor pressure of a liquid is equal to the external pressure. At this point, the liquid begins to boil. Uncertainty assigned by TRC = 0.0015 K TRC Eventually a point is reached when the molecules all throughout the liquid have enough kinetic energy to vaporize. Uncertainty assigned by TRC = 0.06 K temperature measured with He gas thermometer TRC TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director 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. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data).NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data).Computational Chemistry Comparison and Benchmark Database.Electron-Impact Ionization Cross Sections (on physics web site).Microwave spectra (on physics lab web site).Use this link for bookmarking this species This structure is also available as a 2d Mol file IUPAC Standard InChIKey: MYMOFIZGZYHOMD-UHFFFAOYSA-N Copy.
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