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                                  Full-service supplier of air separation plants, oxygen and nitrogen generators and CO2 plants. Gas & liquid supplier to end users and to distributors of bulk liquids & packaged gases.

                                  Physical Properties of Industrial Gases and Common Industrial Chemicals

                                  (English Units)

                                    NormalBoiling Point
                                  (1 atm)
                                  Gas Phase Properties
                                  @ 32F & @1 atm
                                  Liquid Phase Properties
                                  @ B P& @ 1 atm
                                  Triple Point Critical Point
                                  Temp. Latent Heat of Vaporization Specific Gravity Specific Heat (Cp) Density Specific Gravity Specific Heat (Cp) Temp. Pressure Temp. Pressure Density
                                  Substance Chemical
                                  Symbol
                                  Mol.
                                  Weight
                                  ?F BTU/lb Air = 1 BTU/lb F lb/cu. ft Water = 1 BTU/lb F F psia F psia lb/cu ft
                                  Air -- 28.98 -317.8 88.2 1 0.241 0.08018 0.873 0.4454 -352.1 -- -221.1 547 21.9
                                  Oxygen O2 32.00 -297.3 91.7 1.113 0.2197 0.089212 1.14 0.4058 -361.8 0.02147 -181.43 731.4 27.22
                                  Nitrogen N2 28.01 -320.4 85.6 0.9737 0.249 0.07807 0.808 0.4877 -346.0 1.81 -232.4 493 19.6
                                  Argon Ar 39.95 -302.6 69.8 1.39 0.125 0.11135 1.4 0.2575 -308.8 9.99 -188.1 711.5 33.44
                                  Carbon Dioxide CO2 44.01 -109.3a 245.5b 1.524 0.199 0.12341 1.18c -- -69.9 75.1 87.9 1070.6 29.2
                                  Hydrogen H2 2.02 -423 191.7 0.06998 3.425 0.005611 0.071 2.309 -434.6 1.045 -399.93 190.8 1.88
                                  Carbon Monoxide CO 28.01 -312.7 92.79 0.9736 0.2478 0.07806 0.79 -- -337.1 2.2 -220.4 507.5 18.79
                                  Water H2O 18.02 212 970.6 -- 0.8784d 0.0368d 0.95855 1.007 32.0 0.088 705.182 3200.5 20.1
                                  Methane CH4 16.04 -258.68 219.22 0.559 0.593 0.0448 0.425 0.8314 -296.5 1.69 -115.78 673.1 10.09
                                  Ammonia NH3 17.03 -28 589.3 0.6003 0.520 0.04813 0.6819 -- -107.9 0.88 271.4 1657 14.7
                                  Helium He 4.00 -452.06 8.72 0.139 1.25 0.01114 0.124 1.086 NONE NONE -450.31 33 4.347
                                  Neon Ne 20.18 -410.9 37.08 0.701 0.25 0.05621 1.207 0.4483 -415.4 6.29 -379.8 384.9 30.15
                                  Krypton Kr 83.80 -244 46.2 2.887 0.06 0.2315 2.41 0.1273 -251.3 10.6 -82.8 798 56.7
                                  Xenon Xe 131.30 -162.6 41.4 4.55 0.038 0.365 3.06 0.08121 -169.2 11.84 61.9 847 68.67
                                  Ozone O3 47.99 -168.3 6530 1.656 9.41 -- 1.352 -- -314.5 1.65 10.13 808.1 33.71
                                  Hydrogen Sulfide H2S 34.08 -76.4 235.6 1.198 0.245 0.09608 0.9136 -- -- -- 212.9 1306.5 21.6
                                  Sulfur Dioxide SO2 64.06 14 167.5 2.279 0.149 0.18272 1.46 -- -103.9 0.2429 315.4 1143 32.6
                                  Ethane C2H6 30.07 -127.53 210.41 1.056 0.386 0.08469 0.546 -- -297.9 14.70 86.96 708.35 12.67
                                  Ethylene C2H4 28.05 -154.8 208 0.978 0.399 0.07868 0.567 -- -272.5 1.0146 49.82 745 14.2
                                  Acetylene C2H2 26.04 -118.4a 264c 0.906 0.383 0.07314 0.613 -- -116.0 17.7 96.8 907 14.4
                                  Propane C3H8 44.10 -43.67 183.05 1.573 0.388 0.1261 0.58 -- -- -- 206.01 616.3 13.5
                                  Propylene C3H6 42.08 -53.9 188.18 1.481 0.355 0.11249 0.61 -- -- -- 197.2 670 14.5
                                  Methanol CH3OH 32.04 148.2 473 -- 0.3274 0.0893 0.795 0.6055 -143.4 -- 464.1 1154.2 16.981

                                  a Sublimation point       b Sublimation Enthalpy       c Triple point       d Boiling point


                                  Universal Industrial Gases, Inc.
                                  Universal Cryo Gas, LLC
                                  3001 Emrick Blvd., Suite 320
                                  Bethlehem, Pennsylvania 18020 USA

                                  Phone (610) 559-7967 Fax (610) 515-0945

                                  All material contained herein Copyright 2003 / 2017 UIG. 

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