I would like to ask about the relationship between the boiling point of DMAC and the vacuum level
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This post was last edited by Refinery Operator on 2011-4-25 at 12:01. At room temperature and under a vacuum pressure of 0.09 MPa, is the volatility of DMAC significant?
How is it that no one knows this? Apart from what’s stated in the references: freezing point –20°C, boiling point 166°C; 96°C at 10.7 kPa, 85–87°C at 4.4 kPa, 74–74.5°C at 3.47 kPa
Its volatility is not high; the saturated vapor pressure at room temperature is 266 Pa. Based on this, the vapor concentration can be determined as 266/101325. Temperature, Vapor Pressure (KPa): 273.150 – 4.36187E+01; 278.150 – 6.45278E+01; 283.150 – 9.39821E+01; 288.150 – 1.34877E+02; 293.150 – 1.90885E+02; 298.150 – 2.66603E+02; 303.150 – 3.67724E+02; 308.150 – 5.01211E+02; 313.150 – 6.75495E+02; 318.150 – 9.00685E+02; 323.150 – 1.18878E+03; 328.150 – 1.55390E+03; 333.150 – 2.01251E+03; 338.150 – 2.58368E+03; 343.150 – 3.28929E+03; 348.150 – 4.15429E+03; 353.150 – 5.20690E+03; 358.150 – 6.47886E+03