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EC number: 231-391-8 | CAS number: 7529-22-8
Two initial runs with results of 1.08 mbar (run 1) and 1.31 mbar (run 2) were repeated as a leak in the glassware apparatus was found after completing run 2. Therefore runs 3 and 4 were carried out after leak testing.
Based on the vapour pressures measured, a vapour pressure curve was constructed (lnP vs 1/T; p in mbar and T in Kelvin). The temperature range was 29.4 °C - 70.6 °C and 30.3 °C - 72.5 °C for run 3 and run 4, respectively.
The vapour pressure at 20 °C was extrapolated from the vapour pressure curve to be 1.48 mbar (run 3) and 1.34 mbar (run 4).
The vapour pressure of the test item was determined according to EU Method A.4. by applying the static method. The vapour pressure of the substance was extrapolated from the vapour pressure curve to be 1.41 mbar (141 Pa) at 20 °C.
The vapour pressure of NMMO was determined in a GLP study according to EU method A.4 to be 141 Pa at 20°C, following the static method (Younis, 2012).
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