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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1983-05
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: General valid laboratory method. Not documented in detail.
Principles of method if other than guideline:
Dynamic method: Measurement of vapour pressure curve
GLP compliance:
no
Type of method:
dynamic method
Remarks:
Measurement of vapour pressure curve
Temp.:
20 °C
Vapour pressure:
0.004 hPa
Remarks on result:
other: calculated from the measured vapour pressure diagramm according Clausius Clapeyron equation. R² = 0.9972

Vapour pressure curve:

p (hPa)    T (°C)     
-----------------------------
4          115.1    
6.67       128.5
13.33      140.7 
26.7       154.9
40         164.5
53.3       171.4
66.7       176.7

At higher temperatures decomposition was observed.

Conclusions:
Vapour pressure: 0.004 hPa at 20 °C.
Executive summary:

Vapour pressure: 0.004 hPa at 20 °C.

Description of key information

The vapour pressure of N-[3-(dimethylamino)propyl]methacrylamide was determined according to dynamic method (calulated from a

measured vapour pressure curve) to be 0.004 hPa at 20 °C. (Evonik Röhm Services, 1983)

Key value for chemical safety assessment

Vapour pressure:
0.4 Pa
at the temperature of:
293 K

Additional information

Calculated at 20 °C according Clausius Clapeyron equation from a measured vapour pressure diagramm (dynamic method).