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Physical & Chemical properties

Vapour pressure

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vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
equivalent or similar to guideline
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
Type of method:
dynamic method
under argon atmosphere
Key result
Test no.:
19.73 °C
Vapour pressure:
6.67 hPa
Remarks on result:
Key result
Test no.:
24.99 °C
Vapour pressure:
9.33 hPa

The regression of the results leads with a mean deviation of 0.21 % to the following equation (range of measurement 6.58 - 136.67°C):

ln(p/hPa) = 9.4947 - 3200.55 / (200.89 + t/°C)

The vapour pressure was determined to be 6.7 hPa at 20°C and 9.3 hPa at 25°C.

Description of key information

6.7 hPa at 20°C

9.3 hPa at 25°C

Key value for chemical safety assessment

Vapour pressure:
6.7 hPa
at the temperature of:
20 °C

Additional information

The determination was carried out by dynamic method under Argon atmosphere.