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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
no
Type of method:
effusion method: Knudsen cell
Key result
Test no.:
#7
Temp.:
120 °C
Vapour pressure:
0.002 Pa
Key result
Test no.:
#8
Temp.:
135 °C
Vapour pressure:
0.01 Pa
Key result
Test no.:
#9
Temp.:
150 °C
Vapour pressure:
0.057 Pa

Experiments 1 - 6 (nominal temperatures 30 – 105 °C) showed no significant weight loss. Therefore, these experiments were not included in the evaluation and the measured data are not included in this report.

Conclusions:
For the test substance L-Tyrosine, 3,5-dinitro- (wet product), the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 1.18 * 10-10 Pa
Vapour pressure at 25 °C: 3.50 * 10-10 Pa

Description of key information

For the test substance L-Tyrosine, 3,5-dinitro- (wet product), the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:

Vapour pressure at 20 °C:        1.18* 10-10Pa

Vapour pressure at 25 °C:        3.50* 10-10Pa

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information