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EC number: 279-255-7 | CAS number: 79770-29-9
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Principles of method if other than guideline:
- The vapour pressure of the test item is too low so the dynamic method according to OECD Guideline for the Testing of Chemicals 103 is not
suitable. Therefore the determination of the normal boiling point was carried out via vapour pressure measurement by effusion method, weight
loss, according to OECD Guideline for the Testing of Chemicals 104. - GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- < 0 hPa
- Conclusions:
- p20°C < 1*10-6 hPa, p25°C < 1*10-6 hPa, p50°C < 1*10-6 hPa
At the temperature applied the vapour pressure descended perpetually at constant temperature and reached the
identification limit of the most sensitive measurement technique.
At 54.1°C the vapour pressure is between 1.05*10 -5 and 8.00* 10 -6 hPa.
Reference
p20°C < 1*10-6 hPa, p25°C < 1*10-6 hPa, p50°C < 1*10-6 hPa
At the temperature applied the vapour pressure descended perpetually at constant temperature and reached the
identification limit of the most sensitive measurement technique.
At 54.1°C the vapour pressure is between 1.05*10 -5 and 8.00* 10 -6 hPa.
Description of key information
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
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