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EC number: 203-956-9 | CAS number: 112-30-1
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:
- 2009-05-11
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- other: NFT 20-048
- GLP compliance:
- no
- Type of method:
- static method
- Temp.:
- ca. 20 °C
- Vapour pressure:
- < 5 Pa
- Temp.:
- ca. 50 °C
- Vapour pressure:
- 15 Pa
- Executive summary:
Measurement 1 2 Temperature in °C 20.0 50.0 Vapour Pressure in Pa < 5 15 - Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Value obtained from a recognised source of physico-chemical data. This reference is considered as definitive for vapour pressure values.
- Principles of method if other than guideline:
- No details are available on the guideline used to determine this result.
- GLP compliance:
- not specified
- Temp.:
- 25 °C
- Vapour pressure:
- 0.011 hPa
- Conclusions:
- A vapour pressure value of 0.0113 hPa at 25ºC is reported in a collection of reliable data which has been subject to peer-review. The result is considered to be reliable.
Referenceopen allclose all
Description of key information
The vapour pressure of a commercial decan-1-ol product is <5 Pa at 20°C, supported by literature data and QSAR. A consistent and reliable measurement of 1.13 Pa at 25°C using a highly pure sample is available (Daubert and Danner, 1989).
The quantified value at ambient temperature from Daubert and Danner is used in environmental modelling. This value is useful particularly in view that the key study result is a limit value.
Key value for chemical safety assessment
- Vapour pressure:
- 1.13 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of <5 Pa at 20°C was determined in a reliable study.
It is supported by a value of 0.433 Pa at 25°C for a pure product, taken from a reliable reference source (Boublik et al., 1984), and a consistent structure-based prediction made using the MPBPVP software from EPI Web 4.0 (2009). A value of ca. 15 Pa was measured at elevated temperature for another commercial product, of higher purity. A consistent and reliable measurement of 1.13 Pa at 25°C using a highly pure sample is available (Daubert and Danner, 1989).
The quantified value at ambient temperature from Daubert and Danner is used in environmental modelling.
Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:
As chain length increases, vapour pressure decreases. This is because molecular weight is higher and intermolecular forces in the substance are all higher.
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