Registration Dossier
Registration Dossier
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EC number: 430-150-6 | CAS number: -
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:
- No data
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- The study was conducted according to OECD/EC guideline. The substance is adequately characterised with its purity. However validation applies with restrictions, due to technical inaccuracy (distant extrapolation).
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- no
- Type of method:
- dynamic method
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.343 hPa
- Remarks on result:
- other: extrapolated value
- Conclusions:
- (extrapolated) Low volatility.
- Executive summary:
The vapour pressure of the test substance was measured according to OECD 104/EU A4 guideline, dynamic method. The result at 25°C was extrapolated from a series of measurements between 30 and 180 hPa, corresponding to 107 to 155°C.
The vapour pressure was extrapolated to be 0.343 hPa (34.3 Pa) at 25 °C.
Reference
| Temperature (°C) | Pressure (hPa) |
| 106.8 | 30.3 |
| 114.7 | 41.6 |
| 121.3 | 54.4 |
| 126.6 | 66.6 |
| 132.6 | 83.7 |
| 138.4 | 103.0 |
| 142.6 | 118.1 |
| 148.8 | 141.7 |
| 155.4 | 183.3 |
An extrapolation was made using a non-linear regression with the measuring points according to the permutation matrix of Fremann-Carrol (rap FRF/D-107) and by Antoine equation to obtain the vapor pressure at 25 °C. The boiling temperature was verified by the Siwoloboff method.
After the regression the following parameters were:
P(T) = 10{ A - [B/(t+C)] }(mmHg); P(T) = (1013/760)*10{ A - [B/(t+C)] }(hPa)
A = 7.7681; B = 2251.284; C = 244.363; T =Temperature, °C Boiling Temperature = 216.3°C (extrapolated)
Description of key information
(extrapolated) Low volatility.
Key value for chemical safety assessment
- Vapour pressure:
- 34 Pa
- at the temperature of:
- 25 °C
Additional information
A reliable experimental study, conducted according to a recognized OECD/EU method, is available. Despite restrictions for accuracy, due to distant extrapolation, it is considered as a key study. The result is retained as key data.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
