Registration Dossier
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EC number: 272-897-9 | CAS number: 68919-40-4
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:
- July 06, 2018 - May 3rd, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- static method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 41 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 52 Pa
- Conclusions:
- Using the extended Clapeyron's law, the vapour pressure of the test item was calculated to be 0.41 mbar (41 Pa) at 20°C and 0.52 mbar (52 Pa) at 25°C.
- Executive summary:
The vapour pressure of the test item was investigated in a GLP-compliant study performed in accordance with EU Method A.4 (Vapour Pressure) and OECD Guideline 104 (Vapour Pressure Curve). Using the extended Clapeyron's law, the vapour pressure of the test item was calculated to be 0.41 mbar (41 Pa) at 20°C and 0.52 mbar (52 Pa) at 25°C.
Reference
The measured vapour pressures were used to regress the coefficients of Clapeyron's law reported below using the following equation:
ln Pcal = A - B / (T + C)
with Pcal (calculated pressure) in mbar and T in K.
| Temperature | K |
| Pressure | mbar |
| A | 14.29166 |
| B | 4497.01866 |
| C | 2.87716 |
Description of key information
The vapour pressure of the test item was investigated in a GLP-compliant study (Demangel, 2019) performed in accordance with EU Method A.4 (Vapour Pressure) and OECD Guideline 104 (Vapour Pressure Curve). Using the extended Clapeyron's law, the vapour pressure of the test item was calculated to be 0.41 mbar (41 Pa) at 20°C and 0.52 mbar (52 Pa) at 25°C.
Key value for chemical safety assessment
- Vapour pressure:
- 41 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the test item was investigated in a GLP-compliant study (Demangel, 2019) performed in accordance with standard methods, without deviations. The study is considered as reliable without restriction (Klimisch 1) and was selected as key study for the endpoint.
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.
