Registration Dossier
Registration Dossier
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EC number: 619-447-3 | CAS number: 99607-70-2
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:
- 1991-09-12 - 1991-11-21 (experimental phase)
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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:
- Automatized gas saturation method with online GC detection.
- GLP compliance:
- yes
- Type of method:
- gas saturation method
- Temp.:
- 80.5 °C
- Vapour pressure:
- 0.018 Pa
- Remarks on result:
- other: average of 4 experimental determinations
- Temp.:
- 100.6 °C
- Vapour pressure:
- 0.157 Pa
- Remarks on result:
- other: average of 4 experimental determinations
- Temp.:
- 185.9 °C
- Vapour pressure:
- 54.4 Pa
- Remarks on result:
- other: average of 4 experimental determinations
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: calculated from vapour pressure curve for solid substance (extrapolated)
- Transition / decomposition:
- no
- Conclusions:
- The study is considered to be adequate and reliable.
- Executive summary:
Vapour pressure at 25 °C : 5.31 x 10-6 Pa (extrapolated)
Vapour pressure curve for the solid substance (extrapolated): log10 P[Pa] = 19.2385 - 7308.76 x 1 / T[K]
Reference
Vapour pressure curve for the liquid substance (i.e. above ca. 69 °C):
log10 P[Pa] = 13.371 - 5300.30 * 1 / T[K]
Vapour pressure curve for the solid substance (i.e. below ca. 69 °C; by extrapolation):
log10 P[Pa] = 19.2385 - 7308.76 * 1 / T[K]
Enthalpy of fusion: 38.45 kJ/mol
Melting point: 69.2 °C
Description of key information
Vapour pressure (Rordorf, 25°C): 0.00000531 Pa
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
A guideline study is available which is considered to be reliable and adequate, and is carried forward for use in risk assessment, classification and labelling. The parameters of the vapour pressure curve are given in the endpoint study record.
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.
