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EC number: 807-817-9 | CAS number: 52690-72-9
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:
- 14/11/1995-04/08/1997
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- The study was conducted according to an internationally recognised method, but without detailed documentation, and with technical inaccuracy (distant extrapolation). The substance identification is not complete (composition missing). Therefore validation applies with restrictions.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 1981
- GLP compliance:
- no
- Type of method:
- dynamic method
- Remarks:
- ebulliometer
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.925 Pa
- Conclusions:
- Low volatility (based on volatility bands criteria for occupational exposure (Chesar / ECETOC TRA), << 500 Pa).
- Executive summary:
The vapour pressure of the test substance was measured according to OECD104 guideline, dynamic (ebulliometer) method.
Three measurements were recorded between ca 80 and 140°C. The coefficients of the non-linear Antoine's equation between VP and 1/T were calculated.
From this relationship, the extrapolated vapour pressure of the substance at 20°C is 0.925 Pa.
Reference
The report contains graphical results, but detailed values are not provided.
The coefficients of the Antoine's equation are as follows:
VP(T) = 10exp{A-[B/(t+C)]} (mmHg)
A=5.7454;
B=1092.555;
C=118.228;
T = temperature in °C
Description of key information
(extrapolated result) Low volatility.
Key value for chemical safety assessment
- Vapour pressure:
- 0.925 Pa
- at the temperature of:
- 20 °C
Additional information
A reliable experimental study, conducted according to a recognized OECD method, is available. Despite restrictions due to distant extrapolation and substance identification, 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.
