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EC number: 940-437-2 | CAS number: 926-50-1
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:
- 27 March to 22 April 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- gas saturation method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.027 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 material was determined according to the OECD guideline No. 104 (headspace method, similar to the gas saturation method), and under GLP.
After equilibration, the concentration in the vapour phase was measured in triplicate.
The vapour pressure at 20°C was calculated from the average headspace concentration using the vapour pressure equation.
The Vapour pressure of the test item is 0.027 Pa at 20°C.
Reference
Headspace vapour concentrations of test item as found after an equilibration time of 5 h, 24 h and 28 h are tabulated below. The value obtained after an equilibration time of 2 h was not used for the calculation of the vapour pressure, as it can be deduced from the results that headspace saturation was not yet reached.
Table 4.6/1: Headspace concentration of test item
Equilibration time (h) |
Headspace concentration (g/m3) |
5 |
0.0021 |
24 |
0.0020 |
28 |
0.0024 |
Average |
0.0022 |
Description of key information
Low volatility.
Key value for chemical safety assessment
- Vapour pressure:
- 0.027 Pa
- at the temperature of:
- 20 °C
Additional information
A fully reliable experimental study, conducted according to a recognized OECD method and under GLP, is available.
It is considered as a key study; the result is retained as key data for CSA.
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.
