Registration Dossier
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EC number: 204-679-6 | CAS number: 124-09-4
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure = 1000 Pa at 78.5°C, 2333 Pa at 94.2°C (experimental)
Vapour pressure = 27 Pa at 20°C, 107 Pa at 40°C, 363 Pa at 60°C (extrapolated)
Key value for chemical safety assessment
- Vapour pressure:
- 1 000 Pa
- at the temperature of:
- 78.5 °C
Additional information
Two key studies are presented, with a set of experimental results ranging from 500 Pa at 66.5°C to 100200 Pa at 200.5°C.
The values presented above are for the use temperature of the substance, that will represent a worst-case for occupational exposure.
Moreover, they are not adequate for the purpose of environment risk assessment, therefore the linear regression were derived to extrapolate more relevant and realistic values. Both regressions are very consistent, but in order to retain single values for risk assessments, the extrapolation from the BASF study will be prefered to the Rhodia study as the minimal experimental temperature is lower.
Supporting studies provide data consistent with the selected experimental values above, and estimated data at ambient temperature, confirmed by QSAR estimation.
At 20°C, the calculated value falls within the definition of a Volatile Organic Compound. However this value can be considered as overestimated and cannot be used with high confidence due to the absence of data on the solid substance.
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