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EC number: 205-769-8 | CAS number: 150-76-5
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:
- May 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Data generated according to internationally accepted testing guidelines (OECD TG 107). Although this study has not been performed according to GLP, the test method and results are well described.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- static method
- Temp.:
- 20 °C
- Vapour pressure:
- 0.009 hPa
- Transition / decomposition:
- no
- Conclusions:
- The vapour pressure determined at 20°C is 0.9 Pa.
- Executive summary:
Vapour pressures of paramethoxyphenol (CAS 150-76-5) were measured. Product purity was 99.5%.
A static method, specially developed for very low pressures was used as suggested by OECD guidelines (chemicals measurement n°104).
Vapour pressures were measured at 4 temperatures in the temperature range 50 - 20 °C. Data were checked with the
Antoine law.
The linearity of the vapour pressure curve (logP versus 1/T curve) has been checked, with an R² = 0.9913.
The vapour pressure determined at 20°C is 0.9 Pa.
Reference
Description of key information
One key study, reliability 1, conducted according to standardised guidelines.
Vapour pressure = 0.9 Pa at 20°C
Key value for chemical safety assessment
- Vapour pressure:
- 0.9 Pa
- at the temperature of:
- 293.15 K
Additional information
A supporting study (reliability 2) from a Handbook shows a vapour pressure< 0.0133 hPa at 25°C.
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