Registration Dossier
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EC number: 947-957-9 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 9th - 19th September, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 23rd March, 2006
- Deviations:
- no
- GLP compliance:
- not specified
- Type of method:
- other: estimation using the Grain-Watson method
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- <= 6.3 Pa
- Test no.:
- #2
- Temp.:
- 50 °C
- Vapour pressure:
- <= 60 Pa
- Conclusions:
- The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.
- Executive summary:
The vapour pressure of the test item was determined in accordance with OECD TG 104. The experimentally-determined vapour pressure of the test item at 20°C was not in the recommended range of 1 to 1000 mbars for DSC measurements. Therefore an estimation procedure in accordance with OECD TG 104 was used (Grain-Watson method). This method is applied for vapour pressures between 10E03 to 10E-07 mbar. The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.
Reference
Description of key information
Based on a weight of evidence approach the test item has an estimated vapour pressure of 0.45 Pa at 20°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.45 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the test item was determined in accordance with OECD TG 104. The experimentally-determined vapour pressure of the test item at 20°C was not in the recommended range of 1 to 1000 mbars for DSC measurements. Therefore an estimation procedure in accordance with OECD TG 104 was used (Grain-Watson method). This method is applied for vapour pressures between 10E03 to 10E-07 mbar. The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.
A measured vapour pressure is available for Phosphoric acid, C4 and C12-14(even numbered) alkyl esters. Since this substance contains similar chain lengths as the C8 -12 esters, and in addition, a significant proportion of C4 esters, this measured result is considered to be more representative of the likely vapour pressure of the substance and is adopted for exposure assessment.
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.
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