Registration Dossier
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EC number: 500-740-9 | CAS number: 162492-07-1
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- other: calculation
- Specific details on test material used for the study:
- CAS No.: 162492-07-1; Batch No.: lab; Purity: unknown by the sponsor, treated as 100% pure; Appearance: white to off-white solid
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- Under the study conditions, the vapour pressure of the test substance was estimated to be 2.1E-18 Pa at 25 °C, using the Modified Watson Correlation. From this result, it can be concluded that omitting experimental measurement is justified because the vapour pressure of the test substance is too low.
- Executive summary:
A study was conducted to determine the vapour pressure of the test substance according to OECD Guideline 104 and EU Method A.4, in compliance with GLP. The purpose of the study was to calculate the vapour pressure of the test substance at 25 °C. The vapour pressure is a function of the temperature and is specified in Pascal (Pa) or in mm Hg. To determine the vapour pressure of a test substance, the Modified Watson Correlation method was used. This method is described by Lyman et al. (1990). The boing point of the test substance was calculated to be 918 K. Under the study conditions, the vapour pressure of the test substance was estimated to be 2.1E-18 Pa at 25 °C, using the Modified Watson Correlation. From this result, it can be concluded that omitting experimental measurement is justified because the vapour pressure of the test substance is too low (van Rijsbergen, 2002).
Reference
The boing point of the test substance was calculated to be 918 K, using 204.675, 105000 and 1846.1 for Rd, B and Pa, respectively. The vapour pressure of the test substance was calculated to be 2.1E-18 Pa at 25 °C, using 918 K for Tb and 1.19 for m.
In conclusion, the vapour pressure of the test substance was estimated to be 2.1E-18 Pa at 25 °C, using the Modified Watson Correlation.
From this result, it can be concluded that omitting experimental measurement is justified because the vapour pressure of the test substance is too low.
Description of key information
The vapour pressure was determined according to OECD Guideline 104 and EU Method A.4 (van Rijsbergen, 2002).
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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