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Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
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

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.

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).

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