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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
Study completion date - 14 March 2003.
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
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 (incl. QA statement)
Type of method:
other: Modified Watson Correlation
Specific details on test material used for the study:
Identity: FAT 40810/A
Batch: WP 6/02
Purity: approx. 75 %
Appearance: Solid, dark brownish powder
Expiration date: 12 December 2010
Storage: At room temperature at about 20 °C
Temp.:
25 °C
Vapour pressure:
>= 3.8 - <= 66 other: x 10 E-26 Pa
Remarks on result:
other: Estimated vapour pressure value for main component and components 2 and 3.
Conclusions:
The vapour pressure of FAT 40810/A (acidic form) was estimated to be 3.8 x 10E-26 Pa for the first main component and 6.6 x 10E-25 Pa for the second and third main component at 25 °C based on the boiling point calculated and using the Modified Watson Correlation.
Executive summary:

The estimation of the vapour pressure of FAT 40810/A was based on the EEC directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.4 “Vapour Pressure", EEC Publication No. L383, December 1992 and the OECD Guideline No. 104, “Vapour Pressure", adopted July 27, 1995. The boiling point of FAT 40810/A was calculated to be approximately 781 “C for the first main component and 758 °C for the second and third main component using Meissner’s method. The calculation was performed for the free acid of the test item. An ionic character was not taken into account. The vapour pressure of FAT 40810/A (acidic form) was estimated to be 3.8 x 10E-26 Pa for the first main component and 6.6 x 10E-25 Pa for the second and third main component at 25 °C based on the boiling point calculated and using the Modified Watson Correlation.

Description of key information

The estimation of the vapour pressure of FAT 40810/A was based on the EEC directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.4 “Vapour Pressure", EEC Publication No. L383, December 1992 and the OECD Guideline No. 104, “Vapour Pressure", adopted July 27, 1995. The boiling point of FAT 40810/A was calculated to be approximately 781 “C for the first main component and 758 °C for the second and third main component using Meissner’s method. The calculation was performed for the free acid of the test item. An ionic character was not taken into account. The vapour pressure of FAT 40'810/A (acidic form) was estimated to be 3.8 x 10E-26 Pa for the first main component and 6.6 x 10E-25 Pa for the second and third main component at 25 °C based on the boiling point calculated and using the Modified Watson Correlation.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information