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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
8/4/2000
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Information is derived from a reliable non-GLP in-house study using the transpiration method equivalent to OECD TG 104, gas saturation method.
Reference:
Composition 1
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
no
Type of method:
dynamic method
Test material information:
Composition 1
Key result
Temp.:
24 °C
Vapour pressure:
2.4 Pa
Transition / decomposition:
no

The transpiration method is used to determine the VP for materials having 10-3Pa to 103Pa. The substance has a VP of 2.4 Pa and is within the domain of the model.

This method is highly accurate with a relative standard deviation of < 5%, based on triplicate measurements. The use of flow controlling sampling techniques allows for accurate measurements over many orders of magnitude of VP values under a variety of conditions.

Conclusions:
The vapour pressure of Isocyclogeraniol was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method, in a reliable non-GLP study. This is a dynamic method and has recently been updated for use of low volatile substances. A precisely known volume of air is sampled through a trap containing the sorbent Tenax TA. The adsorbed compound is desorbed and eluted onto a GC column where it is identified and quantified using a calibration curve. The mass of analyte per unit volume collected is used to calculate the vapour pressure. The vapour pressure of Isocyclogeraniol was found to be 2.4 Pa at 24°C.
Executive summary:

The vapour pressure of the Isocyclogeraniol was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method. The vapour pressure of the substance was found to be 2.4 Pa at 24°C.

Description of key information

The vapour pressure of the Isocyclogeraniol was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method. The vapour pressure of the substance was found to be 2.4 Pa at 24°C.

Key value for chemical safety assessment

Vapour pressure:
2.4 Pa
at the temperature of:
24 °C

Additional information