Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2005
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes
Type of method:
static method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- batch No.of test material:
62630034
- Expiration date of the lot/batch: 17.01.2007
- Purity:
96.6 %

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
At room temperature in the dark
Key result
Temp.:
20 °C
Vapour pressure:
20 Pa

Because the measured vapour pressures were > 0.1 Pa, no correction for thermal transpiration was made.

The test substance was considered to show ideal behaviour. Thus, the vapour pressure curve was derived by using a least squares method to calculate a straight line that best fits the measured data (Clapeyron). The vapour pressure at 20°C was extrapolated from the vapour pressure curve. The three test temperatures, in degrees Celsius (°C), are also expressed in degrees kelvin (K). Temperature in Kelvin = Temperature in °C +273.15.

Conclusions:
Using the Static Technique, the vapour pressure of Phytosphingosine at 20°C was determined to be:
0.20 ± 0.03 Pa = (1.5 ± 0.2)x10^-3 mm Hg
Executive summary:

The determination of the vapour pressure was performed in accordance with the following guidelines: OECD guidelines for Testing chemicals, Guideline No.104: "Vapour pressure curve", July 27, 1995.

Using the Static Technique, the vapour pressure of Phytosphingosine at 20°C was determined to be: 0.20 ± 0.03 Pa = (1.5 ± 0.2)x10^-3 mm Hg.

Description of key information

Using the Static Technique, the vapour pressure of Phytosphingosine at 20°C was determined to be:

0.20 ± 0.03 Pa = (1.5 ± 0.2)x10 ^-3 mm Hg

Key value for chemical safety assessment

Vapour pressure:
0.2 Pa
at the temperature of:
20 °C

Additional information