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:
weight of evidence
Study period:
9th - 19th September, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
23rd March, 2006
Deviations:
no
GLP compliance:
not specified
Type of method:
other: estimation using the Grain-Watson method
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
<= 6.3 Pa
Test no.:
#2
Temp.:
50 °C
Vapour pressure:
<= 60 Pa
Conclusions:
The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.
Executive summary:

The vapour pressure of the test item was determined in accordance with OECD TG 104. The experimentally-determined vapour pressure of the test item at 20°C was not in the recommended range of 1 to 1000 mbars for DSC measurements. Therefore an estimation procedure in accordance with OECD TG 104 was used (Grain-Watson method). This method is applied for vapour pressures between 10E03 to 10E-07 mbar. The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.

Description of key information

Based on a weight of evidence approach the test item has an estimated vapour pressure of 0.45 Pa at 20°C.

Key value for chemical safety assessment

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

Additional information

The vapour pressure of the test item was determined in accordance with OECD TG 104. The experimentally-determined vapour pressure of the test item at 20°C was not in the recommended range of 1 to 1000 mbars for DSC measurements. Therefore an estimation procedure in accordance with OECD TG 104 was used (Grain-Watson method). This method is applied for vapour pressures between 10E03 to 10E-07 mbar. The estimated vapour pressure is <= 6.3 Pa at 20°C and <= 60 Pa at 50°C.

A measured vapour pressure is available for Phosphoric acid, C4 and C12-14(even numbered) alkyl esters. Since this substance contains similar chain lengths as the C8 -12 esters, and in addition, a significant proportion of C4 esters, this measured result is considered to be more representative of the likely vapour pressure of the substance and is adopted for exposure assessment.