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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
between 26 July 2010 and 29 July 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: A GLP study conducted to an appropriate, accepted guideline.
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Temp.:
25 °C
Vapour pressure:
12 Pa

Table 1: Summary of Results

Run

Log10[Vp(25°C)]

1

1.059

2

1.103

3

1.100

4

1.103

5

1.094

6

1.090

7

1.077

Mean : 1.089

Vapour Pressure : 12 Pa

In the attached pdf, full results from runs 1 to 7 are tabulated along with their corresponding plot of Log10Vp (Pa) versus reciprocal temperature (1/T(K)).

Conclusions:
The vapour pressure of the test item has been determined to be 12 Pa at 25°C.
Executive summary:

The vapour pressure was determined using a vapour pressure balance with measurements being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 25°C. Testing was conducted using a procedure designed to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008.The test item has been determined to have a vapour pressure of 12 Pa at 25°C.

Description of key information

The test item has been determined to have a vapour pressure of 12 Pa at 25°C, using a vapour pressure balance.

Key value for chemical safety assessment

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

Additional information

The key study Tremain & Atwal (2010) was performed to the guideline EU Method A.4 and in compliance with GLP. The study was therefore considered adequate for assessment as a standalone study, and accordingly assigned a reliability score of 1.