Benzene, ethenyl-, ar-bromo derivs.

Vapour pressure

Link to relevant study record(s)

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.