Reaction mass of 2-(3-ethylphenyl)oxirane and 2,2’-(1,3-phenylene)dioxirane and 2,2'-(1,4-phenylene)dioxirane

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Between 09 June 2009 and 24 June 2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Date of inspection: 19/08/2008 Date of Signature: 04/03/2009

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

Reaction mass of 2-(3-ethylphenyl)oxirane and 2,2’-(1,3-phenylene)dioxirane and 2,2'-(1,4-phenylene)dioxirane

EC Number:

935-853-6

IUPAC Name:

Reaction mass of 2-(3-ethylphenyl)oxirane and 2,2’-(1,3-phenylene)dioxirane and 2,2'-(1,4-phenylene)dioxirane

Constituent 2

Reference substance name:

Reaction mass of bis(epoxyethyl) benzene and (ethylphenyl) oxirane

IUPAC Name:

Reaction mass of bis(epoxyethyl) benzene and (ethylphenyl) oxirane

Details on test material:

- Name of test material (as cited in study report): Reaction mass of bis(epoxyethyl) benzene and (ethylphenyl) oxirane
- Substance type: Multiconstituent
- Physical state: clear extremely pale yellow liquid
- Analytical purity: 80 - 95%
- Lot/batch No.: 200901317-17
- Stability under test conditions : stable
- Storage condition of test material : approximately 4°C in the dark

Results and discussion

Vapour pressure

Temp.:

25 °C

Vapour pressure:

4.3 Pa

Remarks on result:

other: The test material did not change in appearance under the conditions used in the determination

Transition / decomposition

Transition / decomposition:

no

Any other information on results incl. tables

Results:

A number of runs (4) were performed and a plot of Log10 (vapour pressure)(Pa)) versus reciprocal temperature (1/T (K)) for each run gives the following statistical data using an unweighted least squares treatment for each run:

Run 1. 

A plot of Log₁₀(vapour pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 1 gives the following statistical data using an unweighted least squares treatment.

Slope                                       -3304.365
Standard deviation in slope       29.062

Intercept                                        11.730
Standard deviation in intercept    0.105

The results obtained indicate the following vapour pressure relationship:

Log₁₀(Vp (Pa)) = -3304.365/temp (K) + 11.730

The above yields a vapour pressure (Pa) at 298.15 K with a common logarithm of 0.647.

Run 2 

A plot of Log₁₀(vapour pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 2 gives the following statistical data using an unweighted least squares treatment.

Slope                                       -3292.627
Standard deviation in slope       35.094

Intercept                                        11.679
Standard deviation in intercept    0.126

The results obtained indicate the following vapour pressure relationship:

Log₁₀(Vp (Pa)) = -3292.627/temp(K) + 11.679

The above yields a vapour pressure (Pa) at 298.15 K with a common logarithm of 0.636.

Run 3 

A plot of Log₁₀(vapour pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 3 gives the following statistical data using an unweighted least squares treatment.

Slope                                       -3299.616
Standard deviation in slope       20.887

Intercept                                        11.700
Standard deviation in intercept    0.075

The results obtained indicate the following vapour pressure relationship:

Log₁₀(Vp (Pa)) = -3299.616/temp(K) + 11.700

The above yields a vapour pressure (Pa) at 298.15 K with a common logarithm of 0.633.

Run 4 

A plot of Log₁₀(vapour pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 4 gives the following statistical data using an unweighted least squares treatment.

Slope                                       -3290.674
Standard deviation in slope       18.344

Intercept                                        11.661
Standard deviation in intercept    0.066

The results obtained indicate the following vapour pressure relationship:

Log₁₀(Vp (Pa)) = -3290.674/temp(K) + 11.661

The above yields a vapour pressure (Pa) at 298.15 K with a common logarithm of 0.624.

Run	Log10[Vp(25ºC)]
1	0.647
2	0.636
3	0.633
4	0.624
Mean	0.635
Vapour Pressure	4.3 Pa

The test material did not change in appearance under the conditions used in the determination.

Applicant's summary and conclusion

Conclusions:

The vapour pressure of the test material has been determined to be 4.3 Pa at 25ºC.

Executive summary:

The vapour pressure was determined using a vapour pressure balance with assurence being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 25°C. Testing was conducted using Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008. The vapour pressure of the test material has been determined to be 4.3 Pa at 25ºC.