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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline Study with detailed documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: by loss of weight or by trapping vaporisate

Test material

Constituent 1
Reference substance name:
MAEEBP
IUPAC Name:
MAEEBP
Constituent 2
Chemical structure
Reference substance name:
2-[2-(4-benzoylphenoxy)ethoxy]ethyl methacrylate
EC Number:
943-359-7
Molecular formula:
C21H22O5
IUPAC Name:
2-[2-(4-benzoylphenoxy)ethoxy]ethyl methacrylate
Details on test material:
- Name of test material (as cited in study report): MAEEBP- Physical state: colourless liquid- Composition of test material, percentage of components: 4-methacryloyl diethoxy benzophenone 85 area%, impurities 4-hydroxybenzophenone <5%, 4-methacryloyl benzophenone <5%, polymethacrylate <5%- Lot/batch No.: 150301- Expiration date of the lot/batch: Sep. 2015- Storage condition of test material: Until the 28. Apr. 2015, the test item was stored in a closed vessel at room temperature (18.6 – 21.3 °C) and then in a fridge at 3.4 - 9.2 °C away from light and humidity

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
0.001 Pa
Temp.:
25 °C
Vapour pressure:
0.001 Pa
Transition / decomposition
Transition / decomposition:
no

Any other information on results incl. tables

The vapour pressure of the test item MAEEBP was determined at six different temperatures (30, 45, 60, 75, 90 and 105 °C) following EU A.4 using the effusion method (weight loss). Experiments 1 - 3 (nominal temperatures 30, 45, 60 °C) could not be evaluated as they yielded a curve with an inverse slope. Therefore these experiments were not used for the calculation of the vapour pressure. When visible contaminations, caused by explosive evaporation of the test item, were observed, the cells were meticulously cleaned and weighed. This weight was used as initial weight for the subsequent measurements. To avoid bias, these measurements were not used for calculations.

Three experiments could be evaluated as they showed relevant and reproducible weight loss. All evaluated experiments showed good reproducibility, giving relative standard deviations of less than 25 % and good correlation.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of MAEEBP was determined following OECD 104 resp. EU A.4 using the effusion method (weight loss). The vapour pressure was determined to be 0.000555 Pa (20°C) and 0.000743 Pa (25°C).

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