Reaction products of methacrylic acid and 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bisoxirane

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

other: Company data

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Data cited in test reports on other physico-chemical properties

Reason / purpose for cross-reference:

reference to other study

Deviations:

not specified

Principles of method if other than guideline:

No data

GLP compliance:

not specified

Key result

Temp.:

ca. 20 °C

Vapour pressure:

< 1 hPa

Conclusions:

In another test report, the vapour pressure is mentioned to be <1 hPa at 20 °C.

Executive summary:

The vapour pressure is not tested, because in another test report, it is mentioned to be <1 hPa at 20 °C.

Reference 2

Endpoint:

vapour pressure

Type of information:

(Q)SAR

Adequacy of study:

weight of evidence

Study period:

2010

Reliability:

4 (not assignable)

Justification for type of information:

QSAR prediction: migrated from IUCLID 5.6

Principles of method if other than guideline:

QSAR predictions using the US-EPA program MPBPWIN v1.43 (September 2008) for three constituents.

Type of method:

other: QSAR

Temp.:

25 °C

Vapour pressure:

1.5 other: E-15 mmHg

Remarks on result:

other: Constituent 1, corresponding to 2.0 E-13 Pa

Temp.:

25 °C

Vapour pressure:

1.26 other: E-12 mmHg

Remarks on result:

other: Constituent 2, corresponding to 1.7 E-10 Pa

Vapour pressure:

5.78 other: E-16 mmHg

Remarks on result:

other: Constituent 3, corresponding to 7.7 E-14 Pa

Conclusions:

The vapour pressures of the three constituents were predicted by QSAR estimation. The predicted vapour pressures were all below 2.0 E-10 Pa. Thus it is concluded that the vapour pressure of Small Vinyl Ester is negligible.

Executive summary:

The vapour pressures of the three constituents were predicted by QSAR estimation using US-EPA's program MPBPWIN v1.43 (September 2008).The predicted vapour pressures were all below 2.0 E-10 Pa. Thus it is concluded that the vapour pressure of Small Vinyl Ester is negligible.

Reference 3

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Qualifier:

no guideline followed

Principles of method if other than guideline:

The purpose of the study was to determine the equilibrium vapour concentration of the more predominant and volatile chemical components of Small Vinyl Ester in a saturated atmosphere. 500g of material (either pure technical substance or the substance dissolved at 50% with styrene) was placed in a closed 25 litre vessel and a 24 period was allowed for the liquied and gas phase to achieve equilbrium. The saturated gas was then analysed by UPLC to determine the concentration of the relevent components.

GLP compliance:

no

Type of method:

other: Measurement of concentration in a saturated atmosphere

Vapour pressure:

Pa

Remarks on result:

other: The concentration of Small Vinyl Ester components in the gas phase was below the detection limit ie <0.28 mg/ m3 gas

Conclusions:

The concentration of bis-GMA isomers in the gas phase was below the detection limit ie <0.28 mg/ m3 gas

Executive summary:

The purpose of the study was to estimate the worst case potential exposure likely to arise from working with this substance under relatively open conditions. A saturated atmosphere was created above a sample of technical substance and technical substance in styrene under static conditions. This atmosphere was then analysed for the presence of the more predominant and volatile chemical components of Small Vinyl Ester. None of the chemical components were detected.

Description of key information

The vapour pressure is not tested, because in another test report, it is mentioned to be <1 hPa at 20 °C. QSAR estimations for the three major constituents predict the vapour pressure to be <2.0 E-10 Pa.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

20 °C

Additional information

Company data says that the vapour pressure is <1 hPa at 20 °C. No test report available. The information is given in another test report.

The vapour pressures of the three constituents were predicted by QSAR estimation using US-EPA's program MPBPWIN v1.43 (September 2008).The predicted vapour pressures were all below 2.0 E-10 Pa. Thus it is concluded that the vapour pressure of Small Vinyl Ester is negligible.