(1-methylethylidene)bis(4,1-phenyleneoxy-3,1-propanediyl) bismethacrylate

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

07 Apr - 11 May 2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Test procedure followed standard methods but resulted in only an upper limit.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Deviations:

no

GLP compliance:

yes

Type of method:

effusion method: by loss of weight or by trapping vaporisate

Test material

Test material information

Constituent 1

Reference substance name:

Procrylat

IUPAC Name:

Procrylat

Details on test material:

- Name of test material (as cited in study report): MTDID 9115
- Physical state: Clear colourless to yellowish liquid
- Analytical purity: 96%
- Expiration date of the lot/batch: 24 November 2015
- Storage condition of test material: at room temperature

Results and discussion

Vapour pressure

Vapour pressure 1

Temp.:

25 °C

Vapour pressure:

< 0 Pa

Remarks on result:

other: <9.6E-09 mm Hg

Vapour pressure 2

Temp.:

20 °C

Vapour pressure:

< 0 Pa

Remarks on result:

other: < 6.3E-09 mm Hg

Any other information on results incl. tables

In the temperature range of 170 °C and 200 °C, weight loss was too small for accurate measurement. A valid log p versus 1/T curve could not be obtained for the test substance. Therefore the coefficient of correlation (r) could not be determined. Testing at higher temperature is not possible due to reaction and/or decomposition of the test substance. Since accurate determination of the vapour pressure was not possible, the weight losses were compared with the results of chrysene at the same temperatures. The weight loss of the test substance was lower than the weight loss of chrysene. The vapor pressure of procrylate is therefore reported as being less than the established value for chrysene at the relevant temperatures.

Applicant's summary and conclusion

Conclusions:

The vapor pressure of procrylat is < 8.4E-07 Pa (< 6.3E-09 mm Hg) at 20 °C and < 1.3E-06 Pa (< 9.6E-09 mm Hg) at 25 °C as determined by the OECD 104 method.

Executive summary:

The vapor pressure of procrylat was determined by the isothermal thermogravimetric effusion method. In the temperature range of 170 °C and 200 °C, weight loss was too small for accurate measurement. Accurate determination of the vapour pressure was not possible; the vapor pressure of procrylate is therefore reported as being less than the established value for chrysene at the relevant temperatures. The test was done according to EU Method A.4 “Vapour pressure” and OECD 104 “Vapour Pressure Curve” and in accord with GLP guidelines but only resulted in an upper limit; therefore this study is classified as reliable with restriction.