Benzenamine, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(oxy)]bis-

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study was conducted in compliance with the EU Method No. A.4 for the determination of physicochemical properties, Directive 97/69/EEC (OJ No. L383A, 29.12.92), and the OECD Guidelines for Testing of Chemicals No. 104.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

GLP compliance:

yes (incl. QA statement)

Remarks:

The Department of Health of the Government of the United Kingdom

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

3-{[4'-(3-aminophenoxy)-[1,1'-biphenyl]-4-yl]oxy}aniline

EC Number:

700-102-1

Cas Number:

105112-76-3

Molecular formula:

C24H20N2O2

IUPAC Name:

3-{[4'-(3-aminophenoxy)-[1,1'-biphenyl]-4-yl]oxy}aniline

Details on test material:

- Name of test material (as cited in study report): 3,3-(4,4-biphenylenedioxy)dianiline
- Physical state: Off-white powder
- Analytical purity: > 99 %
- Lot/batch No.: 20070501
- Expiration date of the lot/batch: 30 April 2008
- Storage condition of test material: Room temperature
- Other: Date of receipt 28 August 2007

Results and discussion

Vapour pressure

Vapour pressure 1

Temp.:

136 °C

Vapour pressure:

0.001 Pa

Vapour pressure 2

Temp.:

25 °C

Vapour pressure:

0 Pa

Remarks on result:

other: Maximum vapour pressure obtained by extrapolation by linear regression from 136 °C back to 25 °C

Applicant's summary and conclusion

Conclusions:

The vapour pressure of 3,3-(4,4-biphenylenedioxy)dianiline was found to be <= 0.00006 Pa at 25 °C.

Executive summary:

The vapour pressure of the test substance was determined using a vapour pressure balance according to EU Method A4 and OECD Guideline No. 104. Only minor deflections of the microbalance were obtained at the upper end of the temperature range investigated (approximately 136 °C, just below the known melting temperature of 144.5 to 146.0 °C). A maximum vapour pressure was calculated based on a series of deflection readings at 136 °C. The mass differences caused by sample vapour pressure at 136 °C was 0.31 ug (mean value of three determinations), leading to a calculated vapour pressure of 0.00051 Pa at 136 °C.

To calculate the vapour pressure at 25 °C, the regression line from a plot of log(10)Vp versus 1/T was extrapolated from 136 °C back to 25 °C. To allow this, a slope of -1000 was applied.

The maximum vapour pressure of 3,3-(4,4-biphenylenedioxy)dianiline at 25 °C was thus 0.00006 Pa.