2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenyl-2H-imidazol-2-yl]-4,5-diphenyl-1H-imidazole

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

10 April 2017 to 08 May 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

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)

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

GLP compliance:

yes

Type of method:

effusion method: isothermal thermogravimetry

Test material

Test material information

Constituent 1

Reference substance name:

2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenyl-2H-imidazol-2-yl]-4,5-diphenyl-1H-imidazole

EC Number:

230-555-6

EC Name:

2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenyl-2H-imidazol-2-yl]-4,5-diphenyl-1H-imidazole

Cas Number:

7189-82-4

Molecular formula:

C42H28Cl2N4

IUPAC Name:

2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl-2'H-1,2'-biimidazole

Test material form:

solid: crystalline

Details on test material:

Appearance: Yellow crystalline powder
Test item storage: At room temperature
Stable under storage conditions until: 01 February 2018 (expiry date)

Results and discussion

Vapour pressure

Vapour pressure 1

Key result

Temp.:

20 °C

Vapour pressure:

< 0 Pa

Remarks on result:

other:

Remarks:

based on weight loss over 160-190 °C that was less than the weight loss of chrysene over the same temperature interval

Vapour pressure 2

Key result

Temp.:

25 °C

Vapour pressure:

< 0 Pa

Remarks on result:

other:

Remarks:

based on weight loss over 160-190 °C that was less than the weight loss of chrysene over the same temperature interval

Any other information on results incl. tables

From the weight loss over the 160 -190 °C, a log p versus1/T curve with a coefficient of correlation (r) of > 0.99 could not be obtained. The observed weight losses were non-linear and after the experiments a discolouration of the substance was observed, indicating reaction and/or decomposition.

Therefore the weight loss was compared with the weight loss of the reference substance chrysene over the same temperature interval.

Applicant's summary and conclusion

Conclusions:

The vapour pressure of the substance at 20 °C is < 8.4E-07 Pa

Executive summary:

In a test using the isothermal thermogravimetric effusion method, the vapor pressure of the substance was obtained by measuring weight loss over a temperature interval between 160 -190°C. A log pversus1/T curve with a coefficient of correlation (r) of > 0.99 could not be obtained. The observed weight losses were non-linear and after the experiments a discolouration of the substance was observed, indicating reaction and/or decomposition.

Therefore the weight loss was compared with the weight loss of the reference substance chrysene over the same temperature interval. The vapour pressure at 20 °C is < 8.4E-07 Pa (smaller than the vapour pressure of chrysene)