1-bromo-4-(trans-4-ethylcyclohexyl)benzene

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20.10.2005-21.02.2006

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

no

Type of method:

air comparison pycnometer (for solids)

Key result

Type:

relative density

Remarks:

solid

Density:

1.324 other: dimensionsless

Temp.:

20 °C

Key result

Type:

relative density

Remarks:

liquid

Density:

1.22 other: dimensionsless

Temp.:

20 °C

Relative Density of Solids: Gas comparison pycnometer

Before the measurement the test item was filled into the test vessel and cooled down in a refrigerator for crystallization. Subsequently the test item was stored at ambient temperature (24.7 - 24.8 °C) in the gas comparison pycnometer under Helium atmosphere. The test item remained solid under these conditions, due to the fact that the melting point is > 30 °C.

Two test series with different weights were performed at ambient temperature (24.7 - 24.8 °C) with the solid test item.

Results of the two tests

Measurement	Density ρPR/ g·cm
1	1.3249
2	1.3240
Mean	1.324

Mean density ρPRfor the two test series:1.324 g/cm3. The relative density of the test item at 20 °C (compared with water at 4 °C) was determined to be 1.324.

Relative Density for Liquids; Glass pycnometer

Before the measurement the test item was melted. The liquid test item was filled into the glass pycnometer and cooled down to 20 °C. The test item was tempered at this temperature before the measurement. The test item remained liquid under these conditions, due to the fact that the freezing point is < 4 °C. Two tests with different pycnometers were carried out at a temperature of 20 °C.

Results of the two tests

Measurement	Density ρPR/ g·cm
1	1.2226
2	1.2195
Mean	1.221

The relative density (compared to water at 4 °C) of the liquid test item is: D420= D2020x 0.998 = 1.221 x 0.998 = 1.22

Conclusions:

The relative density (compared to water at 4 °C) of the liquid test item is 1.324

Executive summary:

A study was performed in accordance with Commission Regulation (EC) No. 440/2008, method A.3 and OECD TG 109 by using the gas comparison pycnometer at 20.0°C. Two tests were performed and the density of the test item was determined. The relative density of the test item was determined to be 1.324.

Description of key information

The relative density of the test item at 20 °C (compared with water at 4 °C) was determined to be 1.324.

Key value for chemical safety assessment

Relative density at 20C:

1.324

Additional information

A study was performed in accordance with Commission Regulation (EC) No. 440/2008, method A.3 and OECD TG 109 by using the gas comparison pycnometer at 20 °C. Two tests were performed and the density of the test item was determined. The relative density of the test item (calculated from the mean density of the test item) was determined to be D₄²⁰= 1.324.