Tar bases, coal, lutidine fraction

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Remarks:

Other density types indicated (migrated information): density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental start date: 05 January 2016, Experimental completion date: 05 January 2016

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

2012 (pycnometer method)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Version / remarks:

Commission Regulation (EC) No 440/2008, dated May 30, 2008

Deviations:

no

GLP compliance:

no

Remarks:

However, the study was performed in a test facility which has been certified to be in compliance with the principles of GLP.

Type of method:

pycnometer method

Type:

relative density

Density:

0.934

Temp.:

20 °C

Remarks on result:

other: Temperature ± 0.5 ºC

Type:

density

Density:

934 kg/m³

Temp.:

20 °C

Remarks on result:

other: Temperature ± 0.5 ºC

Type:

density

Density:

0.934 g/cm³

Temp.:

20 °C

Remarks on result:

other: Temperature ± 0.5 ºC

The masses recording during the calibration and test item evaluation procedures are presented in Table 1.

Table 1: Density Determination

Measurement	Determination
	1	2
Mass of pycnometer [g]	17.4094	17.3279
Mass of pycnometer and distilled water at 20.0 °C [g]	27.5625	27.5077
Mass of pycnometer and test item at 20.0 °C [g]	26.8983	26.8541
Density of water at 20.0 °C [kg/m³]	998.20	998.20
Density [kg/m³]	933	934
Relative density [1]	0.933	0.934

Conclusions:

In a valid, reliable and conclusive study according to OECD TG 109 (2012) and Method A.3 (EC) No 440/2008, the density of the test item was determined to be 0.934 g/cm³ at 20.0 ± 0.5 °C (relative density 0.934).

Executive summary:

The density of the liquid test item at 20 °C was determined in a non-GLP study using the pycnometer method according to the OECD TG 109 (2012) and EU A.3 (Commission Regulation (EC) No 440/2008) protocols. The experiment ise considered relevant, adequate and conclusive.

A calibration was carried out by determining the mass of distilled water required to fill the pycnometer. The pycnometer was then emptied and dried to constant weight. The pycnometer with a defined volume was weighed and filled with the test item. After equilibration at 20 °C in a water bath, the filled pycnometer was re-weighed. Duplicate determinations were performed. The density of the test item has been determined to be 0.934 g/cm³ at 20.0 ± 0.5 °C, corresponding to a relative density of 0.934.

Description of key information

In a valid, reliable and conclusive study according to OECD TG 109 (2012) and Method A.3 (EC) No 440/2008, the density of the test item was determined to be 0.934 g/cm³ at 20.0 ± 0.5 °C (relative density 0.934).

Key value for chemical safety assessment

Relative density at 20C:

0.934