Reaction mass of 1,4-bis(methylamino)anthraquinone and 1,4-bis[(2-ethylhexyl)amino]anthraquinone and 1-[(2-ethylhexyl)amino]-4-(methylamino)anthraquinone and 9,10-Anthracenedione, 1,4-bis(pentylamino)-, branched and linear and 9,10-Anthracenedione, 1-(methylamino)-4-(pentylamino)-, branched and linear and 9,10-Anthracenedione, 1-[(2-ethylhexyl)amino]-4-(pentylamino)-, branched and linear

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

February 20, 2017 to May 10, 2017

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:

pycnometer method

Specific details on test material used for the study:

Identification: C.I. Solvent Blue 98
Appearance/Physical state: extremely dark blue solid block
Batch: ZA07212016
Purity: 98.0%
Expiry date: 18 July 2019
Storage conditions: room temperature in the dark

Key result

Type:

density

Density:

1 100 kg/m³

Temp.:

21.3 °C

Key result

Type:

relative density

Density:

1.1

Temp.:

21.3 °C

Calibration:

The pressure readings and the calculated volume for the reference and sample cells are shown in the following table:

Determination	P1 (psig)	P2 (psig)	P3 (psig)	P4 (psig)	Reference Cell Volume (cm^3)	Sample Cell Volume (cm^3)
1	17.025	6.444	17.057	8.447	90.829	149.141
2	17.083	6.468	17.120	8.481	90.854	149.106
3	17.078	6.466	17.081	8.463	90.802	149.024

Mean reference cell volume   :          90.828 cm³
Mean sample cell volume       :          149.090 cm³

As the reference cell volume and sample cell volume were within the defined tolerance (90.953 ± 1.0 cm³and 149.225 ± 1.0 cm³for the reference and sample cell volumes respectively) the gas comparison pycnometer was therefore considered acceptable for use.

Sample:

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

Determination	Replicate	P1(sample) (psig)	P2(sample) (psig)	Volume (cm^3)	Density (kg/m^3)	Mean Density (kg/m^3)
1	A	17.016	6.857	14.523	1.10 x 10^3	1.10 x 10^3
	B	17.040	6.868	14.567	1.10 x 10^3
	C	17.031	6.862	14.489	1.11 x 10^3
2	A	17.050	6.876	14.697	1.09 x 10^3	1.10 x 10^3
	B	16.986	6.847	14.592	1.10 x 10^3
	C	16.990	6.850	14.638	1.10 x 10^3

 Mean density             :          1.10 x 10³ kg/m³
Relative density         :          1.10
Temperature               :          21.3 ± 0.5 °C

Discussion:

Duplicate determinations were performed to ensure a reproducibility of less than ± 20 kg/m³was obtained.

The mass density of a substance varies with temperature and pressure and this variance is typically negligible for solids. Increasing the temperature of a substance may decrease its density by increasing the volume of that substance. Typical thermal expansion coefficients of solids are in the order of 10^-5°C^-1, and the volumetric expansion of stainless steel (used as calibration spheres) at 20 °C is approximately 5.2 x 10^-5°C^-1. Therefore, a change in temperature of several degrees will have no significant effect on the volume and hence the density of a solid substance.

Therefore, it was considered that the difference in temperature between 20.0 °C and normal laboratory conditions did not have a significant effect on the determined density, and therefore the calculated relative density.

Conclusions:

The density of the test item has been determined to be 1.10 x 10^3 kg/m^3 at 21.3 ± 0.5 °C and a relative density of 1.10.

Executive summary:

Density. 1.10 x 10³kg/m³ at 21.3 ± 0.5 °C, relative density 1.10, using a gas comparison pycnometer method, designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.

Description of key information

Density. 1.10 x 10³kg/m³ at 21.3 ± 0.5 °C, relative density 1.10, using a gas comparison pycnometer method, designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.

Key value for chemical safety assessment

Relative density at 20C:

1.1

Additional information

1.10 x 10³kg/m³ at 21.3 ± 0.5 °C, relative density 1.10, using a gas comparison pycnometer method, designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.