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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental starting date: 05 November 2016 Experimental completion date: 10 July 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
air comparison pycnometer (for solids)
Specific details on test material used for the study:
Identification: Dichlorobis(η-cyclopentadienyl)titanium
(CAS# 1271-19-8)
Appearance/physical state: red powder
Batch: 07088501022
Purity: 99.8%
Expiry date: 04 March 2019
Storage conditions: room temperature, in the dark
Key result
Type:
relative density
Density:
1 600 kg/m³
Temp.:
20 °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 (cm3)

Sample Cell Volume (cm3)

1

17.192

6.509

17.381

8.613

90.746

148.938

2

17.435

6.604

17.485

8.665

90.905

149.090

3

17.143

6.496

17.910

8.882

90.847

148.900

Mean reference cell volume   :          90.833 cm3
Mean sample cell volume       :          148.976 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

Test

P1(sample)
(psig)

P2(sample)

(psig)

Volume (cm3)

Density

(kg/m3)

Mean Density (kg/m3)

1

A

17.150

7.024

18.029

1.60 x 103

1.60 x 103

B

17.722

7.257

17.990

1.60 x 103

C

17.776

7.278

17.956

1.60 x 103

2

A

17.721

7.164

15.123

1.60 x 103

1.60 x 103

B

17.653

7.119

14.571

1.66 x 103[1]

C

17.303

6.994

15.091

1.61 x 103

Mean density             :          1.60 x 103 kg/m3
Relative density         :          1.60
Temperature               :          20.0 ± 1.0 °C

[1] Identified as a statistically significant outlier (Grubbs’ test, P = 0.05) and therefore excluded from the calculation of the overall mean values.

 Discussion

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


Conclusions:
The density of the test item has been determined to be 1.60 x 103 kg/m3 at 20.0 ± 1.0 °C; relative density: 1.60.
Executive summary:

1.60 x 103 kg/m3 at 20.0 ± 1.0 °C, relative density value 1.60, using a gas comparison pycnometer procedure designed to be compatible with Method A3 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

The density of the test item has been determined to be 1.60 x 103 kg/m3 at 20.0 ± 1.0 °C; relative density: 1.60.

Key value for chemical safety assessment

Relative density at 20C:
1.6

Additional information