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Density

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Reference
Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
21-06-2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected: July 2012; signature: November 2012
Type of method:
air comparison pycnometer (for solids)
Type:
density
Density:
1 290 kg/m³
Temp.:
25 °C
Type:
density
Density:
1.29 g/cm³
Temp.:
25 °C
Remarks on result:
other: Applicant converted units to 1.29 g/cm3 at 25.0 ± 0.5°C

Calibration

The pressure readings and the calculated volume for the reference and sample cells are shown in Table 2

Table 2: Calibration readings

Determination

ƿ1

ƿ2

ƿ3

ƿ4

Reference Cell Volume (cm3)

Sample Cell Volume (cm3)

1

17.053

6.453

17.333

8.589

90.552

148.745

2

17.133

6.489

17.049

8.450

90.831

148.992

3

17.104

6.479

17.037

8.444

90.892

149.055

 

Sample

The pressure readings, calculated volumes and density values obtained for the test item are shown in Table 3

Table 3: Test substance measurement

Determination

Test

ƿ1

ƿ2

Volume (cm3)

Density

(kg/m3)

Mean Density (kg/m3)

1

A

17.068

6.570

3.911

1.29 x 103

1.30 x 103

 

B

17.428

6.708

3.890

1.30 x 103

 

 

C

17.106

6.584

3.888

1.30 x 103

 

2

A

17.249

6.641

3.958

1.28 x 103

1.28 x 103

 

B

17.101

6.583

3.921

1.29 x 103

 

 

C

17.104

6.584

3.916

1.29 x 103

 

 

Temperature: 25.0 ± 0.5ºC

Mean density: 1.29 x 103 kg/m3

Conclusions:
The density of the test item has been determined to be 1.29 g/cm^3 (or 1290 kg/m^3) at 25.0 ± 0.5°C.
Executive summary:

The density was determined using the gas pycnometer method within EU Method A.3 and OECD TG 109 under GLP. All measurements were performed in triplicate and two determinations were performed to ensure a reproducibility of less than ± 20 kg/m^3 was obtained. The mean density of the test item has been determined to be 1.29 g/cm^3 (or 1290 kg/m^3) at 25.0 ± 0.5°C.

Description of key information

Density: 1.29 g/cm^3 at 25 ± 0.5 °C, EU Method A.3: gas-comparison pycnometer method, 2013

Key value for chemical safety assessment

Additional information

The density was determined using the gas pycnometer method within EU Method A.3 and OECD TG 109 under GLP. All measurements were performed in triplicate and two determinations were performed to ensure a reproducibility of less than ± 20 kg/m^3 was obtained. The mean density of the test item has been determined to be 1.29 g/cm^3 (or 1290 kg/m^3) at 25.0 ± 0.5°C.

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