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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 17, 2011 - January 5, 2012
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:
pycnometer method
Key result
Type:
density
Density:
1.09 g/cm³
Temp.:
20 °C
Remarks on result:
other: Aqueous solution with a solid content of approximately 39%
Key result
Type:
relative density
Density:
1.09
Temp.:
20 °C
Remarks on result:
other: Aqueous solution with a solid content of approximately 39%

 

Test 1

Test 2

Mean

Mass empty pycnometer (A)

30.9325 g

30.9310 g

30.93175 g

Mass pycnometer with water (B)

40.6660 g

40.6585 g

 

Volume of the pycnometer

9.7511 cm3

9.7450 cm3

9.7481 cm3

Mass pycnometer with test substance (C)

41.5864 g

41.5957 g

 

Density

1.093 g/cm3

1.094 g/cm3

1.09 g/cm3

The individual measurements were obtained with an accuracy of < 0.01 g/cm3. According to the guideline, the density of the test substance is given as the mean value.

Conclusions:
A pycnometer was used for the determination of the density and relative density of an aqueous solution of the substance, in accordance with OECD 109, EU Method A.3 and GLP. The density of the test material (aqueous solution) at 20ºC was 1.09 g/cm3. The relative density was 1.09
Endpoint:
relative density
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
The rationale to read across the data is attached in Section 13.
Reason / purpose:
read-across source
Key result
Type:
density
Density:
1.33 g/cm³
Temp.:
20 °C
Remarks on result:
other: Density of the substance (a freeze dried aqueous solution)
Key result
Type:
relative density
Density:
1.33 other: without dimension
Temp.:
20 °C
Remarks on result:
other: Relative density of the substance (a freeze dried aqueous solution)
Conclusions:
A gas comparison pycnometer was used for the determination of the density and relative density of the substance in accordance with OECD 109 (1995), EU Method A.3 (2008), EPA OPPTS 830.7300 (2002) and according to GLP principles. The density and relative density of the substance at 20ºC was 1.33 g/cm3 and 1.33, respectively. This result is read-across to the registered substance.

Description of key information

The density and relative density of an aqueous solution of the substance at 20ºC was determined to be 1.09 g/cm3 and 1.09, respectively.

The density and relative density of a freeze dried aqueous solution of a substance analogue (C12-C14 alkyl derivatives) at 20ºC was 1.33 g/cm3 and 1.33, respectively.

Key value for chemical safety assessment

Relative density at 20C:
1.33

Additional information

A gas comparison pycnometer was used for the determination of the density and relative density of a substance analogue (C12-C14 alkyl derivatives). A freeze dried aqueous solution was used in this study.

A pycnometer was used for the determination of the density and relative density of an aqueous solution of the substance. Both studies were performed in accordance with OECD 109 (1995) and according to GLP principles.

The rationale to read across the data is attached in Section 13.