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Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02 December 2020 - 11 February 2021

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted according to OECD 109 and EU A.3 guidelines, under GLP and without deviation and with certificate of analysis included.

Reason / purpose for cross-reference:

reference to other study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Remarks:

2018-11-15

Type of method:

pycnometer method

Type:

relative density

Density:

975.8 kg/m³

Temp.:

20 °C

Remarks on result:

other: Determination 1 - relative density at 20 °C in reference with water at 4 °C

Type:

relative density

Density:

976 kg/m³

Temp.:

20 °C

Remarks on result:

other: Determination 2 - relative density at 20 °C in reference with water at 4 °C

Key result

Type:

relative density

Density:

975.9 kg/m³

Temp.:

20 °C

Remarks on result:

other: final result (mean value of two independent determinations) - relative density at 20°C in reference with water at 4°C.

Results of the two determinations are reported in the following table:

 

Measurement     Determination  1  2  Temperature (°C)  20.0 20.0  Mass of empty pycnometer (g)  31.4394 31.6196   Mass of the pycnometer filled with ultrapure water (g)  81.4890 81.6374   Mass of the pycnometer filled with the test item (g) 80.3643  80.5226   Density of the test item (kg/m^3)  975.8  976.0  Mean Density (kg/m^3)     975.9

The two determinations are within the validity criteria of the method: (less than 1% of difference).

No additional determination was performed.  

Conclusions:

The density of the test item was determined to be 975.9 kg/m3 at 20.0 +/- 0.1°C (mean of two determinations).
The relative density of the test item was determined to be D204 = 0.976

Executive summary:

A study was performed to determine the density of the test item. The method followed was designed to be compliant with the OECD Guideline for Testing of Chemicals No. 109, "Density of Liquids and Solids"(2012) and the Method A.3 of Commission Regulation No. 440/2008, “Relative Density”

In this method, the density is determined at a specific temperature using a pycnometer.
Density is calculated from the difference in weight between the full and the empty pycnometer and its volume. The pycnometer volume is determined by carrying out the experiment at the selected temperature with the quantity of ultrapure water required to fill the pycnometer.

Two trials were conducted.

The following results were obtained:

Trial  Density (kg/m3) at 20.0 +/- 0.1°C  1  975.8  2  976.0  Mean  975.9

 

These values respect validity criteria (less than 1% of difference). Moreover, the bath used to maintain the pycnometer at 20°C did not vary by more than 0.1°C.

The density of the test item was determined to be 975.9 kg/m³ at 20.0 +/- 0.1°C (mean value of two independant determinations).

The relative density of the test item was determined to be D²⁰₄ = 0.976.

Description of key information

Relative Density: 0.976 at 20 + 0.1ºC, EU Method A.3 - pycnometer method, 2020

Key value for chemical safety assessment

Relative density at 20C:

0.976

Additional information

A study was performed to determine the density of the test item. The method followed was designed to be compliant with the OECD Guideline for Testing of Chemicals No. 109, "Density of Liquids and Solids"(2012) and the Method A.3 of Commission Regulation No. 440/2008, “Relative Density”.

The density of the test item was determined to be 975.9 kg/m³ at 20.0 +/- 0.1°C (mean value of two independant determinations).