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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:
2012-09-20 - 2012-12-19
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study with certificated GLP compliance. No methodology deficiencies are reported.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
GLP compliance:
yes (incl. certificate)
Remarks:
The Department of Health of the Government of The United Kingdom
Type of method:
pycnometer method
Type:
relative density
Density:
0.97
Temp.:
20 °C

Table 1. Results of duplicate determinations

Measurement

Determination

1

2

Mass of pycnometer [g]

17.0618

18.2206

Mass of pycnometer and distilled water at 20 °C [g]

27.2354

28.1293

Mass of pycnometer and test substance at 20 °C [g]

26.9496

27.8559

Density of water at 19.8 °C [kg/m³]

998.25

998.25

Density [kg/m³]

970.20

970.70

Relative density

0.970

0.971

Conclusions:
The study report describes a valid guideline study conducted under certificated GLP compliance. The relative density of test substance was determined as 0.970.
Executive summary:

The relative density of magnesium sulfonate target substance (CAS 231297-75-9) was determined using the pycnometer method in accordance to OECD Guideline 109 / EU Method A.3 (Fox, 2012). The pycnometer was calibrated with distilled water. All experiments were performed at 20 +/- 0.5 °C. In general, the density of a substance is the quotient of the mass (m) and the volume (V) of that substance at a specific temperature. The SI unit is kg/m³. The relative density (D20/4) is the ratio between the mass of a volume of the test substance, determined at 20 °C, and the mass of the same volume of water, determined at 4 °C (999.97 kg/m³). The relative density has no dimension. The determination was performed in duplicate, resulting in a value of 0.970 for the test substance.

Description of key information

OECD 109/EU Method A.3_Relative density: 0.970 at 20 +/- 0.5 °C 

Key value for chemical safety assessment

Relative density at 20C:
0.97

Additional information

The key value was determined using the pycnometer method according to OECD Guideline 109/EU Method A.3 (Fox, 2013).