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Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental Starting Date: 03 December 2013 Experimental Completion Date: 10 March 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
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
Type of method:
pycnometer method
Type:
density
Density:
727 kg/m³
Temp.:
20 °C
Type:
relative density
Density:
0.727
Temp.:
20 °C

Results

Results of duplicate determinations of density are shown in the following table:

 

Table 3.4

 

Measurement

Determination

1

2

Mass of pycnometer (g)

17.3276

17.4095

Mass of pycnometer and purified water at 20.0ºC (g)

27.5106

27.5680

Mass of pycnometer and test item at 20.0ºC (g)

24.7374

24.8186

Density of water at 20.0ºC (kg/m3)

998.20

998.20

Density (kg/m3)

726.36

728.04

Relative density

0.72638

0.72806

 

Mean density:                         727 kg/m3
Temperature:                          20.0 ± 0.5ºC
Mean relative density              0.727

Conclusions:
Please see the Executive Summary for the Conclusion section of the report.
Executive summary:

The determination was carried out using the pycnometer method, 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.

Conclusion

The density of the test item has been determined to be 727 kg/m3 at 20.0 ± 0.5°C, relative density 0.727.

 

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental Starting Date: 03 December 2013 Experimental Completion Date: 10 March 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
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
Type of method:
pycnometer method
Type:
density
Density:
741 kg/m³
Temp.:
20 °C
Type:
relative density
Density:
0.741
Temp.:
20 °C

Results

Results of duplicate determinations of density are shown in the following table:

 

Table 3.4

 

Measurement

Determination

1

2

Mass of pycnometer (g)

17.3277

17.4097

Mass of pycnometer and purified water at 20.0ºC (g)

27.5108

27.5682

Mass of pycnometer and test item at 20.0ºC (g)

24.8780

24.9517

Density of water at 20.0ºC (kg/m3)

998.20

998.20

Density (kg/m3)

740.12

741.10

Relative density

0.74014

0.74112

 

Mean density:                       741 kg/m3
Temperature:                        20.0 ± 0.5ºC
Mean relative density             0.741

Conclusions:
The density of the test item has been determined to be 741 kg/m3 at 20.0 ± 0.5°C, relative density 0.741.
Executive summary:

The determination was carried out using the pycnometer method, 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.

      

Conclusion

The density of the test item has been determined to be 741 kg/m3 at 20.0 ± 0.5°C, relative density 0.741.

Endpoint:
relative density
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Justification for type of information:
1. Hypothesis for the analogue approach:
The hypothesis for the analogue approach is that both the registration substance, Hydrocarbons, C9-C11, n-alkanes, isoalkanes, <2% aromatics (target substance), and the test substances, Hydrocarbons, C8-C11, n-alkanes, isoalkanes, <2% aromatics (source substance) and Hydrocarbons, C9-C12, n-alkanes, isoalkanes, <2% aromatics (source substance), are produced from the same Fischer-Tropsch substance, GTL Gasoil, by fractional distillation.

The source substances contain the all of the constituents of the target substance. The substances have constituents that are part of the same homologous series and have many constituents in common. The substances therefore have qualitatively similar properties (RAAF Scenario 2 applies).
2. Source and target chemical(s)
The source substance Hydrocarbons, C8-C11, n-alkanes, isoalkanes, <2% aromatics is composed of linear, branched and cyclic hydrocarbons of chain length C8-C11
The source substance Hydrocarbons, C9-C12, n-alkanes, isoalkanes, <2% aromatics, is composed of linear, branched and cyclic hydrocarbons of chain length C9-C12
The target substance, Hydrocarbons, C9-C11, n-alkanes, isoalkanes, <2% aromatics, is composed of linear, branched and cyclic hydrocarbons of chain length C9-C11.
3. Analogue approach justification
The constituents of the source and target substances are all hydrocarbons. Identical constituents have identical physicochemical profiles. The source substances cover the full carbon chain length of the target substance.
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Type:
density
Density:
727 kg/m³
Temp.:
20 °C
Type:
relative density
Density:
0.727
Temp.:
20 °C
Type:
density
Density:
741 kg/m³
Temp.:
20 °C
Type:
relative density
Density:
0.741
Temp.:
20 °C
Type:
density
Density:
0.77 g/cm³
Temp.:
15 °C
Endpoint:
density, other
Remarks:
density
Type of information:
other: Data obtained from a secondary source
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Remarks:
The result is sourced from secondary literature. The original reference was not available for review and no further information is available.
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
ASTM D4052
GLP compliance:
not specified
Type:
density
Density:
0.74 g/cm³
Temp.:
15 °C
Type:
density
Density:
0.736 g/cm³
Temp.:
20 °C
Conclusions:
Density values of 0.7401 g/cm3 and 0.7363 g/cm3 at 15°C and 20°C respectively were reported for the substance in a secondary source to which reliability could not be assigned.

Description of key information

The relative density of the substance is 0.727 -0.741 at 20 ± 0.5°C  

Key value for chemical safety assessment

Additional information

There are no reliable measured relative density data for the submission substance. However, reliable data are available for related substances in the relevant carbon number range, including other Fischer-Tropsch process-derived substances.

In OECD 109 studies using the pycnometer method, which was conducted in compliance with GLP, Hydrocarbons, C8-C11, n-alkanes, isoalkanes, <2% aromatics (GTL Solvent GS160) and Hydrocarbons, C9-C12, n-alkanes, isoalkanes, <2% aromatics (GTL Solvent GS170) had measured relative density values of 0.727at 20 ± 0.5°C (density = 727 kg/m3 at 20 ± 0.5°C) and 0.741 at 20 ± 0.5°C (density = 741 kg/m3 at 20 ± 0.5°C) respectively. The results are considered to be reliable and are used as weight of evidence.

Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics has a measured density value of 0.77 g/cm3 at 15°C using an oscillating densitometer.

In a secondary source to which reliability could not be assigned, density values of 0.7401 g/cm3 and 0.7363 g/cm3 at 15°C and 20°C respectively were reported for the submission substance.