Hydrocarbons, C9-C11, n-alkanes, isoalkanes,

Density

Link to relevant study record(s)

Reference

Reference 1

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/m^3)	998.20	998.20
Density (kg/m^3)	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.

 

Reference 2

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/m^3)	998.20	998.20
Density (kg/m^3)	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.

Reference 3

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

Reference 4

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  

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.