Hydrocarbons, C11-C16, n-alkanes, isoalkanes,

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative density

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

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.

Justification for type of information:

The hypothesis for the analogue approach is that the test substance Hydrocarbons, C10-C13, n-alkanes, isoalkanes, <2% aromatics, contains constituents which are also constituents of the target substance, Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics. The substances have overlapping constituents and therefore have qualitatively similar properties (RAAF Scenario 2 applies).

Reason / purpose for cross-reference:

read-across: supporting information

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

Key result

Type:

density

Density:

750 kg/m³

Temp.:

20.2 °C

Key result

Type:

relative density

Density:

0.75 other: Unitless

Temp.:

20.2 °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)	17.0620	17.5869
Mass of pycnometer and distilled water at 20.2ºC (g)	27.2282	27.7623
Mass of pycnometer and test item at 20.2ºC (g)	24.7022	25.2385
Density of water at 20.2ºC (kg/m^3)	998.16	998.16
Density (kg/m^3)	750.15	750.59
Relative density	0.75017	0.75061

 

Mean density:                        750 kg/m³
Temperature:                          20.2 ± 0.5ºC
Mean relative density             0.750

Conclusions:

Please see the Executive Summary for the Conclusion.

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 750 kg/m³ at 20.2 ± 0.5°C, relative density 0.75.

Reference 2

Endpoint:

relative density

Remarks:

density

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

Experimental Starting Date: 03 December 2013 Experimental Completion Date: 11 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.

Justification for type of information:

The hypothesis for the analogue approach is that the test substance Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics contains constituents which are also constituents of the target substance, Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics. The substances have overlapping constituents and therefore have qualitatively similar properties (RAAF Scenario 2 applies).

Reason / purpose for cross-reference:

read-across: supporting information

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

Key result

Type:

density

Density:

763 kg/m³

Temp.:

20 °C

Key result

Type:

relative density

Density:

0.76 other: Unitless

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)	18.2213	17.3551
Mass of pycnometer and distilled water at 20.0ºC (g)	28.1399	27.5689
Mass of pycnometer and test item at 20.0ºC (g)	25.8009	25.1614
Density of water at 20.0ºC (kg/m^3)	998.20	998.20
Density (kg/m^3)	762.81	762.92
Relative density	0.76283	0.76294

 

Mean density:                        763 kg/m³
Temperature:                          20.0 ± 0.5 ºC
Mean relative density             0.763

Conclusions:

Please seethe Executive Summary for the Conclusion.

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 763 kg/m³ at 20.0 ± 0.5°C, relative density 0.763.

Reference 3

Endpoint:

relative density

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

Experimental Starting Date: 04 December 2013 Experimental Completion Date: 11 March 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The hypothesis for the analogue approach is that the test substance Hydrocarbons, C14-C16, n-alkanes, isoalkanes, <2% aromatics contains constituents which are also constituents of the target substance, Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics. The substances have overlapping constituents and therefore have qualitatively similar properties (RAAF Scenario 2 applies).

Reason / purpose for cross-reference:

read-across: supporting information

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

Key result

Type:

relative density

Density:

0.773 other: Unitless

Temp.:

20 °C

Key result

Type:

density

Density:

773 kg/m³

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)	17.3540	18.2211
Mass of pycnometer and distilled water at 20.0ºC (g)	27.5683	28.1411
Mass of pycnometer and test item at 20.0ºC (g)	25.2609	25.8971
Density of water at 20.0ºC (kg/m^3)	998.20	998.20
Density (kg/m^3)	772.71	772.40
Relative density	0.77273	0.77242

 

Mean density:                        773 kg/m³
Temperature:                          20.0 ± 0.5ºC
Mean relative density             0.773

 

Conclusions:

Please see the Executive Summary for the Conclusion.

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 773 kg/m³ at 20.0 ± 0.5°C, relative density 0.773.

Description of key information

The relative density of Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics at 20 ± 0.5°C is 0.7627.

Additional information

Only supporting data is available for Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics. However, data is available for structural analogues,Hydrocarbons, C10-C13, n-alkanes, isoalkanes, <2% aromatics;Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics; and Hydrocarbons, C14-C16, n-alkanes, isoalkanes, <2% aromatics and presented in the dossier. The hypothesis for the analogue approach is that the test substances, Hydrocarbons, C10-C13, n-alkanes, isoalkanes, <2% aromatics; Hydrocarbons, C12-C15, n-alkanes, isoalkanes <2% aromatics; and Hydrocarbons, C14-C16, n-alkanes, isoalkanes, <2% aromatics contain constituents which are also constituents of the target substance, Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics. The substances have overlapping constituents and therefore have qualitatively similar properties (RAAF Scenario 2 applies).

Hydrocarbons, C11-C16, n-alkanes, isoalkanes, <2% aromatics has a measured density value of 0.7663 g/cm³ at 15°C and 0.7627 g/cm³ at 20°C using an oscillating densitometer. Full study details are not available therefore reliability could not be assigned to these data.

Reliable data are, however, 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 were conducted in compliance with GLP, Hydrocarbons, C10-C13, n-alkanes, isoalkanes, <2% aromatics (GS190), Hydrocarbons, C12-C15, n-alkanes, isoalkanes, <2% aromatics (GS215) and Hydrocarbons, C14-C16, n-alkanes, isoalkanes, <2% aromatics (GS250) had measured relative density values of 0.75 at 20.2 ± 0.5°C (density = 750 kg/m³ at 20.2 ± 0.5°C), 0.763 at 20 ± 0.5°C (density = 763 kg/m³ at 20 ± 0.5°C) and 0.773 at 20 ± 0.5°C (density = 773 kg/m³ at 20 ± 0.5°C) respectively. The results are considered to be reliable and are used as weight of evidence.