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Boiling point

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Endpoint:
boiling point
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.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Boiling pt.:
153 - 179 °C
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
426 - 452 K
Atm. press.:
101.8 kPa
Decomposition:
no

Results

The thermographic data for determinations 1 and 2 are shown in the tables below and the thermograms are shown in Attachment 1 of this summary.

Table 1: Thermographic Data – Determination 1

Thermal event

Interpretation

Onset temperature

Endset temperature

°C

K

°C

K

Endotherm

Boiling temperature

152.58

426

178.82

452

 

 Atmospheric pressure: 101.8kPa

 

Table 2: Thermographic Data – Determination 2

Thermal event

Interpretation

Onset temperature

Endset temperature

°C

K

°C

K

Endotherm

Boiling temperature

152.83

426

178.47

453

 

Atmospheric pressure: 101.8 kPa

 

Overall boiling temperature: 153 - 179°C (426 – 452 K)at 101.8 kPa

 

Conclusions:
The boiling temperature range of the test item has been determined to be 153 - 179°C (426 - 452 K) at 101.8 kPa using a relevant test method and in compliance with GLP.
Executive summary:

The determination was carried out by differential scanning calorimetry (DSC) using a procedure designed to be compatible with Method A2 Boiling Temperature of Commission Regulation(EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Conclusion

The boiling temperature range of the test item has been determined to be 153 - 179°C (426 - 452 K) at 101.8 kPa.

Endpoint:
boiling point
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.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Boiling pt.:
177 - 198 °C
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
450 - 471 K
Atm. press.:
101.8 kPa
Decomposition:
no

Results

The thermographic data for determinations 1 and 2 are shown in the tables below and the thermograms are shown in Attachment 1 of this summary.


Table 1: Thermographic Data – Determination 1

Thermal event

Interpretation

Onset temperature

Endset temperature

°C

K

°C

K

Endotherm

Boiling temperature

176.76

450

196.78

470

 

 Atmospheric pressure: 101.8kPa

 

Table 2: Thermographic Data – Determination 2

Thermal event

Interpretation

Onset temperature

Endset temperature

°C

K

°C

K

Endotherm

Boiling temperature

177.05

450

199.13

472

 

Atmospheric pressure: 101.8 kPa

 

Overall boiling temperature: 177 - 198°C (450 – 471 K)at 101.8 kPa

 

Conclusions:
The boiling temperature range of the test item has been determined to be 177 - 198°C (450 - 471 K) at 101.8 kPa using a relevant test method. The result is considered reliable.
Executive summary:

The determination was carried out by differential scanning calorimetry (DSC) using a procedure designed to be compatible with Method A2 Boiling Temperature of Commission Regulation(EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Conclusion

The boiling temperature range of the test item has been determined to be 177 - 198°C (450 - 471 K) at 101.8 kPa.

Endpoint:
boiling point
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
Boiling pt.:
153 - 179 °C
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
426 - 452 K
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
177 - 198 °C
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
450 - 471 K
Atm. press.:
101.8 kPa
Decomposition:
no
Boiling pt.:
162 - 181 °C
Atm. press.:
1 atm
Decomposition:
no
Boiling pt.:
155 - 192 °C
Atm. press.:
1 atm
Decomposition:
no

Description of key information

Boiling temperature range of the substance is 153 - 198°C (426 - 471 K) at 101.8

Key value for chemical safety assessment

Additional information

There are no reliable measured boiling point 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 an OECD 103 study using Differential Scanning Calorimetry (DSC) and 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 (GS170) have measured boiling ranges of 153 - 179°C (426 - 452 K) and 177 - 198°C (450 - 471 K) at 101.8 kPa 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 boiling range of 155 -192°C at 1013 hPa using the distillation method.

In a secondary source to which reliability could not be assigned, a boiling point range of 153.9 - 190.5°C (427 - 464 K) was reported for the submission substance.