Sodium 1,4-diisotridecyl sulphonatosuccinate

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

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

Adequacy of study:

key study

Justification for type of information:

Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.

Reason / purpose for cross-reference:

read-across source

Boiling pt.:

>= 270 °C

Atm. press.:

997 mBar

Decomposition:

yes

Decomp. temp.:

>= 270 °C

Remarks on result:

other: From 270 °C the test item shows a boiling and/or thermal decomposition with evaporation of the decomposition components.

The test item Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate shows a boiling and/or thermal decomposition at ca. 270 °C (at 997 mbar) (a decomposition is most likely due to a strong residue in the crucible at ca. 600 °C) according to the definition in the OECD guideline 103 (mean value from repeat determination; 1st heating run).

·        272 °C (from first measurement)

·        269 °C (from second measurement)

From 270 °C the test item shows a boiling and/or thermal decomposition with evaporation of the decomposition components.

The DSC measurements were confirmed by means of TGA measurements (up to 270 °C the sample shows a weight loss of ca. 3-4 weight%) under the same measuring conditions.

Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.

Conclusions:

boiling/decomposition at 270°C

Executive summary:

In the Klimisch 1 non-GLP study from Kintrup (2013) the boiling point of Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate was determined with the DSC method according to OECD 103 and EU method A.2. The test item shows a boiling and/or thermal decomposition at ca. 270 °C (at 997 mbar) (a decomposition is most likely due to a strong residue in the crucible at ca. 600 °C) according to the definition in the OECD guideline 103 (mean value from repeat determination; 1st heating run).

This information is considered to be relevant and reliable for the further risk assessment.

Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.

Description of key information

boiling and/or thermal decomposition at ca. 270 °C

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

270 °C

Additional information

In the Klimisch 1 non-GLP study from Kintrup (2013) the boiling point of Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate was determined with the DSC method according to OECD 103 and EU method A.2. The test item shows a boiling and/or thermal decomposition at ca. 270 °C (at 997 mbar) (a decomposition is most likely due to a strong residue in the crucible at ca. 600 °C) according to the definition in the OECD guideline 103 (mean value from repeat determination; 1st heating run).

For the risk assessment a boiling point of 270°C will be used.

This information is considered to be relevant and reliable for the further risk assessment.