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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Guideline compliant well documented study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
>= 248 °C
Atm. press.:
997 mBar
Decomposition:
yes
Decomp. temp.:
>= 248 °C
Remarks on result:
other: From 248°C the test item shows a boiling and/or thermal decomposition with evaporation of the decomposition products.

The test item Sodium di(1.3-dimethylbutyl) sulfosuccinate shows a boiling and/or thermal decomposition at ca. 248 °C

 (at 997 mbar) (a decomposition is most likely due to a strong residue in the crucible at ca. 600 °C (see TGA measurements)) according to the definition in the OECD guideline 103 (mean value from repeat determination; 1st heating run).

·        248 °C (from first measurement)

·        249 °C (from second measurement)

·        249 °C (from third measurement)

From 248 °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 248 °C the sample shows a weight loss of ca. 4-5 weight%) under the same measuring conditions

Conclusions:
boiling/decomposition at 248°C
Executive summary:

In the Klimisch 1 non-GLP study from Kintrup (2012) the boiling point of Sodium di(1.3-dimethylbutyl) sulfosuccinate was determined with the DSC method according to OECD 103 to be at or above 248°C. At and above that temperature boiling or decomposition started. There is some indication from TGA that the test item decomposed.

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

Description of key information

boiling/decomposition temperature: 248°C

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
248 °C

Additional information

In the Klimisch 1 non-GLP study from Kintrup (2012) the boiling point of Sodium di(1.3-dimethylbutyl) sulfosuccinate was determined with the DSC method according to OECD 103 to be at or above 248°C. At and above that temperature boiling or decomposition started. There is some indication from TGA that the test item decomposed.

For the risk assessment a boiling point of 248°C will be used.

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