Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
December 18, 2013 - July 17, 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study was performed in accordance with OECD guideline 102.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report Date:
2014

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
(1995)
Deviations:
no
Principles of method if other than guideline:
Confirmation by thermogravimetry (TGA) and differential scanning calorimetry (DSC).
GLP compliance:
no
Type of method:
capillary method
Remarks:
(metal block)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Name of test material (as cited in study report): Disodium Isodecyl Sulfosuccinate
Description: white powder
Storage conditions of test material: at room temperature in well-sealed container
The substance was tested as received.

Results and discussion

Melting / freezing point
Key result
Decomposition:
yes
Decomp. temp.:
>= 300 °C
Remarks on result:
other: No melting or boiling before decomposition.

Any other information on results incl. tables

Capillary/metal block method

The test substance turned from a white into a brown solid. The gradual color change was noted between 275 and 320°C. No liquid phase was observed.

 

TGA

Over 50% weight loss was measured between 275°C and 325°C. There was 70% loss of weight at 650°C. A charred residue left in the sample pan after the experiment.

 

DSC

The DSC curves showed peaks at 315°C with onsets at 308°C.

Applicant's summary and conclusion

Conclusions:
In a OECD 102 guideline study using the capillary/metal block method, decomposition of the substance started at ca. 275°C with the major decomposition at ca. 300°C. No melting before decomposition. TGA and DSC measurements confirmed the decomposition of the substance.