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Reference
Endpoint:
other: self-reactive properties
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 1 – 16, 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study, according to ASTM, under Internal management system, certificate of analysis included in the report.
Qualifier:
according to guideline
Guideline:
other: ASTM E537-07, Standard test method for the thermal stability of chemicals by Differential Scanning Calorimetry, 2007
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Results:
Para-Toluene Sulfo Chloride shall not be considered for classification as self-reactive substance according to EC Regulation No 1271/2008 (CLP).

Accuracy check

Measured values for Indium:

- onset temperature      : 157.01°C

- enthalpy of melting     : 28.29 J/g

The measured values are within the acceptance limits.

 

Test substance

The DSC curve is shown in the attachment. It shows an endothermic peak followed by an exothermic peak. The endothermic peak between 60°C and 80°C is from melting of the test substance. The total enthalpy of melting is 162 J/g.

The exothermic part consists of a main peak with a pre shoulder between 190°C and 255°C and a broad after peak between 255°C and 366°C. By definition calculation of the onset temperature is based on the greatest slope of the peak, which in this case is the main peak. Consequently the extrapolated onset temperature is 235°C. The total decomposition energy, which is based on the whole peak (i.e. main peak with shoulder and after peak) is 457 J/g.

With an extrapolated onset temperature of 235°C it can be concluded that the estimated SADT for a 50 kg package is greater than 75°C. This means that the substance shall not be considered for classification as self-reactive substance according to EC Regulation No 1271/2008 (CLP).

 

 

Conclusions:
Para-Toluene Sulfo Chloride shall not be considered for classification as self-reactive substance according to EC Regulation No 1271/2008 (CLP).

Description of key information

Para-Toluene Sulfo Chloride  shall not be considered for classification as self-reactive substance according to EC Regulation No 1271/2008 (CLP).

Additional information