Di(benzothiazol-2-yl) disulphide

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Decomposition:

yes

Decomp. temp.:

240 °C

Remarks on result:

other: Exotherm causes an irreversible change of the molecular properties (probably decomposition), a boling point cannot be determined.

An endothermic effect, started at 150 °C was observed. A small exothermic reaction started at 240 °C (enthalpy about 40 J/g) was followed by an endothermic effect at 240 °C. Since the exotherm causes an irreversible change of the molecular properties (probably decomposition), a boiling point (boiling range) in the classical sense cannot be determined. Following the exothermic reaction, boiling effects are observed above 310 °C.

The boiling point of 2,2'-Dithiobis(benzothiazole) is according to EC-A 2 non-determinable.

Conclusions:

The boiling point of 2,2'-Dithiobis(benzothiazole) is non-determinable.

Executive summary:

An endothermic effect, started at 150 °C was observed. A small exothermic reaction started at 240 °C (enthalpy about 40 J/g) was followed by an endothermic effect at 240 °C. Since the exotherm causes an irreversible change of the molecular properties (probably decomposition), a boiling point (boiling range) in the classical sense cannot be determined. Following the exothermic reaction, boiling effects are observed above 310 °C. The boiling point of 2,2'-Dithiobis(benzothiazole) is according to EC-A 2 non-determinable (Currenta, 2010).

Description of key information

An endothermic effect, started at 150 °C was observed. A small exothermic reaction started at 240 °C (enthalpy about 40 J/g) was followed by an endothermic effect at 240 °C. Since the exotherm causes an irreversible change of the molecular properties (probably decomposition), a boiling point (boiling range) in the classical sense cannot be determined. Following the exothermic reaction, boiling effects are observed above 310 °C. The boiling point of 2,2'-Dithiobis(benzothiazole) is according to EC-A 2 non-determinable (Currenta, 2010).