Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Guideline:
other: Differential Scanning Calorimetry
Deviations:
not applicable
Principles of method if other than guideline:
determination of decomposition: DSC, 25-450 °C, 3 K/min, sealed glass vial in air
determination of sublimation: TGA, 25-1100 °C, 25 K/min, air and nitrogen

GLP compliance:
not specified
Type of method:
thermal analysis

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Melting / freezing point
Melting / freezing pt.:
290 °C
Atm. press.:
ca. 1 atm
Decomposition:
yes
Remarks:
(sealed glass vial in air)
Decomp. temp.:
>= 374 °C
Sublimation:
yes
Remarks:
(thermogravimetric analysis, TGA)
Subl. temp.:
25 - 200 °C
Remarks on result:
other: weight loss in TGA, air -0.4% (w/w) between 25 and 200 °C

Applicant's summary and conclusion

Conclusions:
Melting point: 290°C (Method DSC, sealed glass vial in air)
Decomposition started at 374°C (Method DSC, sealed glass vial in air).
Executive summary:

Melting point and thermal decomposition of Chloranil (2,3,5,6-tetrachloro-1,4-benzoquinone) were determined by Differential Scanning Calorimetry (DSC). The melting point was found to be 290°C. Exothermic decomposition started at 374°C in sealed glass vials in air.