Registration Dossier

Administrative data

Endpoint:
boiling point
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because chemical change occurred during the melting point study
Cross-reference
Reason / purpose for cross-reference:
data waiving: supporting information
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From October 27, 2017 to February 27, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not specified
GLP compliance:
yes
Type of method:
capillary method
Key result
Decomposition:
yes
Decomp. temp.:
ca. 89.7 °C
Remarks on result:
not determinable

Results:

Suspected decomposition was observed from 89.7°C with the release of colourless gas and the test sample moving up the tube. At 160°C the sample was observed to pop out of the tube with more sample ejected at 184°C. As a result further testing was stopped.

Conclusions:
Under the study conditions, melting point of the test substance could not be determined due to decomposition at 89.7°C.
Executive summary:

A study was conducted to determine the melting point of the test substance, using the capillary method (with photocell detection), according to OECD Guideline 102 and EU Method A.1, in compliance with GLP. During the study, suspected decomposition was observed from 89.7°C with the release of colourless gas and the test sample moving up the tube. At 160°C the sample was observed to pop out of the tube with more sample ejected at 184°C. As a result further testing was stopped. Under the study conditions, melting point of the test substance could not be determined due to decomposition at 89.7°C (Chilworth, 2018).

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion